Patents by Inventor James O. Sims

James O. Sims 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).

  • Method of manufacture of hydraulic cylinders utilizing bronze overlays for engaging surfaces
    Patent number: 4435893
    Abstract: The method of manufacture of a hydraulic cylinder in which a piston for the cylinder is formed from a steel workpiece which is rotated and a bronze overlay fused into its surface while it is rotating, the overlay being continuously monitored and machined to a precise diameter. Thereafter, spaced ring grooves are cut into the piston.
    Type: Grant
    Filed: October 13, 1981
    Date of Patent: March 13, 1984
    Inventor: James O. Sims
  • Rotary pump assembly container
    Patent number: 4384820
    Abstract: A pump assembly wherein fluid under pressure in a pump housing is prevented from escaping around the drive shaft of the pump by a seal which is held in place by the combination of a spring and fluid pressure applied through a diaphragm from the interior of the pump housing.
    Type: Grant
    Filed: September 15, 1981
    Date of Patent: May 24, 1983
    Inventor: James O. Sims
  • Rotary pump assembly
    Patent number: 4289445
    Abstract: A pump assembly wherein fluid under pressure in a pump housing is prevented from escaping around the drive shaft of the pump by a seal which is held in place by the combination of a spring and fluid pressure applied through a diaphragm from the interior of the pump housing.
    Type: Grant
    Filed: September 25, 1978
    Date of Patent: September 15, 1981
    Inventor: James O. Sims
  • Valve
    Patent number: 4210308
    Abstract: A valve in which a blade having an opening is moved between two oval-shaped seals, each having a pair of spaced circular inner seals, all housed in a valve body. One set of aligned circular seals has a central opening flanked by two opposing and aligned openings through the valve body. When the opening of the blade is positioned in alignment with the opening through the seals and the body, the valve is, of course, opened. When the opening of the blade is repositioned opposite the other set of o-shaped seals, the valve is very tightly closed.
    Type: Grant
    Filed: July 24, 1978
    Date of Patent: July 1, 1980
    Inventor: James O. Sims