Abstract: A silicone rubber composite material includes silicone rubber, first carbon nanotubes having an average diameter of not more than 30 nm, and second carbon nanotubes having an average diameter of more than 30 nm and not more than 1000 nm. Per 100 parts by weight of the silicone rubber, 2.5 to 10 parts by weight of the first carbon nanotubes and 5 to 15 parts by weight of the second carbon nanotubes are included.

Abstract: A vibration-isolating device includes: a vibration source, which generates vibrations; and at least one vibration-isolating rubber which is fixed to the vibration source. The vibration source is supported by at least one support member that is fixed to a transmission-receiving member through the at least one vibration-isolating rubber. The vibration source and the at least one vibration-isolating rubber are configured such that a difference between a maximum value and a minimum value of resonant frequencies of a structure, which includes the vibration source, the at least one vibration-isolating rubber and the at least one support member, is equal to or smaller than 10 Hz when the vibration source is vibrated in six degrees of freedom. The at least one vibration-isolating rubber includes: 100 parts by mass of silicone rubber; and larger than 0 parts by mass and equal to or smaller than 3 parts by mass of carbon nanotubes.

Abstract: A silicone rubber composite material includes silicone rubber, first carbon nanotubes having an average diameter of not more than 30 nm, and second carbon nanotubes having an average diameter of more than 30 nm and not more than 1000 nm. Per 100 parts by weight of the silicone rubber, 2.5 to 10 parts by weight of the first carbon nanotubes and 5 to 15 parts by weight of the second carbon nanotubes are included.

Abstract: A sealing member is supported by a holding surface of a vane rotor and slides on a sealing surface formed by an inner surface of a housing rotor, so as to seal an advancing chamber and a retarding chamber from each other. The sealing member has a pressure-receiving surface and a diffuser surface. The pressure-receiving surface receives pressure of working fluid from a working chamber in a direction to the sealing surface. The diffuser surface forms a sealing gap between the diffuser surface and the sealing surface, so that the sealing surface becomes larger as the sealing surface is more separated from the working chamber in a circumferential direction. The sealing member has a deformable portion forming the pressure-receiving surface and the diffuser surface. The deformable portion is elastically deformed, so that the diffuser surface is more strongly pushed to the sealing surface, when the pressure of the working fluid is increased.

Abstract: A sealing member is supported by a holding surface of a vane rotor and slides on a sealing surface formed by an inner surface of a housing rotor, so as to seal an advancing chamber and a retarding chamber from each other. The sealing member has a pressure-receiving surface and a diffuser surface. The pressure-receiving surface receives pressure of working fluid from a working chamber in a direction to the sealing surface. The diffuser surface forms a sealing gap between the diffuser surface and the sealing surface, so that the sealing surface becomes larger as the sealing surface is more separated from the working chamber in a circumferential direction. The sealing member has a deformable portion forming the pressure-receiving surface and the diffuser surface. The deformable portion is elastically deformed, so that the diffuser surface is more strongly pushed to the sealing surface, when the pressure of the working fluid is increased.

Abstract: A hub 57 for a power transmission device consists of: an inner hub 59 consisting of a rigid body; a cylindrical section 61 consisting of an elastic body that is formed annularly around an outer circumference of the inner hub 59; an outer ring 63 consisting of a rigid body that is fixed on an outer circumference of the cylindrical section 61 and protrudes in an axially rearward direction; and a hub-side engagement section 65 consisting of an elastic body that is formed on an axially rearward circumferential surface of the outer ring 63 and that is engaged with a pulley side engagement section, wherein connection sections 81 consisting of elastic bodies that connect between a front end of the outer ring 63 and said hub-side engagement section 65 are formed at a front side of an outer circumference of the outer ring 63 where the hub-side engagement section 65 is not formed.

Abstract: Vulcanizing-bonding is carried out using at least a phenolic resin-based vulcanized adhesive F and a silicon compound-based vulcanized adhesive C. Based on an idea of making a penetration of water through a portion bonded with metal difficult, decreasing the adhesion with metal is prevented by utilizing the phenolic resin-based vulcanized adhesive F through which less water can penetrate than the silicon compound-based vulcanized adhesive C, and can increases a thickness of a membrane. Thereby, EPDM or AEM vulcanizable with a peroxide can be strongly bonded to metal, by forming a two-layered structure of the phenolic resin-based vulcanized adhesive F and the silicon compound-based vulcanized adhesive C. Further, a range of selecting a rubber material as an elastic member to be utilized by bonding to metal can be broadened.

Abstract: A power transmission device for transmitting torque of a driving unit to a driven unit includes a first rotator, a second rotator, and a torque transmission member. The first rotator is to be driven for rotation by the driving unit. The second rotator is coupled to the driven unit. The torque transmission member is made of an elastically deformable material for making contact with the first rotator and the second rotator to transmit torque from the first rotator to the second rotator. An outer periphery of the torque transmission member includes a contact surface for making contact with the rotators and a non-contact surface out of contact with the rotators. The non-contact surface is provided with an oxygen permeance suppression layer made of a material having an oxygen permeability that is less than that of the contact surface.

Abstract: A power transmission device for suppressing oxidation and degradation of dampers for improved damper life has dampers with contact surfaces for making contact with a pulley inner periphery and a hub outer periphery, and non-contact surfaces out of contact with the pulley inner periphery and the hub outer periphery. The non-contact surfaces have oxygen permeance suppression layers made of, for example, acrylic rubber, having an oxygen permeability less than that of the contact surfaces. Consequently, it is possible to suppress the permeance of oxygen into the dampers through the oxygen permeance suppression layers. Thus, even when the dampers rise in temperature, the outer peripheries thereof exposed directly to the air can be prevented from oxidizing and degradation.

Abstract: A scroll type compressor using a crank mechanism having enough freedom so that an amount of eccentricity of the movable scroll member becomes variable. An elastic body is inserted between the facing surfaces striking each other in the inside of the crank mechanism so as to prevent generation of a noise due to the collision of the parts when starting up or shutting down the compressor.

Abstract: An electromagnetic clutch which can completely meet an excessive starting torque upon starting. It is assumed that the width of each first gap in the rotating direction is the deformation and displacement of each elastic member which is smaller than the deformation and displacement of the elastic member based on a peak torque T1 just after the electromagnetic clutch is activated, and is generated based on a torque T slightly larger than a maximum torque T2 after the lapse of a predetermined time. Thus, when a torque (for example, T1) larger than the torque T is exerted on the elastic member, the outer peripheral surface of a second fitting portion abuts against the inner peripheral surface of a flange portion. As a result, the elastic member is not deformed by more than the above described deformation and displacement.