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:
May. 28, 2019
Filed:
Oct. 27, 2017
Applicant:
Northrop Grumman Systems Corporation, Falls Church, VA (US);
Inventor:
Michael B. Petach, Redondo Beach, CA (US);
Assignee:
NORTHROP GRUMMAN SYSTEMS CORPORATION, Falls Church, VA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F03G 7/00 (2006.01); F02G 1/043 (2006.01); H02K 7/18 (2006.01);
U.S. Cl.
CPC ...
F03G 7/002 (2013.01); F02G 1/0435 (2013.01); H02K 7/1876 (2013.01); F02G 2243/54 (2013.01); F02G 2254/90 (2013.01); F02G 2257/00 (2013.01); F02G 2280/10 (2013.01); F02G 2290/00 (2013.01);
Abstract
A multi-stage traveling wave thermoacoustic engine is disclosed. A plurality of heat engine stages are formed as a toroidal spiral cascade of N stages inside a pressure vessel. Each stage feeds into the next stage such that all of the thermoacoustic power cycles past a common set of thermal interfaces multiple times with the single domed pressure vessel. The inventive thermoacoustic engine is simpler and cheaper to manufacture and more reliable due to the minimization of hot joints.