The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 1992
Filed:
Apr. 15, 1991
Edward D Pettitt, Burt, NY (US);
Robert L Swadner, East Amherst, NY (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A refrigerant compressor assembly includes a shaft rotatably supported in a housing. A swash plate in disposed on the shaft, centrally within the housing. Three double-ended pistons are reciprocally supported on the swash plate within respective front and rear compression chambers for creating alternating compression and suction strokes in response to rotation of the swash plate. Refrigerant fluid discharged from the three front compression chambers is directed to a front discharge cavity and from the three rear compression chambers to a rear discharge cavity. The discharged fluid from the respective front and rear discharge cavities are each divided and then routed through equally restrictive flow passages to a primary and secondary mixing chamber. A first exhaust channel extends from the primary mixing chamber to an exhaust port of the compressor. A second exhaust channel extends from the secondary mixing chamber to the exit port and conveys the discharged fluid along a path having a greater restriction to fluid flow than the first exhaust channel. The discharged fluid flows from the first and second exhaust channels merge at or just upstream of the exit port.