Patent ID: 7281465

Claim:
A compressor assembly comprising; a housing, a cylinder block presenting a plurality of cylinder bores and supported by said housing, a piston disposed for reciprocation in each of said cylinder bores, a plate presenting a drive surface extending transversely to said bores, a mechanism for effecting relative rotation between said cylinder block and said plate for reciprocating said pistons in said cylinder bores, each of said pistons including a spherical pocket, said mechanism including a spherical shoe in sliding engagement with said pocket, a coating between said pocket and said shoe, and characterized by said coating being a composite of solid particles of a lubricant suspended in an adhesive bonded to one of said pocket and said shoe; wherein said coating comprises particles of polytetrafluoroethylene (PTFE) suspended in an epoxy resin; wherein said cylinder is an aluminum alloy; and wherein said epoxy resin has a low cross-linking characteristic.