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:
Oct. 14, 2008
Filed:
Oct. 14, 2004
Maurice Brunet, Sainte Colombe Pres Vernon, FR;
Maurice Brunet, Sainte Colombe Pres Vernon, FR;
Societe de Mecanique Magnetique, Saint Marcel, FR;
Abstract
The turbomolecular vacuum pump with active magnetic bearings comprises an enclosure () defining a primary vacuum chamber (), a rotor (), an electric motor (), an axial magnetic bearing (), radial magnetic bearings (), an axial detector (), and radial detectors (). Remote external electric circuits associated with the electric motor () and with the axial and radial magnetic bearings (and) essentially comprise power supply electric circuits (). Circuits () for controlling the axial and radial magnetic bearings (and) from signals issued by the axial and radial detectors (and) are embedded in a resin and placed inside the enclosure () in the primary vacuum chamber (). A hermetic leaktight electrical connector () and an electric cable () providing a connection with the remote external electric circuits () each have a number of connection wires that is less than ten.