Patents by Inventor Mateiu J. Oana

Mateiu J. Oana 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).

  • Rotary impeller pump or motor with counterbalancing chamber in thrust plate bearing counterbore
    Patent number: 4337018
    Abstract: A rotary impeller pump or motor is provided having a case, a pair of rotary impellers in said case, a plate having a first face divided by lands into a plurality of chambers against corresponding ends of the impellers and a second face having two counterbores around the rotary impellers, annular seal means intermediate the ends of each counterbore forming a pair of chambers within the counterbore, opposed inlet and outlet ports in said case whereby said plate is balanced in pressure on opposite sides by fluid in said chambers on the first face and the counterbores.
    Type: Grant
    Filed: January 29, 1980
    Date of Patent: June 29, 1982
    Assignee: Commercial Shearing, Inc.
    Inventors: Carl M. Singer, Mateiu J. Oana, John D. Turko