Machine element or mechanism – Gearing – Interchangeably locked
Patent
1989-05-26
1990-09-25
Diehl, Dwight
Machine element or mechanism
Gearing
Interchangeably locked
74336R, 192 44, F16H 310
Patent
active
049585339
ABSTRACT:
A variable speed transmission includes parallel drive and driven shafts which mount respective series of intermeshing gears 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 and respective gear members of the series of driven gears. The roller clutches are engageable for rotatively coupling the respective gear members to the driven shaft and are disengageable for permitting relative rotation between the respective gear members and the driven shaft. Each of the roller clutches includes a cam disk having a plurality of recesses formed in its peripheral surface and a roller retainer circumferentially supporting a plurality of rollers within respective recesses in the cam disk. A hydraulically controlled actuator is connected to each of the retainers for indexing the roller retainers together with the plurality of rollers between respective limit positions within the recesses. The actuating device includes an annular plate rotatively coupled to the roller retainer and angularly spaced vanes in communication with a pair of fluid supply ducts of a stationary hydraulic control housing. One of the supply ducts provides for indexing the roller retainer to one of the limit positions, and the other of the supply ducts provides for indexing the roller retainer to the other limit position.
REFERENCES:
patent: 1950110 (1934-03-01), Hartsock
patent: 2350627 (1944-06-01), Malachowski
patent: 2377575 (1945-06-01), Ringer
patent: 2453794 (1948-11-01), Iavelli
patent: 2641936 (1953-06-01), Walder
patent: 3889547 (1975-06-01), Sun et al.
patent: 4817451 (1989-04-01), Weismann
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