Abstract

A method of reducing vibration in a rotary system of a power generator, comprising balancing said rotary system, characterized by providing a rotational element (220) comprising a chamber (210) having a fulcrum on a rotational axis (240) of said rotational element (200), comprising a circumferential balancing area (220) and being partially filled with an amount of a thixotropic balancing substance (230). A corresponding apparatus and system.

IPC Classes  ?

• F04D 29/66 - Combating cavitation, whirls, noise, vibration, or the likeBalancing
• F16F 15/36 - Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels operating automatically
• F01D 5/02 - Blade-carrying members, e.g. rotors
• F03B 11/00 - Parts or details not provided for in, or of interest apart from, groups

Abstract

A method of treating a surface of an object comprising a rubber material and in particular a bladder for use in a process for making a vehicle tyre. The method comprises subjecting the surface to a gas at a low pressure at which the gas is susceptible of forming plasma, and causing the gas to form plasma. In order to obtain repellent properties of the surface of the rubber material fluorine gas such as tetrafluormethane or hexafluorethane is used. Preferably the treatment is performed until there is obtained a surface layer of the rubber material with properties modified by the treatment having an expected lifetime corresponding to the expected lifetime of the object.

IPC Classes  ?

• B29C 59/14 - Surface shaping, e.g. embossingApparatus therefor by plasma treatment
• B05D 7/24 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
• C23C 16/50 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges

Abstract

A method of reducing vibration in a rotary system (120, 130) of a motor vehicle, for example a car (100), comprising: balancing said rotary system (120, 130), characterized by providing a rotational element (300, 302-306) comprising a chamber (310-312) having a fulcrum on a rotational axis (340) of said rotational element (300, 302-306), comprising a circumferential balancing area (320) and being partially filled with an amount of a thixotropic balancing substance (330). A corresponding apparatus and system.

IPC Classes  ?

• B64C 27/00 - RotorcraftRotors peculiar thereto
• F16F 15/16 - Suppression of vibrations in rotating systems by making use of members moving with the system using a fluid
• F16F 15/36 - Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels operating automatically
• G01M 1/36 - Compensating imbalance by adjusting position of masses built-in the body to be tested

Abstract

A method of reducing vibration in a rotary system (120, 130, 140) of a watercraft, for example a cargo ship (100), comprising balancing said rotary system (120, 30, 140), characterized by providing a rotational element (300, 302-306) comprising a chamber (310-312) having a fulcrum on a rotational axis (340) of said rotational element (300, 302-306), comprising a circumferential balancing area (320) and being partially filled with an amount of a thixotropic balancing substance (330). A corresponding apparatus and system.

IPC Classes  ?

• B63H 21/30 - Mounting of propulsion plant or unit, e.g. for anti-vibration purposes
• F16F 15/36 - Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels operating automatically

Abstract

A method of processing a vehicle tyre, comprising inserting a delimiter (471) into the tyre by forming the delimiter from a delimiter material; and a corresponding apparatus and system.

IPC Classes  ?

• B29D 30/06 - Pneumatic tyres or parts thereof
• F16F 15/32 - Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels
• G01M 1/32 - Compensating imbalance by adding material to the body to be tested, e.g. by correcting-weights
• B60C 19/00 - Tyre parts or constructions not otherwise provided for

Abstract

A method of processing a vehicle tyre, comprising mounting the tyre to an apparatus for handling, for example moving, transporting and rotating, the tyre; and dismounting the tyre from the apparatus for handling the tyre; and a corresponding apparatus and system.

IPC Classes  ?

• B29D 30/06 - Pneumatic tyres or parts thereof
• G01M 1/32 - Compensating imbalance by adding material to the body to be tested, e.g. by correcting-weights
• F16F 15/32 - Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels

Abstract

Visco-elastic tyre balancing compositions comprising 1) 85 to 97% by weight of a glycol ether component comprising one or more ethylene/propylene glycol copolymer ethers of the general formula (I) or the general (II) or mixtures thereof R-O{[CH(CH3)CH2-O-]m[CH2-CH2-O-]n}H (I) R1-(O-{[CH(CH3)CH2-O-]m[CH2-CH2-O-]n}H)2 (II) wherein R is hydrogen or an alkyl group of 2-8 carbon atoms; R1 is an alkylene moiety of 2-8 carbon atoms in which the two substituents are not carried on the same carbon atom; m is the mole percentage of propylene glycol in the ethylene/propylene glycol copolymer moiety or moieties; and n is the mole percentage of ethylene glycol in the ethylene/propylene glycol copolymer moiety or moieties, wherein the ratio n: m is in the range from 35:65 to 80:20; each glycol copolymer compound having a number average molecular weight in the range of 2000-10000; and 2) 3 to 15% by weight of a fumed silica gel former; said balancing compositions being visco-elastic and having a Storage Modulus (G') between 1500 Pa and 5000 Pa at 22oC, a Loss Modulus (G") smaller than the Storage Modulus up to a Cross Over Frequency of 10-40 Hz, and a Critical Yield Stress exceeding 2 Pa.

