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:
Jun. 18, 2013
Filed:
Jun. 16, 2008
Albert Cacard, Groisy, FR;
Francois Houze, Annecy, FR;
Albert Cacard, Groisy, FR;
Francois Houze, Annecy, FR;
Alcatel Lucent, Paris, IT;
Abstract
The invention pertains to a dry vacuum pump comprising at least one rotating shaft () mounted on at least one lubricated bearing () and at least one sealing device () for sealing off lubricating fluids capable of entering the shaft passage from said bearing (), said sealing device () being installed between the lubricated bearing () and a dry pumping stage (), characterized in that said sealing device () comprises a centrifuge element () designed to rotate in unison on said shaft () and comprising at least one through line () capable of separating the lubricating fluids from the fluid that may travel from said bearing () to the dry pumping stage ().