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Electrical tilt switch

  • US 5,209,343 A
  • Filed: 01/21/1992
  • Issued: 05/11/1993
  • Est. Priority Date: 01/21/1992
  • Status: Expired due to Fees
First Claim
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1. A tilt switch for opening and closing an electric circuit in accordance with the angle of inclination of said switch, comprising:

  • a cavity formed within a conductive housing, said cavity enclosing an atmosphere that is inert to conductive materials;

    at least one free moving spherical weight, having a predetermined radius of curvature and a conductive circumferential surface, positioned in said cavity, said at least one spherical weight moving to an operating position within said cavity when said at least one spherical weight is biased by gravity to said operating position by the angle of inclination of said housing; and

    at least one conductive terminal positioned at said operating position, wherein said at least one conductive terminal has an arcuate groove of said predetermined radius of curvature disposed thereon, said at least one spherical weight engaging said arcuate groove at said operating position electrically coupling said at least one conductive terminal to said conductive housing, thereby completing said electric circuit.

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