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Motion detectors and security devices incorporating same

  • US 5,027,105 A
  • Filed: 03/08/1988
  • Issued: 06/25/1991
  • Est. Priority Date: 03/08/1988
  • Status: Expired due to Fees
First Claim
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1. A motion detector comprisinga container having a conductive inner surface forming a first element,a conductive member contacting said conductive inner surface and forming a second element,a tether connecting said conductive member to said container, said tether being spaced from said conductive surface and providing means mounting said elements for relative movement with respect to each other in response to movement of the container,said conductive inner surface and said tether being, respectively, connected in series across an electrical potential,whereby a motion signal is produced by an increase in resistance between said conductive member and said conductive inner surface when there is movement of said container.

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