An object of the present disclosure is to provide a golf ball having an excellent flight distance and stability on a second or subsequent shot while maintaining or improving a flight distance on a driver shot for a golfer with a slow head speed. The present disclosure provides a golf ball comprising a spherical core, and an outermost cover positioned outside the spherical core and having a plurality of dimples formed thereon, wherein a hardness difference S (=Hs−Ho) between a surface hardness Hs of the spherical core and a center hardness Ho (Shore C hardness) of the spherical core, a material hardness C (Shore D hardness) of the outermost cover, and a total volume V (mm3) of the plurality of dimples below a surface of a phantom sphere satisfy V−S×C≥0.
An object of the present disclosure is to provide a golf ball bending in a great amplitude and rolling a short distance after landing. The present disclosure provides a golf ball comprising a spherical core, an intermediate layer, and an outermost cover having a plurality of dimples formed thereon, wherein when a center hardness (Shore C hardness) of the spherical core is Ho, a surface hardness (Shore C hardness) of the spherical core is Hs, a hardness difference S=Hs−Ho, a material hardness (Shore D hardness) of the intermediate layer is Hm, a thickness of the intermediate layer is Tm (mm), a material hardness (Shore D hardness) of the outermost cover is Hc, a thickness of the outermost cover is Tc (mm), and a total lower volume of the plurality of dimples is Vi (mm3), [S×(Hm×Tm+Hc×Tc)]/(Tm+Tc)×Vi/1000<230 is satisfied.
An object of the present disclosure is to provide a golf ball having excellent stability on an approach shot around the green while maintaining or improving a flight distance on a driver shot for a golfer with a slow head speed. The present disclosure provides a golf ball comprising a spherical core, and an outermost cover positioned outside the spherical core and having a plurality of dimples formed thereon, wherein when a hardness difference S (=Hs−Ho) between a surface hardness Hs of the spherical core and a center hardness Ho (Shore C hardness) of the spherical core, a material hardness C (Shore D hardness) of the outermost cover, and a total volume V (mm3) of the plurality of dimples below a surface of a virtual sphere satisfy V+S×C≤1200.
Provided are a highly accurate method for predicting a physical property of a polymer and a polymer having excellent physical properties such as an ability to selectively capture specific cells and biocompatibility. The method for predicting a physical property of a polymer includes Step 1 of obtaining a structure of a monomer from a structure of a polymer, Step 2 of converting the obtained structure of the monomer or a converted structure of the monomer into a format recognizable by a computer, Step 3 of computing a descriptor from the format recognizable by a computer, Step 4 of obtaining a physical property of the polymer and performing a regression calculation using the physical property of the polymer as an objective variable and the descriptor as an explanatory variable to construct a regression model, Step 5 of computing a format of a new monomer from the format recognizable by a computer, Step 6 of computing a descriptor from the format of the new monomer or a converted format of the new monomer, and Step 7 of applying the descriptor of the new monomer to the regression model to predict a physical property of a polymer produced by polymerizing the new monomer.
This tire state estimation method includes the following. (1) Disposing, on the inner side of a tire, at least one power generator that generates voltage in response to deformation of the tire. (2) Acquiring measurement data in a time series obtained by measuring, while the tire is rotating, the voltage and/or a physical quantity corresponding to the voltage. (3) Identifying a peak that repeatedly appears in the measurement data. (4) Identifying a value of the peak and/or an interval of the peak. (5) Estimating the state of the tire on the basis of the identified value and/or the identified interval. The power generator is provided with a first member and a second member. The first member and the second member are configured such that one is positively charged and the other is negatively charged in accordance with pressure applied to the first member and the second member.
KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION (Japan)
Inventor
Minagawa, Yasuhisa
Tanaka, Masaru
Anada, Takahisa
Yamamoto, Aki
Shindo, Hironori
Park, Jisu
Ujigawa, Kazuma
Abstract
Provided is a method of producing a polymer-coated substrate for capturing cancer cells in which a polymer layer is stably maintained on the surface of the substrate for a long time even in a liquid environment. The method of producing a polymer-coated substrate for capturing cancer cells includes forming a polymer layer using a hydrophilic polymer represented by the following formula (I) on a surface of a substrate having undergone anti-reflection treatment,
Provided is a method of producing a polymer-coated substrate for capturing cancer cells in which a polymer layer is stably maintained on the surface of the substrate for a long time even in a liquid environment. The method of producing a polymer-coated substrate for capturing cancer cells includes forming a polymer layer using a hydrophilic polymer represented by the following formula (I) on a surface of a substrate having undergone anti-reflection treatment,
Provided is a method of producing a polymer-coated substrate for capturing cancer cells in which a polymer layer is stably maintained on the surface of the substrate for a long time even in a liquid environment. The method of producing a polymer-coated substrate for capturing cancer cells includes forming a polymer layer using a hydrophilic polymer represented by the following formula (I) on a surface of a substrate having undergone anti-reflection treatment,
wherein R1 represents a hydrogen atom or a methyl group; R2 represents an alkyl group; m represents 1 to 5; and n represents the number of repetitions.
An object of the present disclosure is to provide a golf ball having a small difference in the flight distance on a driver shot when hit at a high head speed and when hit at a low head speed. The present disclosure provides a golf ball comprising a spherical core, an intermediate layer and an outermost cover, wherein when a center hardness Ho (Shore C hardness) of the spherical core, a surface hardness Hs (Shore C hardness) of the spherical core, a hardness difference S=Hs−Ho, a material hardness Hm (Shore D hardness) of the intermediate layer, a material hardness Hc (Shore D hardness) of the outermost cover, a thickness Tc (mm) of the outermost cover, and a total lower volume Vi (mm3) of a plurality of dimples satisfy Vi>365 and (Hc/Tc)×(S×Hm/Vi)≤130.
