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.

Date of Patent:
Feb. 16, 2010

Filed:

Dec. 07, 2004
Applicants:

Kenneth W. Cowans, Fullerton, CA (US);

William W. Cowans, Fullerton, CA (US);

Inventors:

Kenneth W. Cowans, Fullerton, CA (US);

William W. Cowans, Fullerton, CA (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25B 29/00 (2006.01); F28D 7/02 (2006.01); F28D 7/10 (2006.01);
U.S. Cl.
CPC ...
Abstract

A compact heat exchanger for interchanging thermal energy between at least two fluids, one of which fluids may be a refrigerant in hot or cold form or in a liquid/vapor phase, and another of which fluids is a thermal transfer fluid. The heat exchanger may incorporate an internal heating element. The thermal transfer fluid is transported between two concentric metal tubes, while the refrigerant moves along a tubing helically wrapped about or between the tubes and is in thermal contact therewith.


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