Abstract:
An improved two-way torque limiting coupling (10) of the type utilizing a single helical coil clutch (18) and an automatic slack adjuster utilizing same is provided. The coupling provides a driving connection between a first (12) and a second (14) rotatable adjacent members. The first member includes a bore (24) opening to an end (20) in which one end of coil clutch is received in interference fit to define an internal clutch interface (34) and the other member defines an annular outer periphery (26) about which the other end of the coil clutch is received in an interference fit to define an external clutch interface (36). For the direction of rotation tending to expand the coil clutch (18), the coupling will slip at the external interface (36) which is the low maximum torque transfer direction of rotation for that interface and for the direction of rotation tending to contract the coil clutch (18), the coupling will slip at the internal interface (34) which is the low maximum torque transfer direction of rotation for that interface.
Abstract:
An adjustment drive apparatus particularly for motor vehicles having coaxial rotatably supported driving and driven members with a helical spring which is braced against the inner circumferential surface of a hollow cylindrical element coaxial with these members operating to effect drive transmission therebetween. One of the members has a first claw or driver connection member rigidly affixed thereto, the claw member pressing against one of the ends of the helical spring to effect an extension or enlargement of the spring when relative rotation occurs between the spring and the claw member. The hollow cylindrical element within which the helical spring is located is affixed for rotation with the other of the driving and driven members. An auxiliary driving member is provided which, when activated, will cause the spring to be disengaged so that the driven member may be rotated through the auxiliary driving member.
Abstract:
A mechanism for absorbing elongation of a wire in a power transmission device comprising two coaxial pulleys, i.e., ratchet pulley and winding pulley, winding both end portions of the wire respectively in the opposite direction; a ratchet roller connecting with the ratchet pulley by means of ratchet and engaging to the winding pulley, whereby the elongation of the wire can be absorbed by winding only one end portion of the elongated wire around either the ratchet pulley or the winding pulley.
Abstract:
A stationwagon vehicle body has a tailgate movable in an arcuate path between a lowered open position and a raised closed position. The tailgate is power actuated through a bi-directional drive mechanism which allows manual closing of the tailgate but prevents its manual opening.
Abstract:
908,210. Brakes. GENERAL MOTORS CORPORATION. July 5, 1961 [July 18, 1960], No. 24272/61. Class 103 (1). [Also in Group X] A window regulator mechanism applicable to vehicle windows comprises a self-sustaining device including a cup-shaped brake drum 12, axially mounting a spindle 22 having secured thereto a drive hub 28 and an operating handle 26, a window operator key 80 secured at one end to a pinion 66 rotatable on spindle 22 and meshing with a window operating sector 68 and a helical spring 36 between the hub 28 and the drum 12 and wound on rotation of the handle 26 by contact of edges of a slot 38 in the hub 28 with one or other ends 40, 42 of the spring to disengage the spring from the drum 12 and unwound on attempted movement by the window by contact of edges of the key 80 with one or other end 40, 42 of the spring to grip the drum 12, and the spring is returned in the space between the drums by a nylon or polyethylene washer 50 at one end and at the other end by an outward flange 52 on the hub forming a bearing surface on the drum 12. Another bearing surface for the spindle 22 is formed by the inward annular flange 20 of the drum 12. An axial rib 82 on the hub forms a bearing seat for the key 80.