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:
Dec. 27, 1977
Filed:
Oct. 01, 1976
Dennis A Black, Dayton, OH (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A compact variable capacity radial refrigerant compressor suitable for use in automotive refrigeration systems includes cast cylinder housing having cross bores and intake and discharge chambers formed therein which communicate with a central suction cavity. One end of the compressor housing has a modulator port surface coaxial with the unit axis while each cylinder side wall has port means therethrough for conveying gas from the cylinder compression chamber to the suction cavity with the port means having their exits located in the modulator surface. A variable capacity modulator plate is movably mounted in the recess for selectively opening and closing the port means by the rotary adjustment of the ring relative to the port means, thereby regulating suction bypass through the port means to selectively control the compressor capacity to match demand to maximize pumping efficiency and minimize horsepower requirements.