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. 07, 1999
Filed:
Nov. 01, 1993
Applicant:
Inventor:
James R Harnish, York, PA (US);
Assignee:
Gas Research Institute, Chicago, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F25B / ;
U.S. Cl.
CPC ...
623234 ; 417295 ;
Abstract
A simplified combustion engine driven heat pump system having electric power co-generation capability includes a compressor unloading valve to reduce demand on the engine and optimize the efficiency of intermittent power generation during heat pump system downtime. Some benefits of electrical power generation available in more sophisticated system designs are thereby obtained with a smaller, simpler, inexpensive and reliable system.