Kles Inc.

Republic of Korea

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2024 1
Before 2021 13
IPC Class
E04G 3/24 - Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons 2
F16L 3/16 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe 2
A62C 2/08 - Water curtains 1
A62C 3/04 - Fire prevention, containment or extinguishing specially adapted for particular objects or places for dust or loosely-baled or loosely-piled materials, e.g. in silos, in chimneys 1
A62C 3/06 - Fire prevention, containment or extinguishing specially adapted for particular objects or places of highly inflammable material, e.g. light metals, petroleum products 1
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Found results for  patents

1.

PLATFORM DEVICE FOR MOUNTING FIRE-FIGHTING EQUIPMENT IN INDOOR COAL YARD

      
Application Number KR2023013857
Publication Number 2024/071767
Status In Force
Filing Date 2023-09-15
Publication Date 2024-04-04
Owner KLES INC. (Republic of Korea)
Inventor
  • Cho, Sun Young
  • Ha, Seong Woo
  • You, Tai Woo
  • Lee, Sang Wan
  • Lee, Jae Min

Abstract

The present invention relates to a platform device for mounting fire-fighting equipment in an indoor coal yard and, more specifically, to a platform device for mounting fire-fighting equipment in an indoor coal yard, the device being arranged and moved within an indoor coal yard, and sensing the risk of fire outbreak within the coal yard, thereby preventing a disaster before ignition and, simultaneously, spraying water for fire extinguishing and chemical fire extinguishers in the event of a real fire outbreak.

IPC Classes  ?

  • A62C 3/04 - Fire prevention, containment or extinguishing specially adapted for particular objects or places for dust or loosely-baled or loosely-piled materials, e.g. in silos, in chimneys
  • A62C 3/06 - Fire prevention, containment or extinguishing specially adapted for particular objects or places of highly inflammable material, e.g. light metals, petroleum products
  • A62C 35/02 - Permanently-installed equipment with containers for delivering the extinguishing substance
  • A62C 2/08 - Water curtains
  • A62C 5/00 - Making of fire-extinguishing materials immediately before use
  • A62C 31/02 - Nozzles specially adapted for fire-extinguishing
  • A62C 31/28 - Accessories for delivery devices, e.g. supports
  • A62C 37/38 - Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
  • B05B 7/24 - Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
  • B05B 15/70 - Arrangements for moving spray heads automatically to or from the working position

2.

BUCKLING-STABILIZED SNUBBER HAVING OVERLAPPED RESERVOIRS

      
Application Number KR2019011624
Publication Number 2020/197010
Status In Force
Filing Date 2019-09-09
Publication Date 2020-10-01
Owner KLES INC. (Republic of Korea)
Inventor
  • Ha, Seung Woo
  • Song, Ki O
  • Lee, Hyeon Seok
  • Lee, Jae Min
  • Lee, Ho Ryeol

Abstract

The present invention provides a buckling-stabilized snubber having overlapped reservoirs, the snubber having an inner reservoir and an outer reservoir which are oil storage spaces, and which are arranged to be overlapped in a radial direction so as to reduce the full length of the snubber, thereby being stable against buckling.

IPC Classes  ?

  • F16L 3/217 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe allowing movement in transverse direction the movement being hydraulically or electrically controlled hydraulically
  • F16L 3/205 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe allowing movement in transverse direction having supporting springs

3.

GROUND ASSEMBLING- AND FARMING-TYPE SOLAR STRUCTURE

      
Application Number KR2019016115
Publication Number 2020/111668
Status In Force
Filing Date 2019-11-22
Publication Date 2020-06-04
Owner KLES INC. (Republic of Korea)
Inventor
  • Jeon, Hyunik
  • Song, Kio
  • Back, Jinsu
  • Yoo, Jaejong
  • Lee, Jaemin
  • Son, Jinkug
  • Sa, Jinkyu

Abstract

The present invention relates to a ground assembling-and farming-type solar structure in which the inclination angle of a plurality of solar panels disposed on a second unit coupled to the upper end portion of a first unit fixed to farmland can be adjusted by a third unit, as shown in the drawing, so as to be capable of performing photovoltaic power generation and cultivation in the same place, significantly improving convenience in construction such as assembly and installation, and ensuring the amount of sunshine required for the normal growth of crops.

IPC Classes  ?

  • H02S 20/32 - Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
  • H02S 20/10 - Supporting structures directly fixed to the ground
  • F16B 2/02 - Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening

4.

SPACE SEPARATION-TYPE BUS STOP HAVING FINE DUST REDUCTION SYSTEM

      
Application Number KR2019005820
Publication Number 2020/101130
Status In Force
Filing Date 2019-05-15
Publication Date 2020-05-22
Owner KLES INC. (Republic of Korea)
Inventor
  • Jeon, Hyunik
  • Back, Jinsoo
  • You, Taiwoo
  • Park, Kiman
  • Cho, Sunyoung

Abstract

The present invention relates to a system for reducing fine dust at a stop, which prevents passengers waiting at a public transportation stop in a heavy-traffic area from being exposed to emissions from vehicles and fine dust and, more specifically, to a space separation-type bus stop having a fine dust reduction system, comprising: a stop main body having a rear surface, left and right side surfaces, and a ceiling; an outer surface part including a fence for reducing fine dust and harmful gases, a sensor for measuring the degree of air pollution, a passenger flow sensor for measuring and monitoring the number of passengers, walking speeds, and position patterns when the passengers are not moving, and a plurality of diffusers for discharging purified air; and an air purification unit provided in the stop main body to purify air, wherein external air is introduced into the main body by using a blower by passing through an air inlet and a pre-filter, and the introduced air is purified through a filter device part and discharged through the diffusers, the air purification unit having a controller for controlling air purification and discharge at one side of the inner surface of the main body. As described above, the space separation-type bus stop having a fine dust reduction system according to the present invention discharges purified air to the inside of the stop to reduce fine dust inside the stop, thus protecting passengers waiting to board at the stop from air pollution generated from vehicles or existing air pollution in the atmosphere, determines the presence of passengers by using the sensor and the passenger flow sensor, performs air purification according to the number of moving passengers and fine changes in the degree of contamination of the stop and the surroundings of the stop, reduces maintenance costs by using power produced by a solar panel, optimizes the direction of airflow through which the purified air is discharged, reduces installation costs since each stop is installed with various filter layers according to the degree of contamination, and prevents contaminated air flowing from a road by using the fence.

IPC Classes  ?

  • E04H 1/12 - Small buildings or other erections for limited occupation, erected in the open air or arranged in buildings, e.g. kiosks, waiting shelters for bus stops or for filling stations, roofs for railway platforms, watchmen's huts or dressing cubicles
  • H02S 20/23 - Supporting structures directly fixed to an immovable object specially adapted for buildings specially adapted for roof structures
  • F24F 3/16 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filteringAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by sterilisationAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by ozonisation
  • F24F 9/00 - Use of air currents for screening, e.g. air curtains
  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • G01N 15/02 - Investigating particle size or size distribution

5.

NONCONTACT TYPE VIBRATION MONITORING SYSTEM FOR SMALL DIAMETER PIPES OF NUCLEAR POWER PLANT, WHICH ALLOWS SELF-VIBRATION CORRECTION

      
Application Number KR2018008289
Publication Number 2019/103276
Status In Force
Filing Date 2018-07-23
Publication Date 2019-05-31
Owner KLES INC. (Republic of Korea)
Inventor
  • Cho, Sunyoung
  • Ha, Seungwoo
  • Lee, Jaemin
  • Song, Kio
  • Lee, Yonggu
  • Oh, Hongyoung
  • Son, Jinkug

Abstract

The present invention relates to a noncontact type vibration monitoring system for small diameter pipes of a nuclear power plant, which allows self-vibration correction and, more specifically, to a technology for a noncontact type vibration monitoring system for small diameter pipes of a nuclear power plant, which allows self-vibration correction. The monitoring system measures vibration of a structure or a pipe which is difficult for a worker to approach due to a concern of radiation exposure in a nuclear power plant, and thus enables prediction and prevention of damage to the structure or the pipe, and, when a damaging accident occurs, enables a prompt response. The present invention as a technical means for solving the above problem may comprise: a sensor support; a sensor fixing jig disposed at an upper portion of the sensor support; a noncontact type vibration sensor disposed at an upper portion of the sensor fixing jig; a contact type vibration sensor disposed at the sensor fixing jig to measure self-vibration of the sensor fixing jig; and a correction calculating unit for correcting the self-vibration measured by the contact type vibration sensor by using a vibration value measured by the noncontact type vibration sensor.

IPC Classes  ?

  • G01H 1/00 - Measuring vibrations in solids by using direct conduction to the detector
  • G21C 17/017 - Inspection or maintenance of pipe-lines or tubes in nuclear installations
  • G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
  • G01D 11/16 - Elements for restraining or preventing the movement of parts, e.g. for zeroising

6.

PIPE VIBRATION-CONTROLLING SMART DAMPER CAPABLE OF COMPENSATING FOR THERMAL DISPLACEMENT

      
Application Number KR2018004550
Publication Number 2019/054597
Status In Force
Filing Date 2018-04-19
Publication Date 2019-03-21
Owner KLES INC. (Republic of Korea)
Inventor
  • Cho, Sunyoung
  • Ha, Seungwoo
  • Lee, Jaemin
  • Song, Kio
  • Lee, Yonggu
  • Yoo, Jaejong
  • Son, Jinkug

Abstract

The present invention relates to a smart damper capable of compensating for thermal displacement generated by a temperature change of a pipe and capable of absorbing shock by controlling vibration and, more specifically, to a pipe vibration-controlling smart damper capable of compensating for thermal displacement, the smart damper comprising a vibration damping part and a thermal displacement compensation part, wherein the vibration damping part is a polyurethane elastic member and performs vibration and thermal displacement compensation, and the thermal displacement compensation part, which has a compression spring and an impact sleeve and is at both sides of the vibration damping part, primarily compensates for thermal displacement before the vibration damping part performs thermal displacement compensation, performs vibration and thermal displacement compensation in two stages through the vibration damping part and the thermal displacement compensation part so as to stably absorb vibration or shock, has a structure simpler than that of a conventional damper, has low costs for materials, has excellent durability so as to reduce production, maintenance and management costs, and is provided with shape memory alloy wires such that the restoring capacity of the compression spring and the polyurethane elastic member is high.

IPC Classes  ?

  • F16F 15/08 - Suppression of vibrations of non-rotating, e.g. reciprocating, systemsSuppression of vibrations of rotating systems by use of members not moving with the rotating system using elastic means with rubber springs
  • F16L 3/16 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe

7.

FURNACE SCAFFOLDING SYSTEM FOR MAINTAINING BOILER AND CONSTRUCTION METHOD THEREFOR

      
Application Number KR2016013837
Publication Number 2018/101493
Status In Force
Filing Date 2016-11-29
Publication Date 2018-06-07
Owner KLES INC. (Republic of Korea)
Inventor
  • Ha, Seung-Woo
  • Lee, Tae-Ho
  • Lee, Hae-Sung
  • Kim, Jeong-Min
  • Cho, Sun-Young
  • You, Tai-Woo

Abstract

The present invention relates to a furnace scaffolding system for maintaining a boiler and a construction method therefor, the system comprising: a furnace scaffold provided so as to form a plurality of steps on the inner lateral side of the boiler; a lifting platform provided in a matrix form, and supporting the furnace scaffold by means of a plurality of lifting wire ropes; and a lifting device provided at a heavy girder part of the boiler, and lifting and supporting the lifting platform by means of a plurality of strands and a plurality of supporting wire ropes, which are inserted into the boiler, and thus the furnace scaffold for maintaining the boiler is provided by using the lifting platform so as to disperse the load of the upper and lower parts of the furnace scaffold for maintaining the boiler, thereby enabling the risk of collapse to be prevented and enabling the safety of the furnace scaffold to be improved.

IPC Classes  ?

  • E04G 3/24 - Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
  • E04G 3/32 - Hoisting devicesSafety devices
  • E04G 3/30 - Mobile scaffoldsScaffolds with mobile platforms suspended by flexible supporting elements, e.g. cables
  • E04G 5/08 - Scaffold boards or planks
  • E04G 5/14 - Railings
  • E04G 5/04 - Means for fastening, supporting, or bracing scaffolds on or against building constructions
  • E04G 5/10 - Steps or ladders specially adapted for scaffolds
  • E04G 5/00 - Component parts or accessories for scaffolds

8.

LOAD MEASUREMENT SYSTEM

      
Application Number KR2015010148
Publication Number 2017/039053
Status In Force
Filing Date 2015-09-25
Publication Date 2017-03-09
Owner KLES INC. (Republic of Korea)
Inventor
  • Cho, Sun Young
  • Ha, Ha, Seung Woo
  • Back, Jin Su
  • Hwang, Won Shik

Abstract

The present invention relates to a load measurement system and, more specifically, to a load measurement system for: introducing a load measurement device, which substitutes a connective rod between a spring hanger for supporting a pipe of a power plant and the pipe; enabling real-time monitoring by normally measuring a load by using the load measurement device; and enabling, during a maintenance period of the power plant, the load to be measured by connecting the measurement device with a portable measurement device so as to verify whether the spring for supporting the load of the pipe normally operates without deterioration and is reliable.

