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:
Mar. 09, 1982
Filed:
Jan. 28, 1980
Otto Winkler, Balzers, LI;
Balzers Aktiengesellschaft, , LI;
Abstract
In metal-to-metal sealed high vacuum valves, a parallel motion of the sealing faces relative to each other is to be prevented, to avoid damaging of the faces during their mutual contact. This is obtained by means of a cup spring type shutoff member having a sealing face on its periphery, cooperating with the inner edge of a second conically shaped annular spring element as the opposite sealing face. The flexural stiffnesses and lever arm lengths in the radial direction of the two spring elements are to be approximately equal to each other. To ensure that the spring elements can perform their motion only in the direction of normals to the sealing faces, a guide cone having an engaging portion is advantageously provided.