Patents by Inventor John F. McJunkin

John F. McJunkin 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).

  • Auxiliary sprinkler system controller to maintain healthy turf with minimum water usage
    Patent number: 5839660
    Abstract: An auxiliary sprinkler system control unit that interrupts a sprinkler system when ambient temperature is below thirty six degrees and when wind velocity is above ten miles per hour and when one half inch of water has been measured and delays the sprinkler for one day when in each month a daily running total of water addition is greater than a daily running total of an expected evapotranspiration or soil evaporation and plant transpiration rate as published for a specific area; said unit thereby providing a minimum amount of water to keep a healthy but slow growing turf.
    Type: Grant
    Filed: June 11, 1997
    Date of Patent: November 24, 1998
    Inventors: Paul Morgenstern, John F. McJunkin