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:
Jul. 06, 2021
Filed:
Jul. 18, 2018
Alfmeier Präzision SE, Treuchtlingen, DE;
Matthias Mitzler, Graben, DE;
Erich Dörfler, Landsberg, DE;
Klaus Beetz, Weissenburg, DE;
Wolfgang Beyerlein, Mitteleschenbach, DE;
Alfmeier Präzision SE, Treuchtlingen, DE;
Abstract
A valve has a valve housing with a lid, bottom, and an intermediate housing portion between the lid bottom. The valve housing encloses a valve chamber, a flow chamber, and an actuation chamber, with at least one valve opening leading from the flow chamber to the actuation chamber. Inside the actuation chamber at least one axially movable actuator movable between a closing position to close the valve opening and an opening position to release the valve opening, one wire- or band-shaped SMA element made of a shape memory alloy to activate the actuator in the opening direction, one return element to move the actuator in closing direction, and one printed circuit board. The SMA element is attached to the actuator at a middle section and is electrically connected at its ends to the printed circuit board to be supplied with an electrical current.