Patents by Inventor Wayne E. Davis

Wayne E. Davis 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).

  • Grounding arrangement for microelectronic sprinkler control
    Patent number: 4215382
    Abstract: A grounding arrangement is disclosed for microelectronic control of operating devices such as solenoid operated sprinkler valves in an a-c sprinkler system wherein one a-c power line connecting the several valve solenoids is earth-grounded and d-c microelectronic control circuits use the voltage level of the non-grounded a-c power line as a common voltage reference to operate switch means which interruptively supply a-c power to the valve solenoids.
    Type: Grant
    Filed: June 15, 1978
    Date of Patent: July 29, 1980
    Assignee: Johns-Manville Corporation
    Inventor: Wayne E. Davis