Patents by Inventor John R. Heritage

John R. Heritage 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).

  • Fluid flow meters
    Patent number: 5063786
    Abstract: A fluid flow meter of the fluidic oscillator type and suitable for electrically conducting liquids, for example for metering domestic water supplies, comprises a feed back oscillator with magnets creating a magnetic field across at least one of the flow paths and a pair of electrodes detecting the resultant potential difference across the flow path. The frequency of the detected signal gives a measure of the flow rate and a counter of the cycles will give the total flow over a period.
    Type: Grant
    Filed: October 12, 1990
    Date of Patent: November 12, 1991
    Assignee: Severn Trent Water Limited
    Inventors: Michael L. Sanderson, John R. Heritage
  • Fluid flow meters
    Patent number: 4962670
    Abstract: A fluid flow meter of the fluidic oscillator type and suitable for electrically conducting liquids, for example for metering domestic water supplies, comprises a feed back oscillator with magnets creating a magnetic field across at least one of the flow paths and a pair of electrodes detecting the resultant potential difference across the flow path. The frequency of the detected signal gives a measure of the flow rate and a counter of the cycles will give the total flow over a period.
    Type: Grant
    Filed: January 31, 1990
    Date of Patent: October 16, 1990
    Assignee: Severn Trent Water Limited
    Inventors: Michael L. Sanderson, John R. Heritage