Patents by Inventor Hing L. Chiu

Hing L. Chiu 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).

  • Publication number: 20080240968
    Abstract: The present invention is directed to a gear pump having a housing (10?) with an interior pumping chamber (200) and an inlet (40?) to and outlet (42?) from the chamber, the outlet being spaced from the inlet. A pair of rotating gears (330,332) is located in the chamber, the gears including teeth which mesh during gear rotation. The gears are preferably powder metal construction and fixedly secured on a shaft (230,232) having an axis of rotation. A pair of one-piece bearings (210,212) is located in the chamber and journal one of first and second end portions of each shaft (320). The one-piece bearings provide precise alignment of the first and second end portions of the shafts and maintain the shafts in parallel relation.
    Type: Application
    Filed: February 14, 2005
    Publication date: October 2, 2008
    Inventor: Hing L. Chiu