IPC Classes  ?

  • G01L 5/00 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
  • G01L 1/20 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
  • G01L 25/00 - Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
  • G01L 1/02 - Measuring force or stress, in general by hydraulic or pneumatic means

9.

MAINTENANCE WORK PLATFORM OF WIND POWER GENERATOR

      
Application Number KR2015004174
Publication Number 2016/175339
Status In Force
Filing Date 2015-04-27
Publication Date 2016-11-03
Owner KLES INC. (Republic of Korea)
Inventor
  • Cho, Sun Young
  • Jeon, Hyun Ik
  • Ha, Seung Woo
  • Lee, Tae Ho
  • You, Tai Woo

Abstract

The present invention relates to a maintenance work platform of a wind power generator, comprising: a tower work plate provided to be spaced from the outer circumference of the wind power generator tower so as to rise along the longitudinal direction of the tower, and onto which a user boards; a roller provided between the tower work plate and the tower; and an operation part comprising a variable support, which supports the roller such that the roller comes into close contact with the outer circumference of the tower, and has a variable length. According to the present invention, the maintenance work platform of a wind power generator can be boarded by the user, when provided to the tower, and can be lifted, thereby improving the stability and work efficiency of the user by lessening the influence of wind or the environment thereon. In addition, the position of a maintenance device can be adjusted according to the position of a blade in a state in which the blade is stopped, such that the blade and the tower can be maintained, thereby allowing work efficiency to be improved.

IPC Classes  ?

  • E04G 3/24 - Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
  • E04G 3/28 - Mobile scaffoldsScaffolds with mobile platforms

10.

HYDRAULIC SNUBBER

      
Application Number KR2015003945
Publication Number 2016/043398
Status In Force
Filing Date 2015-04-21
Publication Date 2016-03-24
Owner KLES INC. (Republic of Korea)
Inventor
  • Cho, Sun Young
  • Ha, Seung Woo
  • An, Jong Goo
  • Choi, Hyun Su

Abstract

Provided in the present invention is a hydraulic snubber, which is installed on the outer surface of a pipe to prevent damage to the pipe by mitigating shock applied from outside of the pipe, and which is operated using flow resistance or elastic force of a spring to prevent damage to the pipe due to earthquakes or external shock. The objective of the present invention is achieved by the hydraulic snubber comprising first and second buffer units which absorb vibration and shock by limiting the flow resistance and movement of a fluid, wherein the first and second buffer units comprise first and second pistons that are integrally formed with a body provided with seal and packing grooves on the outer circumferential surface thereof, so that a seal and a packing can be respectively assembled thereto, wherein the first piston is provided with a valve hole on a lower portion to which a first check valve is coupled, and wherein the second piston is provided with a valve hole on an upper portion to which a second check valve is coupled.

IPC Classes  ?

  • F16F 9/32 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium Details
  • F16F 9/34 - Special valve constructionsShape or construction of throttling passages
  • F16F 9/50 - Special means providing automatic damping adjustment

11.

PIPE LIFESPAN MANAGEMENT SYSTEM ASSOCIATED WITH THREE DIMENSIONAL DISPLACEMENT MEASUREMENT APPARATUS

      
Application Number KR2014007073
Publication Number 2016/017841
Status In Force
Filing Date 2014-07-31
Publication Date 2016-02-04
Owner KLES INC. (Republic of Korea)
Inventor
  • Cho, Sun Young
  • Jeon, Hyun Ik
  • Ha, Seoung Woo
  • Kim, Hwa Soo
  • Hwang, Won Shik

Abstract

The present invention relates to a pipe lifespan management system associated with a three-dimensional displacement measurement apparatus, which comprises: a thermal stress calculation unit for calculating thermal stress over a time at a predetermined point of a pipe measured through the three-dimensional displacement measurement apparatus; a mechanical stress database which includes data of the three-dimensional displacement measurement apparatus and calculates stress by a mechanical load at the measured predetermined point of the pipe; a creep data calculation unit for calculating creep data on the basis of the stress by the mechanical load; a use coefficient data calculation unit for calculating principal stress over a time from the stress by the thermal stress and the mechanical load and calculating accumulated use coefficient data over a time from the principal stress; and a pipe lifespan prediction unit for predicting a lifespan of the pipe from the accumulated use coefficient data and the creep data. The present invention can remarkably increase effectiveness of pipe lifespan management through accurate investigation of fatigue damage and creep damage with respect to a weakened point of the pipe, and manage a lifespan by considering the thermal stress and displacement in connection with displacement of the pipe changed by heat.

