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Torque is transmitted between two rotatable, coaxial shaft members in a stationary housing which includes a number of alternate clutch discs connected to the shaft members and engageable to counteract differential rotational speed therebetween, and a hydraulic arrangement driven by the speed differe

Torque is transmitted between two rotatable, coaxial shaft members in a stationary housing which includes a number of alternate clutch discs connected to the shaft members and engageable to counteract differential rotational speed therebetween, and a hydraulic arrangement driven by the speed differential. The arrangement includes a number of pistons which are axially movable in the housing and are intended to create a hydraulic pressure in the arrangement and thereby to engage the clutch discs, piston actuating devices engaging a shaft member via cams, so as to impart to the pistons a reciprocating movement, and a closed hydraulic system connecting cylinders at all pistons with a hydraulic line containing check-valves. Oil is supplied to the system with a pump and may be removed from the system via an overflow valve.

대표청구항 ▼

[ I claim:] [1.] A device for transmitting torque between two rotatable, coaxial shaft members (1, 2) in a stationary housing (3, 4), the device containing a number of alternate clutch discs (12, 14), connected to the two shaft members and engageable to counteract differential rotational speed betwe

[ I claim:] [1.] A device for transmitting torque between two rotatable, coaxial shaft members (1, 2) in a stationary housing (3, 4), the device containing a number of alternate clutch discs (12, 14), connected to the two shaft members and engageable to counteract differential rotational speed between the shaft members, and a hydraulic arrangement, driven by the speed differential between the two shaft members and includinga number of concentrical, ring-shaped pistons (27-30; 55-57), which are axially movable in the housing coaxially with the shaft members and are intended to create a hydraulic pressure in the arrangement and thereby to engage the clutch discs at a differential rotational speed between the shaft members,piston actuating members (18-21; 45-47) rotatable with one of the shaft members (2) and engaging the other of the shaft members (1) via cams, which are angularly offset in relation to each other, so as to impart to the pistons a reciprocating movement at a differential rotational speed between the shaft members, anda hydraulic line system connecting the cylinders at all pistons by means of hydraulic lines (31, 37, 40) containing check-valves (32, 39),characterized in that the hydraulic line system (31, 32, 37, 39, 40) is a closed system and in that oil is supplied to the system from a reservoir (33) by means of a pump (35) and may be removed from the system to the reservoir via an overflow valve (34).