Abstract: A damper disc comprises an output member, a pair of input members located at both side thereof, an intermediate member between each input member and output member, and spring mechanisms for coupling the output member and input member. The input member contains a first edge portion to be engaged with a first end portion of the spring mechanism in a first rotating direction, a spring holding portion, and a second edge portion to be engaged with a second end portion of the spring mechanism; the intermediate member contains a second edge portion to be engaged with the second end portion of the spring mechanism, a spring holding portion, a second engaging portion to be engaged with the input member, and a first engaging portion to be engaged with the output member; and the output member contains a first edge portion to be engaged with the first end portion of the spring mechanism.

Abstract: A torque converter device having an impeller linked to the outer circumference of the front cover, a turbine located between the front cover and the impeller, a directly coupled clutch, for engagement with an inner surface of the front cover through a friction linkage, position between the outer circumferential part of the turbine and the outer circumferential part of the front cover, an output clutch disposed between the inner circumferential part of the turbine and the inner circumferential part of the front cover and in a space filled with working fluid radially inside the directly coupled clutch, the output clutch being composed of multidisc friction clutch, the output unit of the directly coupled clutch and the output unit of the turbine being linked to the input unit of the output clutch, and the output unit of the output clutch being linked to an output shaft.

Abstract: A hydrodynamic retarder suitable for use as a supplementary brake on trucks consists of a rotor wheel 20 fixed to an output shaft and a stator wheel 21. Movable blades 24 are attached to edges of blades 30 of the stator wheel 21 facing toward the rotor wheel 20. The movable blades 24 are biased by spring members to prevent air flowing into the stator wheel 21, but allow working oil to flow into the stator wheel 21. The movable blades 24 and spring members are provided internally of a torus defined by the stator wheel and provide an efficient hydrodynamic retarder of reduced weight and cost.

Abstract: In a stepless speed-change power transmission for vehicle having an acceleration clutch comprising a fluid coupling, a forward/backward change-over mechanism coupled to a rear stage of the acceleration clutch, and a stepless speed changer coupled to a rear stage of the forward/backward change-over mechanism; a centrifugal lock-up clutch for the stepless speed-change power transmission for vehicle characterized by that an approximately disc-like output hub is connected to a turbine hub coupled to a turbine wheel of a fluid coupling fixed to an output shaft of said acceleration clutch, two side plates are so provided as to sandwich both side faces of the output hub, a damper mechanism is interposed between the side plate and the output hub, and a clutch shoe is provided at an outer peripheral portion of the side plate, which is movable in a radial direction of the side plate by means of a centrifugal force and can be freely engaged with or disengaged from an input member inputting a power from an engine.

Abstract: A lockup damper, in which an approximately disc-like piston (28) having a convex portion current toward a front cover (12) is provided freely slidingly in its axial direction. A retaining plate (38) and a side plate (40) for holding coil springs (36) are provided on the piston (28). Spring seats (44) and (50) compressing the coil springs (36) are formed on the retaining plate (38) and the side plate (40). A power transmitting driven plate (30) having axially projecting claws extending in between the coil springs (36) is provided. Therefore the lockup damper is simple in its construction, light in its weight, cheap in its manufacturing cost, and is suitable for a torque converter having the convex type front cover (12).

Abstract: A damper disk for a lock-up clutch disposed in a torque converter includes a clutch plate as an input member, damper springs for elastically connecting the clutch plate to a turbine of a torque converter and a drive plate. The drive plate is made of sheet metal and is fixed to the clutch plate. The drive plate includes rims and support walls for holding the damper springs, as well as, radially outer projections and inner projected walls engaging the springs. Claws rigidly connected to the turbine are disposed between the projections and projected walls. The rims includes stoppers at the ends thereof which are radially inwardly inclined for preventing axial movement of the damper springs.

Abstract: A stepless speed-change power transmission for vehicle having a fluid coupling, a forward/backward change-over mechanism coupled to a rear stage of the fluid coupling, and a stepless speed changer coupled to a rear stage of the forward/backward change-over mechanism; characterized by that a clutch element, which selectively couples a drive plate with a pump wheel only when a vehicle is operated to drive, is installed between the drive plate transmitting a power from an engine to the fluid coupling and the pump wheel of the fluid coupling; a turbine wheel facing the pump wheel is interconnected through a turbine hub to an output shaft; and the power is transmitted from this output shaft to the forward/backward change-over mechanism.

Abstract: A stepless speed-change power transmission for vehicle having a fluid coupling, a forward/backward change-over mechanism coupled to a rear stage of the fluid coupling, and a stepless speed changer coupled to a rear stage of the forward/backward change-over mechanism; characterized by that a clutch element, which selectively couples a drive plate with a pump wheel only when a vehicle is operated to drive, is installed between the drive plate transmitting a power from an engine to the fluid coupling and the pump wheel of the fluid coupling; a turbine wheel facing on the pump wheel is interconnected through a turbine hub to an output shaft; and the power is transmitted from this output shaft to the forward/backward change-over mechanism.