An object of the present disclosure is to provide a golf ball that has a high spin rate but does not fly up in a high maximum flying height, thereby having a reduced number of shots into the OB area on a driver shot. The present disclosure provides a golf ball comprising a spherical core, an intermediate layer and an outermost cover, wherein a material hardness Hm (Shore D hardness) of the intermediate layer, a material hardness Hc (Shore D hardness) of the outermost cover, a thickness Tc (mm) of the outermost cover, and a total lower volume Vi (mm3) of a plurality of dimples satisfy Vi>365 and (Hc/Tc)×(Hm/Vi)≤7.5.
An object of the present disclosure is to provide a golf ball having a lowered flight distance difference between flight distances on various numbered-iron shots. The present disclosure provides a golf ball comprising a spherical core, an intermediate layer covering the spherical core, and an outermost cover positioned outside the intermediate layer and having a plurality of dimples formed thereon, wherein the plurality of dimples have a total lower volume Vi of more than 365 mm3, and a slab hardness Hc (Shore D) of a cover composition constituting the outermost cover, a thickness Tc (mm) of the outermost cover and the total lower volume Vi (mm3) of the plurality of dimples satisfy a relationship of 8.5≤Tc/Hc×Vi.
Systems and methods receive first data associated with first launch conditions of a first golf ball after the first golf ball moves from a first initial position. The systems and methods determine a simulated landing position of the first golf ball, the simulated landing position determined based at least in part on the launch conditions. The systems and methods receive an actual landing position of the first golf ball, determine second data associated with an error between the simulated landing position and the actual landing position, and train a machine learning model using the error between the simulated landing position and the actual landing position. The systems and methods receive third data associated with second launch conditions of a second golf ball after the second golf ball moves from a second initial position, and determine, based at least in part on inputting the third data into the trained machine learning model, a predicted landing position of the second golf ball.
The pneumatic tire comprises a tread portion, a pair of sidewall portions and a pair of bead portions. At least one of the bead portions is provided with at least one electronic component, a bead apex rubber extending radially outwardly from a bead core, and a bead reinforcing layer extending in the tire radial direction along the bead apex rubber. The bead reinforcement layer comprises a steel cord ply having a spliced portion where both circumferential end portions thereof are overlap-jointed. The electronic component is arranged away from the spliced portion in the tire circumferential direction, and located within the arranged range in the tire radial direction of the steel cord ply.
The present disclosure aims to provide a method for producing a trans-polyisoprenoid (trans-1,4-polyisoprene) with a molecular weight of more than 105 in an enzymatic manner. The present disclosure relate to a method for producing a trans-polyisoprenoid, which includes binding to a lipid membrane in vitro a trans-prenyltransferase (tPT) family protein capable of producing a product with a molecular weight of 104 or more when not bound to any lipid membrane.
An object of the present disclosure is to provide a novel golf ball having excellent spin performance on approach shots. The present disclosure provides a golf ball comprising a golf ball body and a paint film composed of at least one layer and formed on a surface of the golf ball body, wherein at least one layer of the paint film contains a polyurethane as a resin component, the polyurethane is obtained by a reaction between a polyol composition containing a polyol and a polyisocyanate composition containing a polyisocyanate, and the polyol composition contains, as a polyol component, a urethane polyol having a structural unit derived from a polyether polycarbonate diol.
A prediction method includes: measuring an actual shape of a rolling reference tire; acquiring a displacement profile as a change in the actual shape due to rolling; calculating displacement amounts of order components of first to Nth orders (N is an integer of 2 or more) in the displacement profile through fast Fourier transform; obtaining, as a quantitative index value, a reciprocal of a sum of displacement amounts of order components reflecting a change in the actual shape due to a sign of the standing wave phenomenon, and acquiring a correlation between a performance index value representing durability of the reference tire and the quantitative index value; and simulating rolling of the reference tire to estimate a virtual quantitative index value corresponding to the quantitative index value, and acquiring a correlation between the virtual quantitative index value and the quantitative index value.
An object of the present disclosure is to provide a golf ball from which stain such as mud or grass juice can be wiped off when the stain is adhered to the golf ball while the spin performance of the golf ball on approach shots is not substantially lowered. The present disclosure provides a golf ball comprising a golf ball body and a paint film composed of at least one layer and formed on a surface of the golf ball body, wherein at least one layer of the paint film contains a polyurethane as a resin component, and the polyurethane has a structural unit derived from a polyether polycarbonate diol.
An information processing system and an information processing method that can allow the circumferential length of the tire inner cavity surface of a pneumatic tire to be easily identified. The information processing system can include: a first acquisition processing unit configured to acquire shape identification information used to identify a shape of a pneumatic tire; a second acquisition processing unit configured to acquire circumferential length information corresponding to a circumferential length of a tire inner cavity surface of the pneumatic tire on the basis of the shape identification information acquired by the first acquisition processing unit; and an output processing unit configured to output the circumferential length information acquired by the second acquisition processing unit.
G01B 21/02 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
G06K 7/14 - Methods or arrangements for sensing record carriers by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
G06K 19/077 - Constructional details, e.g. mounting of circuits in the carrier
Provided is a pneumatic tire that has substantially improved crack resistance performance and durability performance; and the pneumatic tire has a tread portion with grooves formed on the surface, the tread portion is formed of a first rubber composition constituting a groove bottom portion, and a second rubber composition adjacent to the first rubber composition on the inner side of the groove bottom portion in the tire radial direction; and the acetone extractable content of the first rubber composition: E1 (% by mass) and the acetone extractable content of the second rubber composition: E2 (% by mass) satisfy (E1−E2)<20, and, when the tire is assembled to a standardized rim and the internal pressure is 250 kPa, the cross-sectional width of the tire Wt (mm), the outer diameter Dt (mm), and the volume of the space occupied by the tire: virtual volume V (mm3) satisfy following (formula 1) and (formula 2).
