Actuator for a pneumatic valve, valve element, valve assembly and pump

US11073219B2 · kind B2 · utility

Assignee

• ALFMEIER PRÄZISION SE · DE

Inventors

• Erich Dörfler · Treuchtlingen, DE
• Ronny Gehlmann · Hilpoltstein, DE
• Helmut Auernhammer · Laufenburg (Baden), DE
• Matthias Mitzler · Graben, DE

Key dates

• Filing date: May 16, 2019
• Grant date: Jul 27, 2021
• Expiry date: May 16, 2039

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16K31/02
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An actuator for a valve element includes one base plate; one actuating element having a first end section, a second end section, and a sealing element on the first end section; one connecting element; and one SMA element having a U-shape including two parts substantially parallel to one another, a first end, a second end, and a middle section between the two parts. The actuating element is at least partially arranged on and connected to the base plate via the second end section. The connecting element is conductively connected to two points of the SMA element. A middle section of the SMA element is connected to the first end section of the actuating element so that a shortening of the SMA element causes a stroke of the sealing element.