IPC Classes  ?

• F16F 15/36 - Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels operating automatically
• C08K 3/36 - Silica
• B60C 19/00 - Tyre parts or constructions not otherwise provided for
• C08L 71/02 - Polyalkylene oxides

Abstract

A method for reducing vibration in a rotary system (130,131,133) of an article processing machine, for example a washing machine, comprising balancing said rotary system, characterized by providing a substantially circular chamber having a fulcrum on an axis (132) of said rotary system and being partially filled with an amount of a thixotropic balancing substance. A system for reducing vibration in a rotary system of an article processing machine according to the method, and a corresponding balancing device, drum and drum wheel.

IPC Classes  ?

• D06F 37/22 - Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casingPreventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
• D06F 37/24 - Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casingPreventing or damping vibrations in machines with a receptacle rotating or oscillating about a vertical axis

Abstract

A method for reducing vibration in a rotary system (140; 240a; 240b; 340a; 340b) of an aircraft (100), for example an aeroplane or a rotorcraft, such as a helicopter, comprising balancing said rotary system (140; 240a; 240b; 340a; 340b),characterized by providing a substantially circular chamber (232a, 233a, 234b, 235a, 236a, 237a; 232b, 233b, 234b, 235b, 237b; 335a; 335b; 433a; 433b; 433c; 535a; 535b; 535c) having a fulcrumon an axis (260a; 260b; 360a; 360b; 460a; 460b; 460c; 560a; 560b; 560c) of a shaft (131; 231a; 231b; 331a; 331b; 431a; 431b; 431c; 531a; 531b; 531c) of said rotary system (140; 240a; 240b; 340a; 340b) and being partially filled with an amount of a thixotropic balancing substance (338a; 338b; 438a; 438b; 438c; 538a; 538b; 538c). An apparatus, and a system, for reducing vibration in a rotary system (140; 240a; 240b; 340a; 340b) of an aircraft (100) according to the method.

IPC Classes  ?

• B64C 27/00 - RotorcraftRotors peculiar thereto
• F16F 15/36 - Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels operating automatically

Abstract

A method of analysing a vehicle wheel comprising a tyre of a predetermined configuration and a thixotropic balancing substance, comprising rotating the vehicle wheel with a predetermined number of revolutions for a period of time, wherein a tread surface of the tyre is pressed in a first contact area against a rotatable drum with a predetermined force, and a first acceleration in the first contact area is measured with a measuring device; rotating another vehicle wheel comprising another tyre of the predetermined configuration with the predetermined number of revolutions for another period of time, the other vehicle wheel being conventionally balanced and having another residual unbalance, wherein another tread surface of the other tyre is pressed in a second contact area against the rotatable drum with the predetermined force, and a second acceleration in the second contact area is measured with the measuring device and if the first acceleration is less than or equal to the second acceleration, determining that the vehicle wheel is balanced. An apparatus, and a system, for analysing a vehicle wheel comprising a tyre of a predetermined configuration and a thixotropic balancing substance according to the method.

IPC Classes  ?

• G01M 1/30 - Compensating imbalance
• G01M 1/36 - Compensating imbalance by adjusting position of masses built-in the body to be tested

Abstract

A method of processing a vehicle tyre and a thixotropic balancing substance (251, 261), comprising providing a first amount of the balancing substance (251, 261) to a first circumferential balancing area (250, 260) on an inner side of the vehicle tyre comprising distributing the first amount of the balancing substance on the first balancing area substantially uniformly; and a corresponding apparatus and system. In one embodiment a varnish layer comprising manoparticles (252, 262) is provided on the first circumferential balancing area (250, 260) to increase the movability of the thixotropic balancing substance (251, 261) on the balancing area (250, 260).

IPC Classes  ?

• B60C 19/00 - Tyre parts or constructions not otherwise provided for