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:
Jun. 08, 2010
Filed:
Sep. 10, 2007
Bernhard Duelli, Uebersaxen, AT;
Bernhard Duelli, Uebersaxen, AT;
Vat Holding AG, Haag, CH;
Abstract
A vacuum valve including a valve housing two valve openings, a closure member having two closure plates, a transverse drive unit for adjusting the closure member between an open position and an intermediate position where the closure plates cover the valve openings, a first longitudinal drive unit for adjusting the closure member between the intermediate position and a first closed position, and a second longitudinal drive unit for adjusting the closure member between the intermediate position and a second closed. Each longitudinal drive unit includes a plurality of actuating elements which are guided into the vacuum area of the valve housing. These actuating elements are adjustable by driving elements between a retracted, passive position where their actuating ends are raised from the closure member and an advanced, active position where their actuating ends are pressed against the closure member and press the respective closure plate against the respective valve seat.