Provided is a pneumatic tire that has substantially improved crack resistance performance and durability performance; and the pneumatic tire has a tread portion with grooves formed on the surface, the tread portion is formed of a first rubber composition constituting a groove bottom portion, and a second rubber composition adjacent to the first rubber composition on the inner side of the groove bottom portion in the tire radial direction; and the acetone extractable content of the first rubber composition: E1 (% by mass) and the acetone extractable content of the second rubber composition: E2 (% by mass) satisfy (E1−E2)<20, and, when the tire is assembled to a standardized rim and the internal pressure is 250 kPa, the cross-sectional width of the tire Wt (mm), the outer diameter Dt (mm), and the volume of the space occupied by the tire: virtual volume V (mm3) satisfy following (formula 1) and (formula 2).
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To provide an analysis method that can analyze a crystal structure, a crystal morphology, a crystal distribution of a rubber material in stretching even in a local portion of the rubber material. The present disclosure relates to a method of analyzing a crystal structure, a crystal morphology, or a crystal distribution of a rubber material in stretching using a nanodiffraction imaging technique that analyzes an electron diffraction pattern acquired by scanning electron beams converged to a diameter of 100 nm or less on a surface of the rubber material while a behavior of stretching deformation of the rubber material and/or a state of the rubber material in stretching are observed using a transmission electron microscope.
G01N 23/20058 - Measuring diffraction of electrons, e.g. low energy electron diffraction [LEED] method or reflection high energy electron diffraction [RHEED] method
A golf club head includes a striking face having a face center and defining a face plane, a virtual vertical center plane perpendicular to the face plane and passing through the face center, a sole portion, a top portion, a heel portion, a toe portion, a hosel configured to receive a shaft, and a loft, L, no less than 39°. A center of gravity is spaced from the vertical center plane by a distance, D7. A moment of inertia, Iyy, is measured about an axis extending in a heel to toe direction, parallel with a ground plane, and passes through the center of gravity, such that Iyy/D7≥527.4 g·cm/°×L−23,580 g·cm.
A medical rubber composition can include: a base polymer containing halogenated isobutylene-isoprene-rubber; and an acid acceptor, and a content of the acid acceptor can be 1 part by mass to 3 parts by mass with respect to 100 parts by mass of the base polymer, and a BET specific surface area of the acid acceptor can be 150 m2/g to 200 m2/g.
A putter-type golf club head that, when oriented in a reference position, includes a blade portion having a striking face, a top line, and a sole, the striking face in turn including a face center. The club head further includes a rear portion in communication with, and rearward of, the blade portion, and it includes an alignment element rearward of, and recessed toward the sole from, the top line. The alignment element defines a virtual center line segment oriented in a substantially front-to-rear direction at a height between 19 mm and 24 mm from a lowermost point of the sole, the center line segment having a length no less than 34 mm and being not spaced more than 10 mm from a virtual vertical plane passing through the face center and extending generally perpendicular to the striking face. A width of the club head is no less than 3.0 in.
A tire has a tread portion including a block row including a plurality of blocks separated by a plurality of axial grooves. Each of the blocks is provided with one circumferential sipe extending in the tire circumferential direction so as to communicate with at least one of the axial grooves. The circumferential sipe includes at least one bent portion bent locally. At least one of edges of the circumferential sipe is provided with a chamfered portion.
A method for producing a retreaded tire 2 includes a step of shaving a tread 104 from a tire 102, a step of attaching a tag member 30 to a formed surface BD made by shaving the tread 104, and a step of reconstructing a new tread 4. The formed surface BD is located radially outward of a maximum width position of the tire 2. The tag member 30 is located radially inward of an end of a belt 14. An initial vulcanization time t10 of a rubber composition for a protector 34 of the tag member 30 is shorter than an initial vulcanization time t10 of a rubber composition for the new tread 4.
Provided is a polymer-coated glass substrate having a surface with controlled irregularity and a low elastic modulus. The polymer-coated glass substrate includes a glass substrate and two or more hydrophilic polymer layers on a surface of the glass substrate.
The tire includes a tread portion whose position when mounted on a vehicle is specified. The tread portion includes a first tread edge, a second tread edge, a plurality of circumferential grooves, and five land regions. The circumferential grooves include a first shoulder circumferential groove, a first crown circumferential groove, a second shoulder circumferential groove, and a second crown circumferential groove. The second shoulder circumferential groove has groove walls each configured as a zigzag surface. The second crown circumferential groove has groove walls each configured as a flat surface. Each of the groove walls of the second shoulder circumferential groove includes first surfaces and second surfaces arranged alternately. Each of the groove walls of the second shoulder circumferential groove includes has 2 to 4 first surfaces between each two of axial grooves adjacent to each other in a tire circumferential direction.
A golf club comprises: a pipe-shaped shaft having a space therein and having a first end and a second end; a weight member attached to the shaft on a first end side; and a golf club head attached to the shaft on a second end side. The weight member comprises: a main body portion at least partially disposed in the space of the pipe-shaped shaft; and a flange portion disposed outside the pipe-shaped shaft. The flange portion comprises: a first portion extending in the radial direction of the shaft and having an outer diameter larger than an outer diameter of the shaft at the first end; and a second portion extending in the axial direction of the shaft from the first portion toward the second end so as to cover an outer circumferential surface of the shaft.
A golf club shaft includes a plurality of fiber reinforced resin layers, a tip end, and a butt end. The golf club shaft also includes a plurality of extending portions each having an axial directional length of greater than 25 mm, and a plurality of transition portions each having an axial directional length of less than or equal to 25 mm and each having an outer diameter changing by 0.3 mm or more. Each of the transition portions connects two of the extending portions. The extending portions include at least one intermediate portion connecting two of the transition portions. The number of the transition portions is greater than or equal to 2, and may be greater than or equal to 3. The extending portions may include a tip extending portion and a butt extending portion.
