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:
Apr. 14, 2009
Filed:
Dec. 12, 2006
Aniruddha Dattatraya Gadre, Rexford, NY (US);
Darren Lee Hallman, Clifton Park, NY (US);
John Scott Price, Niskayuna, NY (US);
Paul M. Ratzmann, Germantown, WI (US);
Richard Michael Roffers, Whitefish Bay, WI (US);
Walter John Smith, Ballston Spa, NY (US);
Aniruddha Dattatraya Gadre, Rexford, NY (US);
Darren Lee Hallman, Clifton Park, NY (US);
John Scott Price, Niskayuna, NY (US);
Paul M. Ratzmann, Germantown, WI (US);
Richard Michael Roffers, Whitefish Bay, WI (US);
Walter John Smith, Ballston Spa, NY (US);
General Electric Company, Niskayuna, NY (US);
Abstract
A system for mitigating a gas load imposed upon a high vacuum chamber, thereby reducing the overall pressure, includes a device mounted onto a rotating gantry. The device has a first chamber enclosing a high vacuum and a first region in which anode bearings are positioned. A rotatable shaft has a first portion extending into the first chamber and a second portion extending into the first region. A ferrofluid seal is positioned about the rotatable shaft and positioned between the first portion and the second portion, the ferrofluid seal fluidically separating the first chamber from the first region. At least one pressure-reducing unit is fluidically connected to the first chamber.