Patent ID: 8469826
Filing Date: 2013-06-25
Classification: F16D,Y10T

Abstract:
1. A radial piston damped torsional coupling comprising: a first coupler; a second coupler oriented to rotate with respect to the first coupler about an axis through a continuum of negative, neutral and positive torque orientations; one of the first and second couplers defining a fluted perimeter surface with a number of flutes, which is at least three, distributed with radial symmetry about the axis; the other of the first and second couplers including the number of pistons reciprocally received in respective barrels to define a variable volume chamber fluidly connected to a damping passage; a spring biasing the pistons and barrels to extend toward a position where a contact end is in contact with one of the flutes; the contact end is an edge of a roller that rolls on the fluted perimeter surface in one of the flutes.