Patents by Inventor Brian G. Refoy

Brian G. Refoy 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).

  • Monitor for an electrically-controlled system
    Patent number: 4467391
    Abstract: A monitor for an electrically-controlled system is provided. A threshold detector senses the voltage variations in the system by means of an optocoupler. The system is disabled by a relay if a voltage level does not meet a predetermined parameter.
    Type: Grant
    Filed: December 28, 1981
    Date of Patent: August 21, 1984
    Inventors: Brian G. Refoy, Earnest E. Taylor
  • Electronic speedometer for marine craft
    Patent number: 4205552
    Abstract: A pitot tube (10) produces pressure when a marine craft moves through water. The pressure produced in the pitot tube (10) is applied to a monolithic pressure transducer (14) that includes a piezoresistive integrated circuit for producing an output voltage proportional to the pressure applied from the pitot tube (10). The output voltage of the pressure transducer (14) is processed through an op amp (28) and a converter (40) to produce a voltage (E.sub.o) that is linearly proportional to the speed of the marine craft. This voltage (E.sub.o) is applied to a volt meter (62) that is scaled to indicate the speed of the marine craft in distance per unit time.
    Type: Grant
    Filed: December 19, 1978
    Date of Patent: June 3, 1980
    Inventor: Brian G. Refoy