Patents by Inventor Larry S. Pruett

Larry S. Pruett 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).

  • Adjustable thermostat valve system for automotive vehicles
    Patent number: 4493455
    Abstract: This automobile thermostat valve system is designed to take the place of the common thermostat, so as to enable an automobile to run efficiently in any part of the world where there are various temperature differences. Primarily, it consists of a temperature sensing plug, an electronic temperature reading gauge, a control switch for setting the gauge to the desired temperature range, and a modified thermostat, which is vacuum operated to control the valve stem, which controls the water flow in the engine block and radiator of the automobile.
    Type: Grant
    Filed: June 8, 1983
    Date of Patent: January 15, 1985
    Inventor: Larry S. Pruett