Caster shimmy damper

Details Caster shimmy damper Caster shimmy damper

B - Operations, Transporting

60

B

267/65, 16/7

B60B 33/00 (2006.01)

Patent

CA 1168808

ABSTRACT A viscous rotary damper adapted to attenuate shimmy of a rotary member such as a caster relative to an associated member such as a wheelchair leg, comprises a pair of relatively rotatable annular portions having means for respective attachment to the members. The damper portions have annular cooperative working surfaces of substantial length defining therebetween a shear film space gap working chamber which is closed at opposite ends by dynamic seals and has a viscous damping medium substan- tially filling the working chamber gap and providing viscous shear coupling yieldably resisting relative rotary movements of the working surfaces. The damper is adapted to be in a miniaturized form comprising a stator ring and a rotor housing, the stator ring being arranged to be keyed to one of relatively rotary members and the rotor being arranged to be keyed to the other of relative- ly rotary members.

399927

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