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:
Sep. 09, 2010
Tom Grimseth, Oslo, NO;
William Bakke, Røyken, NO;
Tom Grimseth, Oslo, NO;
William Bakke, Røyken, NO;
Statoil ASA, Stavanger, NO;
Abstract
The present invention discloses a bearing system for a high speed rotary machine, said bearing system comprising a rotor shaft () including a plurality of active magnet or hydrostatic radial bearings () and at least one active magnet or hydrostatic axial bearing () for supporting said rotor shaft (), said axial bearing () being arranged at one end of said rotor shaft (), said bearing system also comprising a permanent magnet (PM) axial bearing arranged at a same end as the at least one active magnet or hydrostatic axial bearing (), said permanent magnet axial bearing comprising at least one permanent magnet () arranged on the rotary shaft () and at least one permanent magnet () connected to a control system for varying a distance or gap () between said permanent magnets (), thus providing a variable force in said permanent magnet axial bearing in order to counteract at least semi-static axial forces imposed on said rotor shaft ().