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:
Jan. 12, 2021
Filed:
Mar. 31, 2017
Vat Holding Ag, Haag, CH;
Anton Neumeir, Mering, DE;
Christoph Angst, Eichberg, CH;
Karlheinz Summer, Bludenz, AT;
Bernhard Duelli, Ubersaxen, AT;
VAT Holding AG, Haag, CH;
Abstract
A closure device including a closure element for closing an opening surrounded by a valve seat of the closure device. The closure device has an open state, in which the closure element exposes the opening at least partly, for an object to be led through the opening, an intermediate state, in which the closure element is brought into alignment with the opening without contact with the valve seat, and a closed state, in which the closure element at least rests on the valve seat via a seal of the closure device. The seal has a hollow space, to which a pressure medium from a pressure source of the closure device can be applied, and the closure device has a suction apparatus for sucking the pressure medium out of the hollow space of the seal.