F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
F16H 3/10 (2006.01) F16D 41/08 (2006.01)
Patent
CA 2057051
A variable speed transmission includes parallel driver and driven shafts (54, 56) which mount respective series of inter- meshing gears (60-65. 70-75) of progressively increasing gear ratio for selectively transmitting power from one shaft to the other. A series of two-way roller clutches are interposed between the driven shaft (56) and respective gear members (70-75) of the series of driven gears. The roller clutches are engageable for rotatively coupling the driven gears (70-75) to the driven shaft (56) and are disengageable for permitting relative rotation between the driven gears and the driven shaft. Each of the roller clutches includes a cam disk (10) having a plurality of recesses (20) formed in its peripheral surface and a roller retainer (12) circumferentially sup- porting a plurality of rollers (32) within respective recesses (20) in the cam disk. A hydraulically controlled actuator is operatively connected to each of the retainers (12) for indexing the roller retainers (12) together with the plurality of rollers (32) between re- spective limit positions within the recesses. The actuating means includes an annular plate (22, 24) rotatively coupled to the roller retainer and angularly spaced vanes (44) in communication with a pair of fluid supply ducts (92, 94 and 96, 98) of a stationary hydraulic housing (80-85). One of the supply ducts (92, 94) provides for indexing the roller retainer (12) to one of the limit posi- tions, and the other of the supply ducts (96, 98) provides for indexing the roller retainer (12) to the other limit position.
Dimock Stratton Llp
Macpherson Roger
LandOfFree
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