B32B 3/18 - Layered products essentially comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products essentially having particular features of form characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material characterised by an internal layer formed of separate pieces of material
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
B32B 5/26 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer another layer also being fibrous or filamentary
An air pressure monitoring apparatus includes an air pressure acquisition unit, a pressure-adjustment determination unit, and a determination unit. The air pressure acquisition unit acquires data on the air pressure in a tire attached to a vehicle. The pressure-adjustment determination unit determines whether the air pressure in the tire has been adjusted. The determination unit determines whether the tire has a slow puncture based on time-course changes in the data on the air pressure. When the pressure-adjustment determination unit has determined that the air pressure in the tire has been adjusted, the determination unit corrects lastly acquired data on the air pressure and determines whether the tire has a slow puncture based on the corrected data on the air pressure.
A tire comprises a tread portion comprising circumferential grooves and land portions divided thereby. The land portions include a first shoulder land portion and a first middle land portion adjacent thereto. The first shoulder land portion is provided with first shoulder sipes. The middle land portion is provided with first middle sipes. Each of the first shoulder sipes and the first middle sipes comprises a main portion extending in the tire radial direction, and a widened portion having a width greater than the main portion and opened at the tread surface of the land portion. The opening width of the first shoulder sipe at the tread surface is larger than the opening width of the first middle sipe at the tread surface.
A pneumatic tire includes a reinforcing filler arranged along a bead core. The reinforcing filler includes an inner portion extending in the tire radial direction, outer portion extending in the tire radial direction, and a middle portion extending in the tire axial direction on the radially inner side of the bead core so as to connect the inner portion and the outer portion. The outer portion has an outer end in the tire radial direction located radially inside an outer end in the tire radial direction of the inner portion and located radially outside a center position of a section height of the bead core in the tire radial direction.
A tire state determination system can acquire, from a vehicle, state data including various types of information that may exert influence on deterioration of a base body portion of a tire, can calculate, based on the acquired state data, an evaluation value S indicating a state of the base body portion of the tire, and can determine reusability of the tire based on the evaluation value S.
A golf club head includes a loft no less than 40 degrees; a striking face; a virtual center plane that is vertical and perpendicular to a virtual striking face plane and includes a face center; a rear face; and a recess. The recess extends in a heel-to-toe direction along an upper sole surface and has a depth that varies in the heel-to-toe direction such that a first depth corresponds with a first location heel-ward of the face center and a second depth corresponds with a second location toe-ward of the face center, the first depth being no less than 10 mm and greater than the second depth by at least 5 mm. An insert is received in the recess. And a center of gravity of the golf club head is spaced no greater than 5.0 mm from the virtual center plane measured in the heel-to-toe direction.
Provided is a tire having high peeling resistance such that an electronic component mounting member unlikely peels off from the surface of the tire even when a large impact is applied on the tire during a high-speed running in a low-temperature environment. In the tire, the electronic component mounting member for incorporating an electronic component is mounted on the surface of a tire inner member, the electronic component mounting member comprises an electronic component storage portion for storing the electronic component and a joint portion having a joint surface for mounting the electronic component mounting member on the surface of the tire inner member, and the complex elastic modulus E*r (MPa) of the joint portion at 0° C. and the complex elastic modulus E*i (MPa) of the tire inner member at 0° C. satisfy the following (formula 1).
Provided is a tire having high peeling resistance such that an electronic component mounting member unlikely peels off from the surface of the tire even when a large impact is applied on the tire during a high-speed running in a low-temperature environment. In the tire, the electronic component mounting member for incorporating an electronic component is mounted on the surface of a tire inner member, the electronic component mounting member comprises an electronic component storage portion for storing the electronic component and a joint portion having a joint surface for mounting the electronic component mounting member on the surface of the tire inner member, and the complex elastic modulus E*r (MPa) of the joint portion at 0° C. and the complex elastic modulus E*i (MPa) of the tire inner member at 0° C. satisfy the following (formula 1).
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A tire assembly can include a rim and a pneumatic tire. A sound damper can be in a tire inner cavity, defined by an outer surface of the rim and an inner surface of the pneumatic tire, extending in a tire circumferential direction. The rim can have a rim diameter RD not greater than 18 inches. A ratio SH/SW of a cross-sectional height SH to a tire cross-sectional width SW of the pneumatic tire can be 30% to 45%. A ratio RW/SW of a rim width RW of the rim to the tire cross-sectional width SW can be 78% to 99%. The sound damper can include a sponge material adhered to at least one of the outer surface of the rim and the inner surface of the pneumatic tire. The sponge material can have a volume of not less than 0.4% of a total volume of the tire inner cavity.
An iron-type golf club head includes a heel, a toe, a top portion, a sole portion, a top portion, a rear portion, and a striking wall. The striking wall includes a striking face having a plurality of scorelines and a face center and a rear surface. A minimum striking wall thickness Tmin is no greater than 2.5 min. A thickened central region of the striking wall has a maximum thickness, Tmax, greater than Tmin but no greater than 2.75. A first thickness T1 of the striking wall corresponds with a first location spaced toe-ward from the face center by a first distance D1 of between 20 mm and 30 mm. A second thickness T2 of the striking wall corresponds with a second location spaced heel-ward from the face center by the first distance D1 such that T1 is greater than T2 by no less than 0.05 mm.
A tire can include a tread portion and a buttress portion. The tread portion can include a crown region between a tire equator and a middle position and a shoulder region between a first tread ground-contact end and the middle position. The buttress portion can have a land ratio which is a land portion ratio between the first tread ground-contact end and a first position. A land ratio of the shoulder region can be larger than a land ratio of the crown region and the land ratio of the buttress portion.
A road surface condition determination system (100) comprises: a first acquisition processing unit (71) that acquires weather information of a first region including a first road which is among a plurality of predetermined roads; a second acquisition processing unit (72) that acquires structure information of the first road; and a determination processing unit (75) that determines the road surface condition of the first road on the basis of the first region weather information acquired by the first acquisition processing unit (71) and the first road structure information acquired by the second acquisition processing unit (72).
A golf ball can include a core, amid layer, and a cover. In the golf ball, a hardness Ho at a central point of the core, a core surface hardness Hs, a hardness H1 at a point to which a distance from the central point of the core can be equal to 25% of a radius of the core, a hardness H2 at a point to which a distance from the central point of the core can be equal to 75% of the radius of the core, a hardness Hm of the mid layer, and a hardness Hc of the cover can satisfy all of the following relational expressions.
