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:
Dec. 26, 1989
Filed:
Jun. 03, 1988
Applicant:
Inventors:
Robert B Phillips, Horsham, GB;
Paul R Stonestreet, Newport Pagnall, GB;
Assignee:
VG Instruments Group Limited, Crawley, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251368 ; 277D / ;
Abstract
An apparatus and method providing a bakeable sealing means for a vacuum system, and thereby an improved bakeable ultra-high vacuum system; the apparatus comprising: a first sealing element composed substantially of an elastomeric material; a second sealing element comprising PTFE; and means for engaging the first sealing element with the second sealing element and for compressing the first sealing element; as for example in an improved bakeable seal between a first and a second flange, or in a gate valve, or a vacuum chamber entry lock.