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:
Oct. 21, 2008
Filed:
Aug. 23, 2005
Applicants:
David R. Gedeon, Athens, OH (US);
Kyle B. Wilson, Logan, OH (US);
Inventors:
David R. Gedeon, Athens, OH (US);
Kyle B. Wilson, Logan, OH (US);
Assignee:
Sunpower, Inc., Athens, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
F25B 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The cool down time for a multi-stage, pulse tube cryocooler is reduced by configuring at least a portion of the acoustic impedance of a selected stage, higher than the first stage, so that it surrounds the cold head of the selected stage. The surrounding acoustic impedance of the selected stage is mounted in thermally conductive connection to the warm region of the selected stage for cooling the acoustic impedance and is fabricated of a high thermal diffusivity, low thermal radiation emissivity material, preferably aluminum.