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. 25, 2007
Filed:
Feb. 06, 2004
Thomas Q. Gurski, Goffstown, NH (US);
Christopher C. Langenfeld, Nashua, NH (US);
Stanley B. Smith, Iii, Raymond, NH (US);
Thomas Q. Gurski, Goffstown, NH (US);
Christopher C. Langenfeld, Nashua, NH (US);
Stanley B. Smith, III, Raymond, NH (US);
New Power Concepts LLC, Manchester, NH (US);
Abstract
A device and method for equalizing the pressure between work-space and crankcase in a pressurized engine, such as a Stirling engine. The device consists of a two-way valve connected between the work-space and the crankcase. The valve is connected to the work-space with a passageway including a constriction to provide an mean pressure for monitoring purposes. The valve connects the work-space and crankcase allowing the pressure to equalize when the mean pressure of the work-space exceeds the crankcase pressure by a predetermined amount.