IPC Classes  ?

  • G06Q 50/06 - Energy or water supply
  • G01B 21/32 - 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 the deformation in a solid
  • G01N 3/60 - Investigating resistance of materials, e.g. refractory materials, to rapid heat changes
  • G01N 3/08 - Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces

12.

REFLECTIVE METAL HEAT-INSULATING MATERIAL

      
Application Number KR2014013109
Publication Number 2015/163560
Status In Force
Filing Date 2014-12-31
Publication Date 2015-10-29
Owner
  • KLES INC. (Republic of Korea)
  • BHI CO.,LTD. (Republic of Korea)
Inventor
  • Cho, Sun-Young
  • Jeon, Hyun-Ik
  • Song, Ki-O
  • Woo, Jong-Inn

Abstract

The present invention relates to a reflective metal heat-insulating material that comprises a plurality of heat-insulating sheets made of a metal thin plate and laminated one above another, each of which includes a linear portion having a linear sectional shape and first and second triangular portions that have triangular sectional shapes of which the vertices are disposed in opposite directions, wherein the heat-insulating sheets are laminated one above another such that the first triangular section and a second triangular section of another heat-insulating sheet adjacent thereto cross each other at a preset angle. Thanks to the structural feature, the present invention can achieve an optimal heat-shielding effect and a high heat-insulating capability, and can satisfy structural stability without a separate fixing apparatus.

IPC Classes  ?

  • E04B 1/80 - Heat insulating elements slab-shaped
  • B32B 5/00 - Layered products characterised by the non-homogeneity or physical structure of a layer
  • B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic

13.

MULTI-DIMENSIONAL BUFFERING DEVICE FOR PIPE

      
Application Number KR2014003711
Publication Number 2014/193087
Status In Force
Filing Date 2014-04-28
Publication Date 2014-12-04
Owner KLES INC. (Republic of Korea)
Inventor
  • Cho, Sun Young
  • Ha, Seung Woo
  • An, Jong Gu
  • Baek, Jin Su
  • Choi, Hyun Su
  • Na, Chung Ha

Abstract

A multi-dimensional buffering device for a pipe according to the present invention is a buffering device disposed between a pipe and a support surface to absorb vibration and shock applied to the pipe, and comprises: a main buffering device connected to the pipe or the support surface to absorb a shock applied in a linear direction; and a plurality of sub buffering devices, each of which has one side connected to the main buffering device and the other side connected to the support surface or the pipe to absorb a shock applied in a lateral direction, and thus shock applied in every direction of the pipe can be absorbed by a buffering unit and a buffering action is performed by using the elastic force of a buffering spring and fluid flow resistance, thereby improving shock absorbing performance.

IPC Classes  ?

  • F16L 55/04 - Devices damping pulsations or vibrations in fluids
  • F16L 55/02 - Energy absorbersNoise absorbers
  • F16L 3/16 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe

14.

THREE-AXIS DISPLACEMENT MEASUREMENT APPARATUS

      
Application Number KR2012005092
Publication Number 2014/003217
Status In Force
Filing Date 2012-06-27
Publication Date 2014-01-03
Owner KLES INC. (Republic of Korea)
Inventor Cho, Sun-Young

Abstract

The three-axis displacement measurement apparatus according to the present invention includes: a fixed grip fixed to a hanger which supports a structure to be measured; a rotating body rotatably supported by a fixing plate; a first pipe rotatably connected to the rotating body by a first hinge connection unit; a second pipe rotatably connected to the first pipe by a second hinge connection unit; a ball joint connecting the second pipe to the fixed grip to allow 360-degree rotation; a first encoder disposed in the first hinge connection unit to measure the angle between the rotating body and the first pipe; a second encoder disposed in the second hinge connection unit to measure the angle between the first pipe and the second pipe; and a third encoder disposed in the rotating body to measure the plane rotation angle of the rotating body. According to the present invention, restrictions at an installation site can be minimized, measurement accuracy can be improved through the use of a plurality of encoders for measuring the rotation angle, and a reduction in size is made possible.

IPC Classes  ?

  • G01B 5/00 - Measuring arrangements characterised by the use of mechanical techniques
  • G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapersMeasuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes