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. 11, 2012
Filed:
Jan. 22, 2009
Tracy L. Milliff, Arkadelphia, AR (US);
Zili Sun, Arkadelphia, AR (US);
Tapesh P. Patel, Hotsprings, AR (US);
Jacob Munich, Saddlebrooke, AZ (US);
Joe T. Hill, Arkadelphia, AR (US);
Gene Fields, Arkadelphia, AR (US);
Tracy L. Milliff, Arkadelphia, AR (US);
Zili Sun, Arkadelphia, AR (US);
Tapesh P. Patel, Hotsprings, AR (US);
Jacob Munich, Saddlebrooke, AZ (US);
Joe T. Hill, Arkadelphia, AR (US);
Gene Fields, Arkadelphia, AR (US);
Danfoss Scroll Technologies, LLC, Arkadelphia, AR (US);
Abstract
A scroll compressor comprises a first scroll member having a generally spiral wrap and a second scroll member having a generally spiral wrap. The generally spiral wraps interfit to define compression chambers. A pair of ports leads from the compression chambers. A pair of valves selectively blocks flow of refrigerant from the ports leaving the compression chambers. The valves selectively control the flow such that flow may pass from neither of the two ports, from both of the two ports, or from only one of the two ports to provide three levels of capacity control.