A golf ball can include a core, amid layer, and a cover. In the golf ball, a hardness Ho at a central point of the core, a core surface hardness Hs, a hardness H1 at a point to which a distance from the central point of the core can be equal to 25% of a radius of the core, a hardness H2 at a point to which a distance from the central point of the core can be equal to 75% of the radius of the core, a hardness Hm of the mid layer, and a hardness Hc of the cover can satisfy all of the following relational expressions.
Ho≤H1≤H2≤Hs (1)
A golf ball can include a core, amid layer, and a cover. In the golf ball, a hardness Ho at a central point of the core, a core surface hardness Hs, a hardness H1 at a point to which a distance from the central point of the core can be equal to 25% of a radius of the core, a hardness H2 at a point to which a distance from the central point of the core can be equal to 75% of the radius of the core, a hardness Hm of the mid layer, and a hardness Hc of the cover can satisfy all of the following relational expressions.
Ho≤H1≤H2≤Hs (1)
Ho≤Hs (2)
A golf ball can include a core, amid layer, and a cover. In the golf ball, a hardness Ho at a central point of the core, a core surface hardness Hs, a hardness H1 at a point to which a distance from the central point of the core can be equal to 25% of a radius of the core, a hardness H2 at a point to which a distance from the central point of the core can be equal to 75% of the radius of the core, a hardness Hm of the mid layer, and a hardness Hc of the cover can satisfy all of the following relational expressions.
Ho≤H1≤H2≤Hs (1)
Ho≤Hs (2)
(Hs−Ho)*(3/2)≤(Hm−Hc) (3)
A golf ball can include a core, amid layer, and a cover. In the golf ball, a hardness Ho at a central point of the core, a core surface hardness Hs, a hardness H1 at a point to which a distance from the central point of the core can be equal to 25% of a radius of the core, a hardness H2 at a point to which a distance from the central point of the core can be equal to 75% of the radius of the core, a hardness Hm of the mid layer, and a hardness Hc of the cover can satisfy all of the following relational expressions.
Ho≤H1≤H2≤Hs (1)
Ho≤Hs (2)
(Hs−Ho)*(3/2)≤(Hm−Hc) (3)
(Hs−Hc)*(3/2)≤(Hm−Hs) (4).
The tire includes a tread portion provided with a first tread edge, a shoulder circumferential groove, and a shoulder land region. The shoulder land region includes an inner area demarcated axially inside from a center position in the tire axial direction of the shoulder land region, an outer area demarcated axially outside from the center position, and a plurality of shoulder axial grooves extending in the tire axial direction at least in the outer area. In a standard tire load loaded state, an average ground contact pressure in the outer area is larger than an average ground contact pressure in the inner area.
A tire 2 includes a tread 4, a belt 16, and a band 18. The belt 16 includes belt cords 44. The band 18 includes band cords 60. The band 18 is composed of a band strip 58. The band strip 58 is a cord array in which the band cords 60 are arranged. A zone from a first end to a second end of the belt 16 is a control zone. Residual tension of the band cords 60 in the control zone is not less than 15.0 N. The control zone includes a crown zone and a pair of shoulder zones. Residual tension of the band cords 60 in the crown zone is higher than residual tension of the band cords 60 in each shoulder zone. A shape index of a reference ground-contact surface of the tire 2 is not less than 1.00 and not greater than 1.30.
B60C 9/22 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
The present invention provides a packaged body in which a rubber product for medical use is hermetically packed, the packaging body comprising an oxygen-impermeable packaging material and having a first space part containing the rubber product for medical use and a second space part containing an oxygen detecting agent having a color hue that changes in accordance with an oxygen concentration, the first space part and the second space part being separated from each other by means of an oxygen-permeable partition. The oxygen concentration in the packaged body containing the rubber product for medical use can be confirmed visually, and the oxygen in the packaged body can be maintained at a predetermined concentration or lower, facilitating quality assurance by means of sterilization treatment.
B65D 81/20 - Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
A61J 1/14 - Containers specially adapted for medical or pharmaceutical purposes - Details; Accessories therefor
A61J 1/18 - Arrangements for indicating condition of container contents, e.g. sterile condition
B65B 55/02 - Sterilising, e.g. of complete packages
B65B 55/08 - Sterilising wrappers or receptacles prior to, or during, packaging by irradiation
B65D 81/26 - Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
The pneumatic tire comprises a carcass and a pair of bead portions each with a bead core and a bead apex. The carcass comprises a carcass ply having a pair of turned-up portions and a main portion therebetween. At least one of the bead portions 4 is provided with a bead reinforcing rubber disposed on the axially outside of the turned-up portion. The bead reinforcing rubber comprises an axially outer first reinforcing rubber layer and an axially inner second reinforcing rubber layer. The complex elastic modulus of the second reinforcing rubber layer is smaller than the complex elastic modulus of the first reinforcing rubber layer.
Provided is a method of producing a sulfur-based active material, the method comprising the steps of: (1) mixing an acrylic resin, sulfur, and an iron compound comprising a divalent or trivalent iron ion to obtain a raw material; and (2) baking the raw material, characterized in that a volume energy density is improved while maintaining a capacity retention rate of the active material that constitutes an electrode of a lithium-ion secondary battery.
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
The present disclosure provides a method for discriminating carbon black which can discriminate whether or not a carbon black is a recovered carbon black. Provided is a method for discriminating whether or not a carbon black is a recovered carbon black, including examining the presence of an inorganic substance on or near a surface of the carbon black.
G01N 23/04 - Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or by transmitting the radiation through the material and forming images of the material
A developing roller includes an electro-conductive shaft core and an elastic layer provided on an outer peripheral surface of the electro-conductive shaft core. The elastic layer includes a base layer formed of a rubber composition and an outermost layer formed on a surface of the base layer. The outermost layer is formed of a resin and is an incomplete film including a plurality of through-holes. A ratio of portions other than the through-holes of the outermost layer is 25% to 45% with respect to a total surface area of the elastic layer.
