Patents by Inventor Guy L. B. Smith

Guy L. B. Smith has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Pressure monitor
    Patent number: 4494106
    Abstract: A tire pressure monitor which includes a signal generating section and a signal processing section. The signal generating section has a transducer which produces a first signal which is dependent on the tire pressure, and a transistor the collector current of which is controlled by the first signal. The signal generating section is supplied with power from a battery source and the current so supplied includes the collector current and is therefore dependent on the tire pressure. The signal processing section includes a monitor which monitors the supply current to the signal generating section and a display for providing an indication of the tire pressure.
    Type: Grant
    Filed: February 18, 1982
    Date of Patent: January 15, 1985
    Assignee: Grathnail Development Company Limited
    Inventors: Guy L. B. Smith, Derik Howard, Anton B. Goedhals