Abstract: Disclosed is a wet friction member for use in a wet clutch or a wet brake that has improved heat conductivity and tends not to damage a mating plate which is engaged with it to improve the endurance of the mating plate. The wet friction member 1 includes base paper formed from a fiber base material and a filler and a binder for curing the base paper. The base paper contains a carbon-based material and does not contain diatomaceous earth.

Abstract: A friction plate has a plurality of friction material segments circularly fixed on an annular core plate, wherein each of the friction material segments includes an oil groove having an opening that opens in the direction of an outer circumferential edge of the friction plate and an end portion that ends between an inner circumferential edge and the outer circumferential edge, oil passages in communication in the direction of the inner and the outer circumferential edges of the friction plate are provided among the friction material segments, and at least some of the oil passages have a first shape, the width of which in a circumferential direction decreases from the inner circumferential edge of the friction plate toward the outer circumferential edge thereof.

Abstract: The present invention provides a friction plate that takes more air into a lubricating oil on a friction surface so as to reduce the shear resistance force of the lubricating oil interposed between friction materials, thereby achieving significantly reduced drag torque at the time of idling, as compared with a conventional friction plate, and a wet-type multiple-disc clutch provided with the friction plate.

Abstract: The present invention provides a lock-up clutch mechanism for a torque converter, comprising a lock-up piston and a front cover having an engagement surface capable of being engaged with the lock-up piston and in which a friction material is stuck to wither one of the lock-up piston and the front cover and in which engagement and disengagement are performed in accordance with a hydraulic pressure difference between the front cover and the lock-up piston and wherein the friction material includes a first flat friction surface disposed at an outer diameter side and a second tapered friction surface disposed at an inner diameter side and further wherein, when the lock-up piston and the front cover are slip-controlled, the first friction surface is engaged with uniform face pressure, and, when the lock-up piston and the front cover are substantially integrally joined with a great hydraulic pressure difference under slip control, maximum face pressure is generated at a border between the first friction surface and

Abstract: The present invention provides a lock-up clutch mechanism for a torque converter, comprising a lock-up piston and a front cover opposed to the lock-up piston and wherein a friction material having a friction surface is secured to one of the lock-up piston and the front cover, and the friction surface includes an outer peripheral friction surface which is engaged at an initial stage of engagement between the lock-up piston and the front cover and an inner peripheral friction surface which is engaged upon tightening, and the outer peripheral friction surface has a taper with respect to the inner peripheral friction surface, and the inner peripheral friction surface and the outer peripheral friction surface are subjected to a cutting operation.

Abstract: The present invention provides a lock-up clutch mechanism for a torque converter, comprising a lock-up clutch to which a friction material having a friction surface is secured and a front cover having an engagement surface with which the friction surface is engaged when the friction surface is urged in an axial direction and in which the friction surface of the friction material has a configuration including a protruded area protruding in the axial direction.

Abstract: A lock-up mechanism for a torque converter comprising a lock-up clutch secured thereto with a friction liner having a friction surface, and a front cover having an engaging surface adapted to be engaged with the friction surface, is wherein either the friction surface or the engaging surface is formed therein with a substantially annular circumferential groove.

Abstract: The present invention provides a lock-up clutch mechanism for a torque converter, comprising a lock-up piston and a front cover having an engagement surface capable of being engaged with the lock-up piston and in which a friction material is stuck to wither one of the lock-up piston and the front cover and in which engagement and disengagement are performed in accordance with a hydraulic pressure difference between the front cover and the lock-up piston and wherein the friction material includes a first flat friction surface disposed at an outer diameter side and a second tapered friction surface disposed at an inner diameter side and further wherein, when the lock-up piston and the front cover are slip-controlled, the first friction surface is engaged with uniform face pressure, and, when the lock-up piston and the front cover are substantially integrally joined with a great hydraulic pressure difference under slip control, maximum face pressure is generated at a border between the first friction surface and

Abstract: The present invention provides a lock-up clutch mechanism for a torque converter, comprising a lock-up piston and a front cover having an engagement surface capable of being engaged with the lock-up piston and wherein one of the lock-up piston and the front cover is provided with a friction material sticking surface to which a friction material is stuck and the friction material sticking surface has a raised configuration protruding in an axial direction.

