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Motion sensor

  • US 6,198,396 B1
  • Filed: 11/30/1998
  • Issued: 03/06/2001
  • Est. Priority Date: 09/11/1998
  • Status: Expired due to Fees
First Claim
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1. A movement sensor for detecting motion in any direction comprising:

  • a first ball which is electrically conductive;

    a second ball to damp the motion of the electrically-conductive ball without substantially affecting the sensitivity of the movement sensor to motion in any direction;

    a housing to confine the movement of the first ball and the second ball;

    a plurality of electrical contact elements within the housing, the electrically-conductive ball being capable, during movement within the housing, of successively, forming electrical connection with the electrical contact elements within the housing regardless of the orientation of the housing;

    detection circuitry in electrical connection with the electrical contact elements to detect if the electrically-conducting ball is moving.

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