192 clutches and power-stop control – Clutches – Automatic
Patent
1996-02-21
1997-11-25
Bonck, Rodney H.
192 clutches and power-stop control
Clutches
Automatic
180249, 192 57, 192 5842, 192103FA, F16D 43284, B60K 2302, B60K 2304
Patent
active
056902018
ABSTRACT:
A coupling for transmitting torque between two parts (14, 20; 16, 24) which are rotatable relative to one another, comprising a friction coupling (12) whose friction elements (15, 17) are each non-rotatably connected to the one and the other of the parts (14, 20; 16, 24) which are rotatable relative to one another, with the friction coupling (12) being loadable by at least one movable piston (19) which, at one end, delimits a pressure chamber (21) which is filled with a viscous fluid, which is connected to a reservoir (26), whose rotational housing (20) is formed by the one of the rotatable parts (14, 20) and by the piston (19) sealed relative thereto and in which there rotates a rotational member (22) connected to the other one of the rotatable parts (16, 24), with rotational faces of the rotational member (22), together with counter faces of a pumping and control member (23) positioned in the pressure chamber (21) constituting at least one sealed shear channel (38) which, in the respective direction of relative rotation, communicates with the reservoir (26) at the front end and which, in the respective direction of relative rotation communicates with the pressure chamber (21) at the rear end, and with a bypass pipeline (91) being provided so as to extend parallel to the shear channel for connecting the pressure chamber (21) with the reservoir (26), in which pipeline there is arranged a pressure relief valve (92) which opens from the pressure chamber (21) to the reservoir (26) and which serves to limit the pressure in the pressure chamber.
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Bonck Rodney H.
GKN Viscodrive GmbH
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