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:
Apr. 13, 2021
Filed:
Jul. 25, 2016
Vat Holding Ag, Haag, CH;
Christoph Böhm, Gams, CH;
Adrian Eschenmoser, Grabs, CH;
VAT Holding AG, Haag, CH;
Abstract
A pneumatic valve drive () for a valve (), in particular for a vacuum valve, which has at least one pneumatic cylinder () with at least one piston () that is movably mounted in the pneumatic cylinder () and at least two cylinder cavities () arranged on opposite sides of the piston (). Each cylinder cavity () is connected to at least one pressure source for applying pressure to each cylinder cavity (). One of the pressure sources is a constant pressure source () for applying a constant pressure to the cylinder cavity () arranged on one of the sides of the piston, and one of the other pressure sources is a regulated pressure source () for applying a variably regulatable pressure to the cylinder cavity () arranged on the opposite side of the piston ().