Patents by Inventor Einar P. Cook

Einar P. Cook 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).

  • Pump having impeller rotational about convoluted stationary member
    Patent number: 5040944
    Abstract: A pump with a tubular housing having a predetermined inlet and outlet, a convoluted stationary member mounted in the tubular housing and a rod extending in a substantially spiral course received within the housing for rotation about the stationary member to move fluid from the inlet through the housing and from the outlet thereof.
    Type: Grant
    Filed: September 11, 1989
    Date of Patent: August 20, 1991
    Inventor: Einar P. Cook