Abstract: A booster mounted on a supporting panel by a cam and lock arrangement has an inverse arc securing tab and arm mechanism which prevents further rotation in either direction from the installed position.

Abstract: A bayonet mounted brake booster assembly has a separate mounting arm which is snapped and retained in position shortly before installation of the booster assembly in the vehicle.

Abstract: A clamping bracket arrangement is provided which tightly grips the mounting boss of a wheel cylinder and the axle housing to which the brake assembly of which the wheel cylinder is a part is mounted, preventing movement of the wheel cylinder relative to the axle housing. The bracket arrangement may be quickly and easily installed in field service without the need for removing any parts of the brake assembly.

Abstract: A selectively engageable friction clutch is disposed in parallel drive relation with a torque converter. The friction clutch has a viscous drive portion which, during clutch engagement, permits relative rotation between the clutch input and output members so that the engine torsional vibrations are effectively dampened. The viscous drive portion has a plurality of hollow cylindrical hubs disposed in interdigital relation on respective input and output members. The cylindrical hubs on one of the input or output members has helical grooves formed on the cylindrical surfaces thereof so that the viscous fluid, preferably a silicone fluid, is pressurized between adjacent cylindrical surfaces to increase the efficiency of the viscous drive portion.

Abstract: A torque transmitting mechanism has an elastomeric drive mechanism in series with a friction drive mechanism. The elastomeric drive mechanism permits angular excursion between the frictional drive input and the drive mechanism output. To provide this relative motion, an elastomeric belt circumscribes a plurality of cam members which are formed on respective gear members. The gear members are rotatably mounted on the friction drive mechanism and mesh with a gear spline formed in the output member of the drive mechanism. When the torque transmission level is increased, the gears rotate so that the cam members also rotate resulting in an increase in the length of the elastomeric belt thereby increasing the tension therein while permitting the angular excursion between the input and output and simultaneously damping transient torsional vibration.

Abstract: A torque converter clutch and vibration damper has a selectively engageable pressure plate with an internally toothed gear secured thereto. A plurality of pinion gear members are rotatably mounted on an output hub and mesh with the internally toothed gear. Each pinion gear has one end of a link member pivotally mounted thereon. The other end of each link member is connected to a pin which is guided in a radial slot and operatively connected with an elastomeric belt member. Relative angular excursion between the pressure plate and the output hub, caused by torque transmission, results in relative motion between the meshing gears so that the pin connected to each link member is moved radially outward in the slots formed in the output hub. The pin movement causes a change in the length of the elastomeric belt operatively connected therewith so that a change in the torque capacity of the vibration damper occurs.

Abstract: An annular friction disc has a flat friction surface on each side of a flat steel plate with each friction surface having a plurality of radially extending grooves formed therein. Each groove has a flat bottom portion which extends between the inner and outer circumference of the friction surface and is displaced axially from the friction surface at the inner circumference and is contiguous with the friction surface at the outer circumference. Each groove also has a pair of tapered side walls extending between the bottom portion and the adjacent flat friction surface.

Abstract: A torsional vibration damper for a torque converter clutch has a plurality of elastomeric members disposed in drive relation between a clutch input member and a clutch output member. One end of the elastomeric members is pivotally connected to the clutch input and the other end of the elastomeric members is operatively connected to the output member through a cam surface. The elastomeric members, while transmitting torque, permit relative angular motion between the input and output members of the clutch to reduce the torsional vibrations imposed on the input member by an internal combustion engine.

Abstract: A vibration damper for a torque converter clutch has elastomeric bands disposed to transmit torque between the clutch input member and the clutch output member while simultaneously permitting relative angular movement between the members to reduce the torsional vibration imposed on the input member. The elastomeric bands are connected to a clutch pressure plate and a gear member which is rotatably mounted on the pressure plate and meshes with a gear drivingly formed on the output member. The input member and output member undergo angular excursions relative to each other during torque transmission such that the gear member rotatably mounted on the pressure plate rotates due to its meshing engagement to increase the stress in the elastomeric band to a value commensurate with the torque transmitting level of the clutch. The torque input to the clutch is thus transmitted through the elastomeric band and the meshing gears to the clutch output member.