Abstract: A stepless speed-change power transmission for a vehicle having a fluid coupling, a forward/backward change-over mechanism coupled to a rear stage of the fluid coupling and a stepless speed changer coupled to a rear stage of the forward/backward change-over mechanism. The fluid coupling has a clutch for selectively coupling an engine driven drive plate with the pump wheel of the fluid coupling, when a vehicle is operated to drive, between the drive plate transmitting power from the engine to the fluid coupling. A turbine wheel facing the pump wheel is interconnected through a turbine hub to an output shaft for transmitting power to the forward/backward change-over mechanism.

Abstract: The present invention discloses a damper disc of a thin type comprising a central hub provided with a hub flange, two side plates coaxially disposed at both sides of the hub flange, and torsion springs engaged in openings provided respectively in the hub flange and the side plates to circumferentially elastically connect the hub flange and the side plates together, characterized in that the hub flange is provided with openings, in which both side plates are closely fixed together with circumferential spaces between the openings and the closely fixed portions of the side plates.

Abstract: A damper assembly for a clutch has an annular cover assembly including a pair of first covers adapted to be connected to a torque input part and a pair of second covers; an annular first hub connected to the second cover; an annular second hub adapted to be connected to a torque output part; a wake first torsion spring mechanism connecting the first covers to the first hub; a strong second spring mechanism connecting the second covers to the second hub; and a stopper mechanism for preventing relative torsion between the first covers and the first hub when a torsion angle between the first covers and the first hub increases to predetermined values at positive and negative rotating directions; the stopper mechanism is so designed that the predetermined values of the torsion angle in the positive rotating direction and the negative rotating direction may be different from each other; and the second torsion spring mechanism includes a plurality of springs arranged in series with floting spacers therebetween.

Abstract: The present invention discloses a lock-up clutch of a torque converter comprising a disc hub adapted to be connected slidably only in an axial direction to a turbine hub of a torque converter and having a radial flange, a pair of annular side plates disposed at both sides of the hub flange, plural torsion springs disposed in openings and hollows in the hub flange and the side plates for connecting the side plates to the hub flange, each or each set of the springs being adapted to engage at both ends thereof with the side plates and the hub flange, a friction portion provided on a radially outer portion of the side plate and adapted to be axially pressed to an inner surface of a front cover of the torque converter, and a forcing means for forcing and pressing the friction portion to the front cover.

Abstract: A vibration damper assembly, in which side plates are fitted onto an outer peripherary of a hub freely rotatably, a sun gear is formed on an outer peripheral surface of the hub, a flange plate is disposed outwardly from the sun gear with a space left therebetween, a ring gear facing at the sun gear is formed on an inner peripheral surface of the flange plate, a planetary gear supported by the side plates is made mesh between the sun gear and the ring gear, and the side plates and the flange plate are elastically interconnected through a torsion spring.

Abstract: The present invention discloses a lock-up clutch of a torque converter comprising a disc hub adapted to be connected slidably only in an axial direction to a turbine hub of a torque converter and having a radial flange, a pair of annular side plates disposed at both sides of the hub flange, torsion spring mechanisms disposed in openings and hollows in the hub flange and the side plates for connecting the side plates to the hub flange, each torsion spring mechanism having plural elastic members aligned in the disc circumferential direction in series with floating spacers therebetween, a friction portion provided on a radially outer portion of the side plate and adapted to be axially pressed to an inner surface of a front cover of the torque converter, and a forcing means for forcing and pressing the friction portion to the front cover.

Abstract: A vibration damper assembly, a damper cover being divided into a pair of outer peripheral first covers and a pair of inner peripheral second covers, a first hub being arranged in between said first covers at an input side and the first hub being fixed to the second covers, an output-side second hub being arranged between said second covers, the first covers and the first hub being so coupled that a torque is transmissible between them through the means of a first-stage elastic means, the second covers and the second hub being so coupled that a torque is transmissible between them through the means of a second-stage elastic means, and a friction material being arranged in both or either of between the first covers and the first hub and/or between the second covers and the second hub.

Abstract: A vibration damper assembly which includes an output hub with circumferentially spaced plural radial arms and arcuate openings between the arms; input covers disposed at both sides of the hub and having openings axially faced to the openings in the hub; plural torsion springs arranged circumferentially tandem in each set of the openings in the hub and the covers; and floating spacers arranged between the torsion springs and circumferentially slidably supported by rail portions forming outer and inner edges of the opening in the hub. The floating spacers are made of a middle slider having a pair of end plates riveted thereto over lapping the rail portions.