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. 14, 1993
Filed:
Mar. 10, 1992
Calvin E Reynolds, Cameron Park, CA (US);
Other;
Abstract
Presented is a vacuum valve having a metallic housing that may be mounted in a vacuum system in any attitude. The valve includes a 'knife' edge seal formed on the interior of the metallic housing on one wall thereof, surrounding a port therein, and adapted to sealingly impinge against a metallic sealing pad mounted within the housing on a carriage that is translatable longitudinally of the housing by manipulation of a spindle that cooperates with a bellows sealing the housing. The spindle extends out to the housing and includes means for suitable manipulation of the spindle. Means are provided within the housing operatively interposed between the carriage and sealing pad to effect lateral translation of the sealing pad in relation to the carriage on which it is mounted to engage and disengage the 'knife' edge seal upon appropriate rotation of the spindle. Means are also provided within the housing to prevent seizing of metallic parts that move relative to one another within the vacuum valve.