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. 02, 1982
Filed:
May. 22, 1981
Allen J Bartlett, Milford, MA (US);
Robert M Lewis, Hudson, MA (US);
Helix Technology Corporation, Waltham, MA (US);
Abstract
For a given temperature differential between a refrigerated heat sink and frontal cryopanel array, the mass of the entire cryopump array is minimized by providing thermal struts between the heat sink and the frontal array. The thermal struts extend through, but are isolated from, the primary pumping surface to minimize their lengths. The struts support the frontal array independent of the side radiation shield to facilitate fabrication. To further reduce the temperature differential to the frontal array, heat pipes may be provided. By reducing the temperature differential between the frontal cryopanel array and refrigerated heat sink through the use of solid thermal struts or heat pipes the load carrying capability of a cryopump can be improved. Heat pipes may also serve as a thermal switch between a heat sink and a cryopanel.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile