Patent ID: 6554115
Filing Date: 2003-04-29
Classification: F16D

Abstract:
Rotational control apparatus comprising, in combination: an input having a radially extending interface disc; a first plate including an interface facing for interfacing with the interface disc; an annular housing including a first axial side and a second axial side; at least a first axially extending piston cavity formed in the first axial side; and at least a first piston slideably received in the first piston cavity with a fluid cavity being defined by the first piston and the first piston cavity with fluid pressure being introduceable into the fluid cavity to force the first piston out of the first piston cavity, with the input being rotatably mounted relative to the housing with the housing being positionable in first and second positions, with the first position of the housing permitting axial movement of the piston out of the first cavity and towards the interface disc to interface the interface disc and the interface facing and permitting axial movement of the piston into the piston cavity and away from the interface disc to allow free relative rotational movement of the interface disc and the interface facing and with the second position of the housing permitting axial movement of the piston out of the first cavity and away from the interface disc to allow free relative rotational movement of the interface disc and the interface facing and permitting axial movement of the piston into the piston cavity and towards the interface disc to interface the interface disc and the interface facing.