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:
Apr. 10, 1979
Filed:
Dec. 12, 1977
Joseph Gerstmann, Framingham, MA (US);
Yizhak Friedman, Newton, MA (US);
Other;
Abstract
A heat-actuated heat pump is disclosed having liquid pistons which displace the working gas and transmit power between expanding gas and compressing gas. Power output from expanding sections is transmitted to compressing sections without intervening mechanical shafts or levers, and the phasing of the various pistons is self-regulated, thereby eliminating the need for phase control mechanisms, such as crankshafts. The engine and heat pump operate in a thermally regenerated cycle without valves, closely approximating a Stirling cycle.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile