Transmission shift mechanism with ball ramp actuated gear clutch

Details Transmission shift mechanism with ball ramp actuated gear clutch Transmission shift mechanism with ball ramp actuated gear clutch

1994-03-17

1995-07-25

Wright, Dirk

Machine element or mechanism

Gearing

Interchangeably locked

192 84C, F16D 1300

Patent

active

054352010

ABSTRACT:
A gearbox having at least two parallel rotating shafts and at least two pairs of gears each pair comprising a gear on one of the shafts permanently in mesh with a freely rotating gear on the other shaft, the rotating gear on one of the shafts being connectable to the shaft by friction gear clutch packs loadable by a ball ramp mechanism having a control ring rotatably supported on a shaft and a pressure ring nonrotatably supported on the same shaft where a coil is used to electromagnetically connect the control ring to the rotating gear which causes the ball ramp mechanism to axially expand onto the gear clutch pack. The ball ramp mechanism is actuated when there is relative rotation between the control ring and the pressure ring as rolling members travel in opposed variable depth grooves formed in the opposed faces of the control ring and the pressure ring.

REFERENCES:
patent: 2738045 (1956-03-01), Mergen et al.
patent: 2937729 (1960-05-01), Sperr, Jr.
patent: 2966975 (1961-01-01), Wiedman et al.
patent: 5078249 (1992-01-01), Botterill

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