Patents by Inventor Sydney J. Keasler

Sydney J. Keasler 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).

  • Pumping rate control method and apparatus for internal combustion engine driven pumps
    Patent number: 4215974
    Abstract: A method and apparatus for controlling the fluid pumping rate of an internal combustion engine driven pumping means taking suction from a zone of fluid under pressure whereby a substantially constant fluid pressure is maintained within said zone. The vacuum produced by the internal combustion engine is utilized to change the speed of the engine and the vacuum level is varied in proportion to changes in the pressure of fluid in said zone.
    Type: Grant
    Filed: January 26, 1979
    Date of Patent: August 5, 1980
    Inventors: Steven M. Cantrell, Sydney J. Keasler
  • Pumping rate control method and apparatus for internal combustion engine driven pumps
    Patent number: 4139332
    Abstract: A method and apparatus for controlling the liquid pumping rate of an internal combustion engine driven pump taking suction from a surge tank whereby a substantially constant level of liquid is maintained within the surge tank. The vacuum produced by the internal combustion engine is utilized to change the speed of the engine and the vacuum level is varied in proportion to changes in the level of liquid in the surge tank.
    Type: Grant
    Filed: March 22, 1977
    Date of Patent: February 13, 1979
    Inventors: Steven M. Cantrell, Sydney J. Keasler