Abstract: An apparatus provides air cooling for a scroll compressor having a fixed scroll and an orbiting scroll. A plurality of fins are fixedly attached on a back surface portion of the fixed scroll. A cover assembly is disposed on the fins of the fixed scroll. The cover assembly and the fins of the fixed scroll form air passageways between the plurality of fins. A plurality of arcuately shaped fins are fixedly attached on a back surface portion of the orbiting scroll. A cover assembly is disposed on the fins of the orbiting scroll. The cover assembly and the fins of the orbiting scroll form air passageways between the plurality of fins. A shroud assembly surrounds the fixed and orbiting scrolls. The shroud assembly defines an interior portion around the fixed and orbiting scrolls, an intake aperture and a plurality of exhaust apertures. The shroud assembly has an exterior surface portion having a plurality of involutes formed thereon.

Abstract: A parallel adjustment assembly is provided for a scroll compressor which includes an orbiting scroll and a fixed scroll. The parallel adjustment assembly includes a housing and an eccentric guide shaft having opposed first and second ends. A step is defined by the eccentric guide shaft at an intermediate position along the shaft. A first bearing is fixedly mounted on the housing. The first bearing rotatably mounts the first end of the eccentric guide shaft. The eccentric guide shaft is moveable axially with respect to the first bearing. A biasing member biases the eccentric guide shaft in a direction toward the fixed scroll. A positioner, which is made integral with the eccentric guide shaft, precisely positions the eccentric guide shaft in the thrust direction.

Abstract: A bearing for orbital motion includes a first plate having first and second surfaces. The second surface has formed thereon a race and a reservoir which circumscribes the race. A second plate has first and second surfaces. The first surface of the second plate has formed thereon a race and a reservoir which are matingly dimensioned and oriented with respect to the race and reservoir of the first plate. The second surface of the second plate has formed thereon a race, which is oriented perpendicular to the race of the first surface, and a reservoir, which circumscribes the race. A third plate has first and second surfaces, and the first surface has formed thereon a race and a reservoir which are matingly dimensioned and oriented with respect to the race and reservoir of the second surface of the second plate. A first pair of load carrying members are disposed in the mating races of the first and the second plates.