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:
Jul. 15, 2025
Filed:
Dec. 16, 2022
Edwards Limited, Burgess Hill, GB;
Cainan Long, Burgess Hill, GB;
Nigel Paul Schofield, Burgess Hill, GB;
Alan Ernest Kinnaird Holbrook, Burgess Hill, GB;
Edwards Limited, Burgess Hill, GB;
Abstract
The present disclosure relates to vacuum pumpcomprising a substantially hermetically sealed enclosure, a core pump assembly located within the enclosure, and an inert purge gas inletfluidly connected to the enclosurefor supplying inert purge gas to an interior of the enclosuresurrounding the core pump assembly. By providing a sealed enclosurearound the core pump assembly and supplying inert purge gas thereto via the inlet, an inert positive pressure can be applied to the core pump assembly that reduces leakage of process gas from the core pump assembly such that seals therein can be removed or reduced. In particular, the need for elastomer seals that may be expensive and not be suited to high temperature or corrosive process gas conditions can be removed.