A pneumatic tire is provided with a mark portion raised from a surface of at least one of side portions. A first region demarcated on the mark portion side of a boundary position between the mark portion and the surface of the at least one of the side portions is provided with a plurality of micro protrusions each having a raised height smaller than a raised height of the mark portion and a second region demarcated on the surface-of-the-at-least-one-of-the-side-portions side of the boundary position is not provided with the micro protrusions.
An object of the present disclosure is to provide a novel golf ball aiming at realization of a sustainable and better society and having a low spin rate on driver shots. The present disclosure provides a golf ball comprising a spherical constituent member, wherein the spherical constituent member is formed from a rubber composition containing (a) a rubber component containing a natural rubber, (b) a co-crosslinking agent, (c) a crosslinking initiator, and (d) an organic sulfur compound, a surface hardness (Hs) of the spherical constituent member is 75 or more in Shore C hardness, a hardness difference (Hs−H75) between the surface hardness (Hs) of the spherical constituent member and a hardness (H75) at a 75% point of a radius of the spherical constituent member from a center of the spherical constituent member is 3 or more and 10 or less in Shore C hardness, and a hardness difference (Hs−Ho) between the surface hardness (Hs) and a center hardness (Ho) of the spherical constituent member is 16 or more in Shore C hardness.
An object of the present disclosure is to provide a golf ball having a great change in an initial velocity associated with a change in a swing speed. The present disclosure provides a golf ball comprising a constituent member, wherein at least a part of the constituent member is formed of a cured product of a rubber composition comprising (a) a base rubber containing a natural rubber, (b) a co-crosslinking agent containing methacrylic acid and/or a metal salt thereof and (c) a crosslinking initiator.
An object of the present disclosure is to provide a golf ball having excellent durability and an increased spin rate on driver shots to travel a suppressed flight distance. The present disclosure provides a golf ball comprising a spherical constituent member, wherein the spherical constituent member is formed from a rubber composition containing (a) a rubber component containing a natural rubber, (b) a co-crosslinking agent, (c) a crosslinking initiator, and (d) an organic sulfur compound, a center hardness (Ho) of the spherical constituent member is 65 or more in Shore C hardness, a hardness difference (Hs−Ho) between a surface hardness (Hs) and the center hardness (Ho) of the spherical constituent member is less than 16 in Shore C hardness, and an absolute value of a hardness difference (Hs−H50) between the surface hardness (Hs) of the spherical constituent member and a hardness (H50) at a 50% point of a radius of the spherical constituent member from a center of the spherical constituent member is 10 or less in Shore C hardness.
An object of the present disclosure is to provide a golf ball having lowered resilience while maintaining the hardness of the golf ball. The present disclosure provides a golf ball comprising a constituent member, wherein at least a part of the constituent member is formed from a cured product of a rubber composition containing (a) a base rubber, (b) a co-crosslinking agent and (c) a crosslinking initiator, (a) the base rubber contains (a1) a natural rubber and a grafting ratio of (b) the co-crosslinking agent in the cured product of the rubber composition ranges from 40 mass % to 80 mass %.
A developing roller includes an electro-conductive shaft core and an elastic layer provided on an outer peripheral surface of the electro-conductive shaft core. The elastic layer includes a base layer formed of a rubber composition and an outermost layer formed on a surface of the base layer. The outermost layer is an incomplete film formed of a resin with a melting point of 120° C. or higher. A surface hardness of the elastic layer is 37.5 or more in MD-1 hardness.
A golf ball can include a core, a mid layer, and a cover. In the golf ball, a hardness Ho at a central point of the core, a core surface hardness Hs, a hardness H1 at a point to which a distance from the central point of the core can be equal to 25% of a radius of the core, a hardness H2 at a point to which a distance from the central point of the core can be equal to 75% of the radius of the core, a hardness Hm of the mid layer, and a hardness Hc of the cover can satisfy all of the following relational expressions:
A golf ball can include a core, a mid layer, and a cover. In the golf ball, a hardness Ho at a central point of the core, a core surface hardness Hs, a hardness H1 at a point to which a distance from the central point of the core can be equal to 25% of a radius of the core, a hardness H2 at a point to which a distance from the central point of the core can be equal to 75% of the radius of the core, a hardness Hm of the mid layer, and a hardness Hc of the cover can satisfy all of the following relational expressions:
Ho
≤
H
1
≤
H
2
≤
Hs
(
1
)
Ho
<
Hs
(
2
)
(
Hm
-
Hc
)
≤
(
Hs
-
Ho
)
(
3
)
(
Hs
-
Hc
)
≤
(
Hm
-
Hs
)
.
(
4
)
A mold for a golf ball can include a pair of mold halves. Each mold half can have a cavity face including a plurality of pimples. The cavity face can have a low-latitude zone and a high-latitude zone. The low-latitude zone can include a low-latitude base surface having an inner diameter larger than that of a phantom sphere of a cavity. The high-latitude zone can include a high-latitude base surface having an inner diameter equal to that of the phantom sphere. Each pimple can protrude from the low-latitude base surface or the high-latitude base surface. A pimple that intersects an equator plane of the phantom sphere or is proximal to the equator plane can protrude partially or entirely from the low-latitude base surface.
B29C 33/42 - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING - Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
B29C 43/20 - Making multilayered or multicoloured articles
An iron type golf club head includes a hitting face that has a plurality of score lines and a face center, a back surface, a sole surface, a top blade and a face thickness. On the back surface, a thick wall portion is formed over a region including a score line center position, the thick wall portion having a face thickness of greater than that of a part on the toe side thereof and greater than that of a part on the heel side thereof. The thick wall portion is formed such that it extends toward the toe side as it goes toward the blade side from the sole side. The iron type golf club head has a loft angle of greater than or equal to 46°. The face thickness is defined as a distance between the hitting face and the back surface.
