Abstract: There is disclosed a boot for a constant-velocity universal joint, in which a secondary molded portion including a thick portion is formed on an inner peripheral portion of a large-diameter side end portion formed as a primary molded member and in which a material in secondary molding is prevented from leaking. A manufacturing method includes: a step of forming a secondary molding space between a large-diameter side end portion inner peripheral surface of the primary molded member and an outer peripheral surface of a core mold; and a step of injecting a molten material into the secondary molding space to mold the secondary molded portion.

Abstract: A resin boots for constant velocity universal joint, including: a resin bellows including an approximately conical bellows-shaped portion with its inner hollow part, a small diameter end portion communicated with an inner space of the bellows-shaped portion and arranged at one end, and a large diameter side end portion communicated with the inner space of the bellows-shaped portion and arranged at the other end; a large thickness portion formed in an inner surface of a large diameter side end portion of the resin bellows in accordance with an injection molding, protruded in the vertical direction to the center of the large diameter side end portion and arranged in the circumferential direction at regular intervals; and a small thickness portion arranged between the large thickness portions and formed thinner in the diametrical direction compared with large thickness portion.

Abstract: A liquid sealed mount 10 is composed of a vibration damping body 13 and a ring-shaped elastic body 14, the vibration damping body 13 is attached to a vehicle body frame 11, and the ring-shaped elastic body 14 absorbing vibration is incorporated between the vehicle body frame 11 and a bottom-wall side member 12. Owing to this, since the vehicle body frame 11 receives a load, a case 16 is not deformed. There is no need of making strength of the vibration damping body 13 higher, whereby reduction in weight and costs and downsizing are achieved. Since a load is applied in a compression direction of the ring-shaped elastic body 14, some cracks are prevented from occurring in the ring-shaped elastic body 14. Since both a vibration absorbing function and a vibration damping function are simultaneously provided, sufficient damping performance can be secured.

Abstract: An antivibration mounting apparatus (30) is provided with a case (31) fixed to a turning table (13) and a stud (33) fixed to a cab (20). An elastic body (34) is provided between the case (31) and the stud (33), and relative displacement of the stud (33) to the case (31) in the diameter direction is suppressed by the elastic body (34). On the lower part of the case (31), an attenuating mechanism (40) having an attenuating liquid (43) stored in a liquid chamber (42) and an attenuating member (41) fixed by the stud (33) is provided. Furthermore, on the upper part of the case (31), an air spring (50) supported by the stud (33) or the case (31) is provided, and a load transmitted from the cab (20) to the stud (33) in the shaft direction is supported by the air spring (50).

Abstract: A viscous damper having an annular inertial mass body received in a case together with a damping liquid, and a hub for fixing the case on the rotary shaft of an internal combustion engine. The case including a case main body of substantially U-shaped cross section, and a cover for liquid-tightly closing an opening directed to one axial side of the main body, and defining a sealed chamber in the inside. The inertial mass body is made by superposing and joining a plurality of annular plates. By thrust bearings attached in holes in the annular plate on body axial sides of the inertial mass body and by a journal bearing attached in a recessed groove in the inner periphery of the inertial mass body, the inertial mass body is supported both axial sides and radially and disposed for peripheral rotation in the sealed chamber.

Abstract: An in-vehicle player which is mounted in a dashboard in a passenger room of a vehicle comprises: an outer housing to be assembled in a mount space provided in the dashboard; a device body contained in the outer housing; and a cushion member interposed between the outer housing and two side surfaces of the device body, wherein the cushion member is made of viscous elastic material, the cushion member has an end surface which is substantially parallel to a shearing direction thereof and stuck to a mount surface of the device body by viscosity thereof, and the cushion member has another end surface which is substantially parallel to the shearing direction and stuck to a mount surface of the outer housing by viscosity thereof, thereby to attach the cushion member to be elastically deformable in the shearing direction between the outer housing and the two side surfaces of the device body.

Abstract: The piston seal member is formed of a crosslinked rubber composition, the rubber composition including 100 parts by weight of an ethylene-propylene rubber, 20 to 60 parts by weight of a first carbon black, 50 to 100 parts by weight of a second carbon black, and 5 to 20 parts by weight of carbon nanofiber having an average diameter of 0.5 to 500 nm, the total amount of the first carbon black and the second carbon black being 70 to 160 parts by weight. The first carbon black has an average particle diameter of 35 to 100 nm and a DBP absorption of 50 to 200 ml/100 g. The second carbon black has an average particle diameter that is greater than the average particle diameter of the first carbon black and ranges from 60 to 500 nm and a DBP absorption of 5 to 50 ml/100 g.

Abstract: Shifting prevention and sealing property between a boot for a constant velocity universal joint, having a thick portion on the inner peripheral surface of a large-diameter-side end portion and the outer peripheral surface of a tripod joint casing are enhanced, costs for preparing the casing are reduced, and the preparation is facilitated. One or a plurality of seal lips are disposed in the form of protrusions over the whole periphery in a peripheral direction of the inner peripheral surface of the large-diameter-side end portion of the boot for the tripod joint, into which the casing of the tripod joint is inserted, shift preventive walls are disposed on opposite sides of an axial direction via the seal lip, and inner diameters of the shift preventive walls are formed to be smaller than those of base portions of the seal lips. The shift preventive walls and the seal lips are disposed right under a band fastening portion.

