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EP0373544A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Delayed-action relay

Assignee: Individual
•
Filing: 1989-12-09
•
Granted: —
•
Expires: 2009-12-09
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Abstract

Abstract Translated from German Das monostabile Verzögerungsrelais trägt im Erregerteil einen Draht aus einer Form-Gedächtnis-Legierung, wobei der Erregerstrom diesen Draht mittels eines austauschbaren Dickschicht-Widerstandes erwärmt. Die mit der Erwärmung verbundene Kontraktion des Drahtes wird dazu be­nutzt, im Schalteil einen Sprungschalter zu betätigen, dessen Rück­stellfeder gleichzeitig die für den Draht aus der Form-Gedächtnis-Le­gierung erforderliche Zugspannung erzeugt. The monostable delay relay carries a wire made of a shape-memory alloy in the excitation part, the excitation current heating this wire by means of an exchangeable thick-film resistor. The contraction of the wire associated with the heating is used to actuate a snap switch in the switching part, the return spring of which simultaneously generates the tensile stress required for the wire made of the shape-memory alloy.

Inventors

  • 👤 Reinhold Barlian
  • 👤 Wolf-Erhard Steigerwald
  • 👤 Rolf Gode

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-08 00:49
CPC Classifications
H; H01; H01H; H01H61/00; H01H61/01; H01H61/0107; H01H61/02

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