Patent ID: 7063464

Claim:
A reciprocating piston mechanism for an air-conditioning compressor in a motor vehicle, comprising a housing, a rotary driven shaft, a shaft seal assembly including a gliding ring seal, at least one radial shaft bearing, at least one axial shaft bearing, and a bearing sleeve connected to the housing and extending into an interior space of said housing, wherein at least the radial shaft bearing is seated in said bearing sleeve, wherein the bearing sleeve has a first end portion holding the radial shaft bearing and a second, opposite end portion, wherein said second end portion has a smaller diameter than the first end portion and said second end portion passes through a collar-shaped opening in the housing, and wherein the second end portion extends further beyond the collar-shaped opening and enters into a ring-shaped bearing mount for a drive pulley assembly, wherein the ring-shaped bearing mount is a separate component relative to the housing.