Patent ID: 6675939
Filing Date: 2004-01-13
Classification: B66D,F16D,H02K

Abstract:
A brake assembly for stopping an elongated drive shaft of a motor, comprising:a brake housing having friction material; a disc assembly adapted and configured to be contained substantially within the housing, the disc assembly having a cavity for engaging the elongated drive shaft, when the brake assembly is in an engaged state, the disc assembly creates a housing frictional link with the friction material of the brake housing; a release plate assembly having friction material, the disc assembly being intermediate the release plate assembly and the brake housing, when the brake assembly is in the engaged state, the friction material of the release plate assembly creates a release plate frictional link directly with the disc assembly; a fixed field assembly adjacent the release plate assembly, the fixed field assembly having a coil assembly for creating a magnetic field to attract the release plate assembly to a front face thereof when the brake assembly is in a disengaged state, the fixed field assembly having a plurality of biasing members to exert a force against the release plate assembly to create the housing and release plate frictional links, the fixed field assembly defining a central opening and at least one first locking hole in a rear face; and an adjustment cap having a plate defining at least one second locking hole, the adjustment cap having an upstanding cylinder coupled to the plate for engaging the central opening such that when the adjustment cap is coupled to the fixed field assembly, the plate retains the plurality of biasing members and a variation of an insertion depth of the upstanding cylinder into the central opening selectively varies a compression of the plurality of the biasing members, and a fastener engages the at least one first and second locking holes to selectively lock a position of the adjustment cap to, in turn, set the compression of the plurality of biasing members.