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US 7,395,825 B2Granted
Method and device for activating an element made of a shape memory alloy
AssigneeBSH Bosch und Siemens Hausgeraete GmbH
InventorsAlbert Dirnberger, Rüdiger Eiermann, Helmut Jerg, Stefan Kautz
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Abstract
A simple and cost-effective method is provided, according to which a positive temperature component (PTC) element directly controls the element made of a shape memory alloy. A simple and cost effective device for performing the method has a PTC element series-connected upstream from the element made of a shape memory alloy, in the electric circuit for the element made of a shape memory alloy.
Claims1
A dishwasher, comprising:
- a receptacle receiving dishes to be washed;
- supply lines injecting water into and from said receptacle;
- and
- valves connected in said supply lines, said valves containing:
- a closing spring made of a shape memory alloy;
- a positive temperature component element disposed in series with said closing spring;
- and
- a spring element for returning said closing spring to its original shape after a heating cycle by said positive temperature component element.
5 more elements
Dependencies are inferred from the claim text.