Patent ID: 6273221
Filing Date: 2001-08-14
Classification: F16D,H02K

Abstract:
Rotational control apparatus comprising, in combination: an input; an output, with the input being rotatable relative to the output about an axis, with the input including an annular interface surface extending at a first nonparallel angle to the axis and extending inwardly toward the axis, with the output having an annular friction surface extending at a second nonparallel angle to the axis extending outwardly from the axis; an annular friction facing of a wedge shape including a first surface for interfacing with the interface surface and a second surface for interfacing with the friction surface; and means for moving the friction facing between an engaged position and a disengaged position, with the first and second surfaces of the friction facing engaging the interface surface and the friction surface to rotatably relate the input, the output, and the friction facing in the engaged position and with the input and output being rotatably independent in the disengaged position.