Patent ID: 7900752

Claim:
A brake, comprising: a housing disposed about a driven shaft, said driven shaft rotating about a rotational axis; a first friction plate coupled to said driven shaft for rotation therewith and axially movable relative to said driven shaft; a second friction plate coupled to said housing and fixed against rotation relative to said housing, but axially movable relative to said housing, said second friction plate defining a fluid jacket configured for passage of a fluid; a first end cap assembly disposed at a first axial end of said housing and coupled to said housing; said first end cap assembly including a first pressure plate; and, means for applying a variable control force to said first pressure plate to urge said first pressure plate in a first axial direction towards said first and second friction plates; a second end cap assembly disposed at a second axial end of said housing and coupled to said housing, said second end cap assembly including: a second pressure plate; means for applying a setting force to said second pressure plate in a second axial direction to urge said second pressure plate towards said first and second friction plates; and, means for selectively applying a release force in said first axial direction against said setting force wherein said fluid flows within and through said second friction plate.