Abstract: In a double-wrap band brake assembly, an intermediate band is provided with a first friction material forming a first friction surface from a portion of the intermediate band near an apply bracket to a predetermined intermediate portion thereof, the first friction surface working for forming a lubricant film. The intermediate band is further provided with a second friction material having a thickness that is larger than a thickness of the first friction material and forming a second friction surface from the predetermined intermediate portion to a vicinity of a coupling portion of the intermediate band with a pair of outer bands, the second friction surface working for removing the lubricant film.

Abstract: The present invention provides a lock-up clutch mechanism for a torque converter, comprising a lock-up piston and a front cover opposed to the lock-up piston and wherein a friction material having a friction surface is secured to one of the lock-up piston and the front cover, and the friction surface includes an outer peripheral friction surface which is engaged at an initial stage of engagement between the lock-up piston and the front cover and an inner peripheral friction surface which is engaged upon tightening, and the outer peripheral friction surface has a taper with respect to the inner peripheral friction surface, and the inner peripheral friction surface and the outer peripheral friction surface are subjected to a cutting operation.

Abstract: A double-wrap band brake assembly to be used for braking a rotating member fitted in a double-wrap brake band, which double-wrap brake band comprises an annular middle band with a friction surface formed on the inner periphery thereof, a pair of annular outer bands which are coupled to the middle band in a state that the respective free ends thereof are opposed to the free end of the middle band, and which respectively have friction surfaces on the inner peripheries, an anchor bracket secured to the working end of either one of the middle band and the outer bands and latched to the main body casing, and an apply bracket secured to the working end of the other of the middle band and the outer bands for receiving a force in the direction of constriction of the middle band and the outer bands from an actuator.

Abstract: The present invention provides a lock-up clutch mechanism for a torque converter, comprising a lock-up clutch to which a friction material having a friction surface is secured and a front cover having an engagement surface with which the friction surface is engaged when the friction surface is urged in an axial direction and in which the friction surface of the friction material has a configuration including a protruded area protruding in the axial direction.

Abstract: A lock-up mechanism for a torque converter comprising a lock-up clutch secured thereto with a friction liner having a friction surface, and a front cover having an engaging surface adapted to be engaged with the friction surface, is wherein either the friction surface or the engaging surface is formed therein with a substantially annular circumferential groove.

Abstract: A double wrap brake band is provided for use with a rotating element such as a rotating drum in an automatic transmission or the like. The double wrap brake band is provided with a friction surface on an inner circumferential surface of a band portion wrapped substantially double. The friction surface is provided with an inclined part such that the friction surface becomes gradually closer to an associated outer circumferential surface of the rotating element in a rotating direction of the rotating element.

Abstract: A double-wrap band brake assembly to be used for braking a rotating member fitted in a double-wrap brake band, which double-wrap brake band comprises an annular middle band with a friction surface formed on the inner periphery thereof, a pair of annular outer bands which are coupled to the middle band in a state that the respective free ends thereof are opposed to the free end of the middle band, and which respectively have friction surfaces on the inner peripheries, an anchor bracket secured to the working end of either one of the middle band and the outer bands and latched to the main body casing, and an apply bracket secured to the working end of the other of the middle band and the outer bands for receiving a force in the direction of constriction of the middle band and the outer bands from an actuator.

Abstract: A double wrap brake band is provided for use with a rotating element such as a rotating drum in an automatic transmission or the like. The double wrap brake band is provided with a friction surface on an inner circumferential surface of a band portion wrapped substantially double. The friction surface is provided with an inclined part such that the friction surface becomes gradually closer to an associated outer circumferential surface of the rotating element in a rotating direction of the rotating element.