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Pressure alarm device

  • US 6,006,600 A
  • Filed: 07/21/1997
  • Issued: 12/28/1999
  • Est. Priority Date: 07/21/1997
  • Status: Expired due to Fees
First Claim
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1. A tire pressure alarm device, comprising:

  • a connector body formed by a metal connector base and a plastic sleeve base which is connected to an upper portion of the metal connector base such that the connector base extends therefrom;

    a top-mounted cap which is screwed onto the sleeve base to define an internal space with the connector body;

    a spacer mount separating the connector base into an upper space and a lower space;

    internal threads disposed on the connector base within the lower space and adapted to engage threads on a tire valve stem;

    a valve nozzle providing fluid communication between the lower space and the upper space;

    a trigger device and a power supply fixture installed within the internal space;

    a conical spring positioned in between the trigger device and the power supply fixture; and

    a pressure switch disposed within the upper space and the internal space, said pressure switch having components including a diaphragm, a guide ring mount, a conductive ring, an active recessed seat with a circular contact edge, a coil spring, a hollow threaded base, a mounting base, and an adjustment screw of the coil spring, the active recessed seat having a lower section positioned against a top of the diaphragm and being capable of upward and downward movement within the guide ring mount, the hollow threaded base being fastened onto the mounting base at an upper extent of the active recessed seat, the coil spring being seated within the active recessed seat, the adjustment screw being screwed into the hollow threaded base and extending to contact the coil spring, the conductive ring being supported by the guide ring mount such that the active recessed seat completes an electrical circuit of the conductive ring, the trigger device and the power supply fixture when the circular contact edge thereof is in contact with the conductive ring, the components of the pressure switch being inserted in the same direction.

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