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Solid state activity-activated battery device and method

  • US 6,906,436 B2
  • Filed: 01/02/2003
  • Issued: 06/14/2005
  • Est. Priority Date: 01/02/2003
  • Status: Expired due to Fees
First Claim
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1. A system comprising:

  • a substrate;

    a circuit connected to the substrate;

    a thin-film battery connected to the substrate and connected to the circuit, the thin-film battery for powering the circuit; and

    an acceleration-enabled switch connected to the substrate for electrically activating the circuit;

    wherein the acceleration-enabled switch is a MEMS device;

    wherein the acceleration-enabled switch includes;

    a first cantilevered-beam-closure-switch; and

    a second cantilevered-beam-closure-switch;

    wherein the first cantilevered-beam-closure-switch forms electrical contact in response to a first acceleration and the second cantilevered-beam-closure-switch forms electrical contact in response to a second acceleration, the first acceleration different than the second acceleration;

    wherein the circuit further comprises;

    a memory; and

    a timer, wherein the time when one of the first cantilevered-beam-closure-switch forms electrical contact in response to a first acceleration, or the time when the second cantilevered-beam-closure-switch forms electrical contact in response to a second acceleration is stored in memory.

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