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:
Oct. 18, 2005
Filed:
Jan. 30, 2004
Michael F. Taras, Fayetteville, NY (US);
Alexander Lifson, Manlius, NY (US);
Thomas J. Dobmeier, Phoenix, NY (US);
Michael F. Taras, Fayetteville, NY (US);
Alexander Lifson, Manlius, NY (US);
Thomas J. Dobmeier, Phoenix, NY (US);
Carrier Corporation, Syracuse, NY (US);
Abstract
A refrigerant cycle is provided with tandem compressors. Only some of the multiple compressors are provided with an economized cycle, and an optional unloader valve for selectively returning flow from an economizer injection port back to suction. The present invention thus provides the economized operation capabilities and benefits for a refrigerant cycle having tandem compressors, without the complexity of providing separate economizer arrangement for each of the compressors.