Abstract: A boot for a constant velocity universal joint, having an inner surface that is prevented from contacting an edge portion of an outer housing of a constant velocity universal joint regardless of the bend of the boot. The boot includes a large end portion, a small end portion, and a bellows formed between the large and small end portions. The large end portion has an annular face portion facing the end face of a tip portion of the outer housing of the constant velocity universal joint, and defining a concave face portion dented to define an annular gap with the peripheral edge portion.

Abstract: A fitting type damper and a process thereof being capable of increasing largely slipping torque in strength are ones that the large slipping torque can be increased not only when the damper is a new product but also after a heat aging test and/or a durability test are performed. And, the damper is one that ?-mercaptopropyltrimethoxysilane 4, which is an organosilane used as a non-slip agent, is adhered and fitted between a hub 1 formed by some metal parts and a rubber elastic body 3, and between a inertia mass body 2 formed by some metal parts and the rubber elastic body 3.

Abstract: In a disc changer in which any one is selected from a set of disc-shaped recording media (2) stored in a disc compartment (3) and signals are written and/or read to and/or from the selected disc-shaped recording medium (2), resin layers (192), (194) and (195), softer than the disc-shaped recording medium (2) in a recording and/or playback apparatus (6) are formed on a pair of disc holding members (89) holding the selected disc-shaped recording medium (2) rotatably while chucking the latter and a disc tray (193) on which each of the disc-shaped recording media stored in the disc compartment (3) is placed. The resin layers assure to prevent the disc-shaped recording medium (2) from being damaged due to contact with the disc holding members (89) and disc tray (193).

Abstract: A piston seal of a disc brake can stabilize the amount of rollback of a piston by reducing thermal expansion and a decrease in modulus of elasticity of the piston seal caused by an increase in temperature, thereby preventing a driver from feeling that the brake operation is unnatural. The piston seal is formed of a rubber composition in which at least 100 parts by weight or more of carbon black is added to 100 parts by weight of ethylene propylene rubber.

Abstract: A piston seal of a disc brake can stabilize the amount of rollback of a piston by reducing thermal expansion and a decrease in modulus of elasticity of the piston seal caused by an increase in temperature, thereby preventing a driver from feeling that the brake operation is unnatural. The piston seal is formed of a rubber composition in which at least 100 parts by weight or more of carbon black is added to 100 parts by weight of ethylene propylene rubber.

Abstract: There are disclosed a method and a reaction apparatus which can safely and continuously treat/discharge especially a short object to be treated without any direct contact with a gas atmosphere, and which surely/efficiently treats the object with a gas without any uneven treatment. A short object A to be treated is put in a hermetically sealed cylindrical treatment section 1. In the treatment section 1, the object is held in a predetermined position by a first operation piece 11 to be treated with a gas for a predetermined time. Then, the holding by the first operation piece is released to move the object A by a desired distance. Subsequently, the object is held in a predetermined position by a second operation piece 12 to be treated again with the gas for a predetermined time, and then a treated object A1 is discharged. This discharged treated object A1 is conveyed to the outside of the apparatus.

Abstract: An isolation damper pulley comprises a damper section 1 and an isolation pulley section 2 assembled thereto, wherein a first fitting portion 18 constituted from a cylindrical portion concentric with a center axis O of a through hole 13 is provided to a hub 10 of the damper unit 1. The isolation pulley section 2 has a supporting member 22 fixed to a pulley portion 21 via an annular elastic member 23, wherein a second fitting portion 27 concentric with the first fitting portion 18 is provided to the supporting member 22. A third fitting portion 32 concentric with the first fitting portion 18 is provided to a pressing member 31 applying a precompression to the annular elastic member 23 in cooperation with the supporting member 22. The second fitting portion 27 and the third fitting portion 32 are fitted to each other and these fitting portions are fitted to the first fitting portion 18, so that the isolation pulley section 2 is assembled to the damper section 1.

Abstract: A fitting type damper and a process thereof being capable of increasing largely slipping torque in strength are ones that the large slipping torque can be increased not only when the damper is a new product but also after a heat aging test and/or a durability test are performed. And, the damper is one that ?-mercaptopropyltrimethoxysilane 4, which is an organosilane used as a non-slip agent, is adhered and fitted between a hub 1 formed by some metal parts and a rubber elastic body 3, and between a inertia mass body 2 formed by some metal parts and the rubber elastic body 3.

Abstract: A fitting type damper and a process thereof being capable of increasing largely slipping torque in strength are ones that the large slipping torque can be increased not only when the damper is a new product but also after a heat aging test and/or a durability test are performed. And, the damper is one that ?-mercaptopropyltrimethoxysilane 4, which is an organosilane used as a non-slip agent, is adhered and fitted between a hub 1 formed by some metal parts and a rubber elastic body 3, and between a inertia mass body 2 formed by some metal parts and the rubber elastic body 3.

Abstract: An in-vehicle player which is mounted in a dashboard in a passenger room of a vehicle comprises: an outer housing to be assembled in a mount space provided in the dashboard; a device body contained in the outer housing; and a cushion member interposed between the outer housing and two side surfaces of the device body, wherein the cushion member is made of viscous elastic material, the cushion member has an end surface which is substantially parallel to a shearing direction thereof and stuck to a mount surface of the device body by viscosity thereof, and the cushion member has another end surface which is substantially parallel to the shearing direction and stuck to a mount surface of the outer housing by viscosity thereof, thereby to attach the cushion member to be elastically deformable in the shearing direction between the outer housing and the two side surfaces of the device body.