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:
Mar. 18, 2003
Filed:
Nov. 01, 2000
Applicant:
Inventors:
Stephen E. Vargo, Pasadena, CA (US);
E. Phillip Muntz, Pasadena, CA (US);
Geoff R. Shiflett, Culver City, CA (US);
Assignee:
University of Southern California, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 1/924 ; F04F 1/18 ;
U.S. Cl.
CPC ...
F04B 1/924 ; F04F 1/18 ;
Abstract
A pump comprises a first thermal guard having holes therethrough for passing a gas, a second thermal guard having holes therethrough for passing the gas, a porous thermal transpiration material disposed between the first thermal guard and the second thermal guard, and a heating mechanism to maintain a temperature difference between the thermal guards across the thermal transpiration material.