Patents by Inventor Albert A. Zalis

Albert A. Zalis 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).

  • Piston pump with planetary gear drive
    Patent number: 4195970
    Abstract: A pump having a planetary gear drive connected to a source of rotary power drives a barrel cam to reciprocate, with a smooth cycloidal motion, a series of pistons operatively connected to the cam. Each piston is reciprocatingly disposed in a cylinder for pumping fluid from a pump inlet to an outlet connected to the cylinders through a series of valve chambers.
    Type: Grant
    Filed: October 20, 1977
    Date of Patent: April 1, 1980
    Assignee: Houdaille Industries, Inc.
    Inventor: Albert A. Zalis
  • Stuffing box for high density screw pump and pump incorporating same
    Patent number: 4047858
    Abstract: An axially fixed, radially limitedly movable stuffing box assembly including mounting means therefor. The stuffing box is adapted to have means for continuously flushing its bushing during operational rotational movements of a shaft functionally engaged therewith. The stuffing box when used in functional combination with a screw of a screw pump which is itself adapted for the pumping of high density fluids greatly reduces the tendency for radial forces generated during pumping to cause shaft deflection and to produce shaft wear and leakage.
    Type: Grant
    Filed: March 10, 1976
    Date of Patent: September 13, 1977
    Assignee: Houdaille Industries, Inc.
    Inventor: Albert A. Zalis