Golf clubs; golf club heads; stands specially adapted for
holding golf clubs; grips for golf clubs; shafts for golf
clubs; fitted head covers for golf clubs; golf bags, with or
without wheels; golf bags; golf ball markers; golf balls;
golf equipment; golf gloves; golf practice equipment;
driving practice mats [golf articles]; squash equipment;
tennis equipment; badminton equipment; padel racquets;
sports equipment; toys for pets; toys; dolls; game machines
and apparatus.
A method for estimating a state of wax in a rubber compound according to a first aspect includes the following: acquiring a chromatogram of an extracted component, by separating components thereof, in which the wax is extracted from the rubber compound including the wax; and deriving a distribution of normal hydrocarbons in the wax based on the chromatogram.
A tire management system includes a management apparatus and a database portion. The tire management system acquires travel history data concerning a history of causes of degradation of tire performance of a tire mounted on a vehicle, and decides a replenishing agent for restoring the tire performance that has been degraded, based on the acquired travel history data.
A motorcycle tire set S includes a front wheel tire S1 and a rear wheel tire S2 each provided with a plurality of inclined grooves 3. Each inclined groove 3 includes a first portion 11 extending in a crown region Cr, a second portion 12 extending in a shoulder region Sh, and a third portion 13 connecting the first portion 11 and the second portion 12. Each third portion 13 includes a first groove edge 20e located on a leading edge side in a tire rotation direction R, and a second groove edge 20i located on a trailing edge side in the tire rotation direction R. The first groove edge 20e of the front wheel tire S1 is provided with a chamfered portion 10, and the second groove edge 20i of the rear wheel tire S2 is provided with a chamfered portion 10.
A motorcycle tire set S includes a front wheel tire S1 and a rear wheel tire S2 each provided with a plurality of inclined grooves 3. Each inclined groove 3 includes a first portion 11 extending in a crown region Cr, a second portion 12 extending in a shoulder region Sh, and a third portion 13 connecting the first portion 11 and the second portion 12. The third portion 13 has a smaller groove width than the first portion 11 and the second portion 12. The first portion 11, the second portion 12, and the third portion 13 are inclined in the same direction with respect to a tire circumferential direction. Each inclined groove 3 of the rear wheel tire S2 comes into contact with the ground from the first portion 11 toward the third portion 13 based on a tire rotation direction R.
Provided is a pneumatic tire that can suppress an increase in weight and deterioration of rolling resistance even when a protrusion-like mark having a large raised height is provided on a sidewall portion. A green tire production method 100 includes: a first step S1 of forming a cylindrical or annular unvulcanized carcass; a second step S2 of winding an unvulcanized sidewall rubber on each of a pair of outer circumferential surfaces of the carcass on an outer side in an axial direction; and a third step S3 of locally attaching an unvulcanized band-shaped rubber to a part of an outer circumferential surface of at least one of the sidewall rubbers.
Provided is a tire with excellent durability. The tire includes a tread rubber and a carcass containing a hybrid cord of at least one polyamide fiber yarn and at least one polyester fiber yarn, the hybrid cord having a twist coefficient K3 of 1800 or more and 2600 or less in final twisting as determined by R3×(D3)1/2 where R3 is a final twist number [times/10 cm] of the hybrid cord and D3 is a total fineness [dtex] of the hybrid cord, the twist coefficient K3 and a thickness L [mm] of the tread rubber giving a product (K3×L) of 15000 or more.
A putter-type golf club head has a top portion, a bottom portion, a heel portion, a toe portion, and a striking face having a variably textured region. The variably textured region includes a central portion and an outer portion laterally spaced from the central portion towards one of the heel portion and the toe portion. The central portion has a material ratio of less than 20% at a cutoff height of 0.1 mm and the outer portion has a material ratio greater than that of the central portion at the cutoff height of 0.1 mm. Variation of the textured region provides consistent ball speed upon impact at different lateral positions of the striking face.
A pneumatic tire (1) includes: a tread portion (2) including a land portion (24) divided by a plurality of main grooves (22) formed on a tread surface (21); an inner liner (7) constituting a tire inner surface (7A) on an inner side of the tread portion (2); and a mount member (10) which is provided on the tire inner surface (7A), and to which electric equipment can be attached. In the pneumatic tire (1), acetone extraction amount (AE2) of a rubber composition constituting the inner liner (7) is larger than acetone extraction amount AE1 of a rubber composition constituting the mount member (10).
B60C 5/14 - Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim with impervious liner or coating on the inner wall of the tyre
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
B60C 19/00 - Tyre parts or constructions not otherwise provided for
A pneumatic tire includes a tread portion, a pair of sidewall portions, a pair of bead portions, a carcass extending between the pair of bead portions, and an inner rubber extending between the pair of bead portions on an inner side of the carcass. The inner rubber includes a first portion extending in the tread portion with a first thickness and a second portion extending in each of or one of the pair of sidewall portions with a second thickness. The first thickness is greater than the second thickness. In a tire meridian cross-section, a cross-sectional area of the inner rubber is in a range from 1.5% to 10% of an inner-cavity cross-sectional area of the pneumatic tire.
A motorcycle tire includes a tread portion, a pair of sidewall portions, a pair of bead portions, and a carcass extending between the bead portions in a toroidal manner. Each of the sidewall portions is provided with a sidewall rubber. In each of the sidewall portions, a minimum thickness (Ts) is 50% or less of a minimum tire thickness (Ta) from a respective one of tread edges to a tire inner cavity surface. A minimum thickness (Ds) of the sidewall rubber is from 0.3 to 1.9 mm.
An apparatus for detecting decreased pressure includes a speed acquisition unit, a first index calculation unit, a second index calculation unit, and a decreased pressure detection unit. The speed acquisition unit acquires rotation speeds of a plurality of tires mounted to a vehicle. The first index calculation unit calculates a first decreased pressure index as an index for comparing the rotation speeds of the plurality of tires based on the rotation speeds. The second index calculation unit calculates a second decreased pressure index as an index different from the first decreased pressure index. The decreased pressure detection unit determines that at least one tire has a decreased pressure when both of the first decreased pressure index and the second decreased pressure index indicate that the at least one tire has a decreased pressure.
