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:
Sep. 20, 2011
Filed:
Apr. 17, 2004
Jennifer Mary Schooling, Hurstpierpoint, GB;
Barrie Dudley Brewster, Brighton, GB;
Jennifer Mary Schooling, Hurstpierpoint, GB;
Barrie Dudley Brewster, Brighton, GB;
Edwards Limited, Crawley, West Sussex, GB;
Abstract
A vacuum pump () includes a pumping arrangement, a shaft () for driving the pumping arrangement, a motor () for rotating the shaft () and a bearing arrangement supporting the shaft () for rotation, the bearing arrangement having a rolling bearing (), supporting a first portion of the shaft (), and a thrust bearing (). The thrust bearing () houses a plurality of rolling elements () such that they are maintained in bearing contact with an outer race () of the rolling bearing () and a race () of the thrust bearing (). In this way axial movement of the rolling bearing () can be resisted whilst allowing radial movement of the rolling bearing ().