192 clutches and power-stop control – Clutches – Operators
Patent
1985-09-16
1987-05-05
Bonck, Rodney H.
192 clutches and power-stop control
Clutches
Operators
192 90, 74711, F16D 2900, F16D 4325, F16H 1455
Patent
active
046624996
ABSTRACT:
A control clutch mechanism embodying a first aspect of the invention has an inner clutch part and an outer clutch part defining an annular space therebetween, with a viscous control unit and a frictional clutch unit being provided which consist of two sets of plates arranged in the annular space, each set of plates including plates alternately nonrotatively connected with one of the clutch parts, respectively. An axially movable annular piston is slidingly arranged in fluid-tight engagement between the viscous control unit and the frictional clutch unit and a pressure plate is located between the annular piston and the frictional clutch unit. A first stop is provided for the annular piston and a first spring acts between the piston and the pressure plate. The viscous control unit is structured to transmit a negligibly low nominal torque as compared with the frictional clutch unit and, in accordance with a second aspect of the invention, the frictional clutch unit is provided with an annular flange which is moved by operation of an electromagnet against a second spring and against a second stop so as to relieve the pressure on the first spring, thereby bringing the control clutch mechanism into a freewheeling state by energization of the electromagnet.
REFERENCES:
patent: 2965207 (1960-12-01), Snyder
patent: 3224540 (1965-12-01), Straub
patent: 3285379 (1966-11-01), Helquist
patent: 3923113 (1975-12-01), Pagdin
patent: 4022084 (1977-05-01), Pagdin et al.
patent: 4031780 (1977-06-01), Dolan et al.
patent: 4040271 (1977-08-01), Rolt et al.
patent: 4048872 (1977-09-01), Webb
patent: 4058027 (1977-11-01), Webb
patent: 4090597 (1978-05-01), Folomin et al.
patent: 4096712 (1978-06-01), Webb
Bonck Rodney H.
Lorence Richard M.
Uni-Cardan Aktiengesellschaft
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