Patents by Inventor Lawrence E. Thomas

Lawrence E. Thomas 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).

  • Liquid dispensing gun
    Patent number: 4821927
    Abstract: A gun is provided for repeatedly dispensing precisely metered quantities of liquid from a pressurized source. The gun includes a valve spool axially slidable within a valve chamber and having at least first and second blocking members for blocking the inlet and outlet ports of the valve chamber. An actuating member associated with the gun is responsive to a unidirectional force to impart relative axial sliding movement of the blocking members in the valve chamber.
    Type: Grant
    Filed: March 16, 1987
    Date of Patent: April 18, 1989
    Assignee: Spraying Systems Co.
    Inventors: Gary Paulsen, Lawrence E. Thomas, Stephen C. Reif, Wade R. Brown
  • Liquid dispensing gun
    Patent number: 4650099
    Abstract: A liquid dispensing gun for repeatedly dispensing precisely metered quantities of liquid from a pressurized source. The gun comprises a hollow body having a valve chamber and a metering chamber connected thereto by a control orifice. An axially slidable valve spool in the valve chamber and a trigger operated actuating plunger serve to govern the reciprocation of a metering piston in the metering chamber and the admission and discharge of metered quantities of liquid to and from the metering chamber.
    Type: Grant
    Filed: April 4, 1984
    Date of Patent: March 17, 1987
    Assignee: Spraying Systems Company
    Inventors: Gary Paulsen, Lawrence E. Thomas