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:
Jan. 24, 2017
Filed:
Jan. 17, 2012
Neil Turner, Godalming, GB;
Stephen Dowdeswell, Cuckfield, GB;
Sivabalan Kailasam, Worthing, GB;
Alan Ernest Kinnaird Holbrook, Pulborough, GB;
Neil Turner, Godalming, GB;
Stephen Dowdeswell, Cuckfield, GB;
Sivabalan Kailasam, Worthing, GB;
Alan Ernest Kinnaird Holbrook, Pulborough, GB;
Edwards Limited, Crawley, GB;
Abstract
A multi-stage vacuum pump may include first and second half-shell components defining a plurality of pumping chambers and for assembly together along respective longitudinal extending faces; first and second end stator components for assembly at respective longitudinal seals for sealing between the first and second half-shell stator components when assembled together at the longitudinally extending faces; and annular seals for sealing between the first and second end stator components and the first and second half-shell stator components when assembled; wherein the longitudinal seals have end portions which abut against the annular seals for sealing therebetween and the first and second half-shell stator components have formations for resisting movement of the end portions away from the annular seals when the end portions are compressed between the first and second half-shell stator components.