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:
Apr. 02, 2019
Alfmeier Präzision SE, Treuchtlingen, DE;
Erich Dörfler, Landsberg, DE;
Matthias Mitzler, Graben, DE;
Alfmeier Präzision SE, Treuchtlingen, DE;
Abstract
A valve includes a flow chamber and an actuating chamber, and a connecting valve opening. An actuating element can close or open the valve opening. An SMA element and a restoring element move the actuating element in opposite directions. A first area of the flow chamber is attachable to an air supply unit, and a second area of the flow chamber is attachable to a media reservoir and to atmosphere to release air from the flow chamber via an opening. An actuator coupled with the actuating element selectively connects the opening to atmosphere or closes the opening. A first check valve prevents fluid from flowing back from the second area of the flow chamber through the valve opening into the first area of the flow chamber when the actuating element is in the opening position.