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Device for changing the operational state of an apparatus

  • US 8,946,973 B2
  • Filed: 07/06/2009
  • Issued: 02/03/2015
  • Est. Priority Date: 07/07/2008
  • Status: Active Grant
First Claim
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1. A device for changing the operational state of an apparatus, comprising:

  • at least one means for transforming a mechanical excitation, applied to the surface of the apparatus, into an electric signal,the at least one means for transforming comprising a passive transducer and a means for amplifying the excitation,the passive transducer disposed between a rigid excitation transmitting means and a support with a central recessed area; and

    a power providing means for supplying at least a part of the electric power necessary to enable a change of the operational state of the apparatus from a zero power or power down mode into an active state,wherein the electric power is obtained out of the electric signal.

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