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Changing the state of a switch through the application of power

  • US 9,530,581 B2
  • Filed: 06/02/2011
  • Issued: 12/27/2016
  • Est. Priority Date: 06/02/2011
  • Status: Expired due to Fees
First Claim
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1. A switch comprising:

  • a spring;

    a collapsing element;

    the spring having a first state in which it is being bold in tension by a restraining element;

    the spring having a second state in which it is not being held in tension because the restraining element has failed;

    the collapsing element being situated such that when sufficient power is applied to the collapsing element heat from the collapsing element will cause the restraining element to fail;

    a first contact coupled to the spring;

    a second contact coupled to the spring;

    the first contact and the second contact being separate from each other when the spring is in the first state;

    the first contact and the second contact being electrically connected to each other when the spring is in the second state; and

    whereina portion of the first end of the spring adjacent to where the first contact is coupled is non-conductive to electricity, anda portion of the second end of the spring adjacent to where the second contact is coupled is nonconductive to electricity.

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