A tire includes a tread portion; a pair of bead portions; a pair of sidewall portions, each of which extend between the tread portion and a respective bead portion; a carcass that extends from one bead portion to the other, through the sidewall portions and tread portion; and an inner surface that defines a tire cavity; wherein the tread portion comprises a belt disposed outside of the carcass in a radial direction of the tire, the belt comprising one or more belt plies that extend in an axial direction of the tire; wherein each sidewall portion comprises an intermediate layer arranged inward in the tire radial direction from the carcass, wherein each intermediate layer comprises an outer edge that overlaps the belt and an inner edge arranged in the sidewall portion or bead portion; wherein the tire further comprises an inner layer arranged inward in the tire radial direction from the tread portion, the inner layer having a thickness in the radial direction defined by the carcass and inner surface; and wherein the thickness of the inner layer is greater than a thickness between the carcass and inner surface in the sidewall portions.
B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
A tire 1 includes a tread portion 2. The tread portion 2 includes tread ends Te, three circumferential grooves 3, and four land portions 4. The circumferential grooves 3 include one shoulder circumferential groove 5 and one crown circumferential groove 6. The land portions 4 include one shoulder land portion 9 and one crown land portion 10. The shoulder land portion 9 includes shoulder blocks having shoulder sipes. An inner end of the shoulder sipe in the tire axial direction terminates at a ground contact surface of the shoulder block. The crown land portion 10 includes crown blocks having crown sipe groups. The crown sipe group includes a first crown sipe having one end connected to the shoulder circumferential groove 5 and another end terminating at a ground contact surface of the crown block, a second crown sipe having one end connected to the crown circumferential groove 6 and another end terminating at the surface, and a third crown sipe having both ends terminating at the surface.
A heavy duty pneumatic tire includes a crown circumferential groove, a shoulder circumferential groove, crown lateral grooves, and crown blocks. The crown circumferential groove includes crown first-side vertexes and crown second-side vertexes and thus zigzags. The shoulder circumferential groove includes shoulder inner-side vertexes and shoulder outer-side vertexes. The crown lateral grooves are disposed at two pitch intervals of a zigzag of the crown circumferential groove and connect between the crown first-side vertexes and the shoulder inner-side vertexes. The crown blocks have crown sub-grooves having a groove width less than a groove width of the crown lateral groove. The crown sub-groove includes at least two transverse grooves extending across the crown block.
A pneumatic tire comprises: a tread portion having a ground contacting surface; a sidewall portions having an outer surface; a bead portions; a carcass extending between the bead portions; and an inner rubber extending between bead portions. The inner rubber comprises a first portion extending through the tread portion with a first thickness t1, and a second portion extending through the sidewall portion with a second thickness t2. The first thickness t1 is more than the second thickness t2. In a meridian cross section of the tire under its normal state, when a first reference point (Pb1), a second reference point (Pb2), a shoulder reference point (Ps), a reference line segment (Lb), and a shoulder line segment (Ls) are defined, then a length (L1) of the shoulder line segment (Ls) is 85.9% to 89.3% of a length (L2) of the reference line segment (Lb).
A pneumatic tire comprises a tread portion, a pair of sidewall portions, a pair of bead portions, a carcass extending between the portions, and an inner rubber extending between the portions, on the inner side of the carcass.
A pneumatic tire comprises a tread portion, a pair of sidewall portions, a pair of bead portions, a carcass extending between the portions, and an inner rubber extending between the portions, on the inner side of the carcass.
The inner rubber comprises a first portion extending through the tread portion with a first thickness and a second portion extending through the sidewall portions with a second thickness smaller than the first thickness. The land ratio of the tread portion 2 is 65% or more.
A motorcycle tire comprises a tread portion provided with a belt layer and a radially outer band layer. The belt layer comprises a first belt ply on a carcass 6 and a second belt ply thereon. The band layer is made of a spirally wound band cord and has a developed width smaller than that of the belt layer. In a meridian cross-section of the tire mounted on a standard wheel rim at an internal pressure of 10 kPa: the radius of curvature Rc of the ground contacting surface of the tire in its crown region is less than 95% of the cross-sectional width of the tire; and the radius of curvature Rc is smaller than a radius of curvature Rb of the ground contacting surface in shoulder regions.
B60C 9/22 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
Provided are tread rubber compositions and pneumatic tires which are excellent in abrasion resistance. Included is a tread rubber composition containing, based on 100% by mass of a rubber component therein, 10% by mass or more of styrene-butadiene rubber and 10% by mass or more of polybutadiene rubber, and having an absolute value of change in hardness before and after heat aging, |ΔHs|, satisfying the following relationship (1) and an absolute value of change in Swell before and after heat aging, |ΔSwell|, satisfying the following relationship (2):
Provided are tread rubber compositions and pneumatic tires which are excellent in abrasion resistance. Included is a tread rubber composition containing, based on 100% by mass of a rubber component therein, 10% by mass or more of styrene-butadiene rubber and 10% by mass or more of polybutadiene rubber, and having an absolute value of change in hardness before and after heat aging, |ΔHs|, satisfying the following relationship (1) and an absolute value of change in Swell before and after heat aging, |ΔSwell|, satisfying the following relationship (2):
|ΔHs|≤3.0 (1);
Provided are tread rubber compositions and pneumatic tires which are excellent in abrasion resistance. Included is a tread rubber composition containing, based on 100% by mass of a rubber component therein, 10% by mass or more of styrene-butadiene rubber and 10% by mass or more of polybutadiene rubber, and having an absolute value of change in hardness before and after heat aging, |ΔHs|, satisfying the following relationship (1) and an absolute value of change in Swell before and after heat aging, |ΔSwell|, satisfying the following relationship (2):
|ΔHs|≤3.0 (1);
|ΔSwell|≤20% (2).
