Michael A Greene

US Patent:

53663608, Nov 22, 1994

Filed:

Nov 12, 1993

Appl. No.:

8/150311

Inventors:

Mark J. Bookbinder - Detroit MI
Michael E. Greene - Kettering OH
Dwayne L. Johnson - La Crescent MN
Christopher M. Bellinger - Lockport NY
Susan C. Vasko - Lockport NY

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F04C 1804

US Classification:

418 555

Abstract:

A scroll compressor for compressing a recirculated flow of a refrigerant fluid comprises a two-piece housing having a fixed scroll securely mounted therein. An orbital scroll is disposed in the housing and matingly operatively engages the fixed scroll. A rotatable drive shaft extends through the forward end of the housing and includes a radially offset, or eccentric, drive pin. A bushing is disposed on the drive pin and retained by a roller bearing centrally on the forward face of the orbital scroll. A counterweight is secured to the bushing. An axial limit pin extends integrally with the drive shaft and is fixed relative to the drive pin. The limit pin extends through an enlarged opening in the counterweight and abuts the forward face of the bushing. A C-type clip is seated in a groove on the distal end of the drive pin for axially retaining the bushing in place on the drive pin.