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:
Dec. 25, 2007
Filed:
May. 12, 2004
Jean-pierre Desbiolles, Cruseilles, FR;
Jean-Pierre Desbiolles, Cruseilles, FR;
Alcatel, Paris, FR;
Abstract
A molecular drag, turbomolecular, or hybrid turbo/drag pump () of the invention has an outlet stage with a cylindrical peripheral wall () and a radial outlet orifice () passing through the cylindrical peripheral wall (). An annular coaxial closure member () bears against the cylindrical peripheral wall () around the radial outlet orifice. The annular coaxial closure member () includes a through slot and optionally also a total closure shutter (). The annular coaxial closure member () is caused to turn about the axis of the cylinder by a motor () in order to place its through slot or its total closure shutter () in register with the radial outlet orifice (), or partially in register with the radial outlet orifice () in order to adjust the opening of the valve and regulate the gas flow pumped by the pump (). A pump is thus provided that includes an integrated regulator and/or closure valve.