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:
Nov. 06, 2012
Filed:
Oct. 31, 2007
Sidney W. Yuan, Los Angeles, CA (US);
Carl S. Kirkconnell, Huntington Beach, CA (US);
Kenneth D. Price, Long Beach, CA (US);
Anthony T. Finch, Long Beach, CA (US);
Gerald R. Pruitt, San Pedro, CA (US);
Sidney W. Yuan, Los Angeles, CA (US);
Carl S. Kirkconnell, Huntington Beach, CA (US);
Kenneth D. Price, Long Beach, CA (US);
Anthony T. Finch, Long Beach, CA (US);
Gerald R. Pruitt, San Pedro, CA (US);
Raytheon Company, Waltham, MA (US);
Abstract
An inertance tube and a surge volume for a pulse tube refrigerator system may be integrally coupled together, such as by the inertance tube being at least in part a channel in a wall of the surge volume. The surge volume may have a helical channel in an outer wall that forms part of the inertance tube. The surge volume tank may be surrounded by a cover that closes off the channel to form the inertance tube as an integral part of the surge volume. The inertance tube may have a non-circular cross section shape, such as a square shape or non-square rectangular shape. The channel may be tapered, perhaps changing aspect ratio. Alternatively, the inertance tube may be a separate tube having a non-circular shape, which may be wrapped around at least part of the surge volume.