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:
Jul. 26, 1983
Filed:
Nov. 02, 1981
Roger J Voorhis, Liverpool, NY (US);
Carrier Corporation, Syracuse, NY (US);
Abstract
A heat pump system comprising a compressor, two heat exchangers, and an expansion device. The expansion device defines two, spaced apart flow passages. A first piston is located in a first flow passage for metering refrigerant flow therethrough at a first flow rate, and a second piston is located in the second flow passage for metering refrigerant flow therethrough at a second flow rate less than the first flow rate. The expansion device includes a valve having a first position, closing the second flow passage to direct refrigerant through the first flow passage, and a second position, closing the first flow passage to direct refrigerant through the second flow passage.