Patents by Inventor Ho T. Sea

Ho T. Sea 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).

  • Patent number: 4930255
    Abstract: An electric door window assembly incorporating two glass plates of different properties in which the desired one or both plates can be selectively raised. A pair of frames are fixedly mounted on the car door. Two pinions are engaged to and driven by a worm wheel which is in mesh with a motor driven worm. The pinions, each of which engages a toothed element to raise or lower a movable support rail with a glass plate mounted on it, are rotatable by the worm wheel through a pair of clutches, with each clutch being disposed between the worm wheel and a corresponding pinion, and selectively electromagnetically actuated to permit the worm wheel to drive the corresponding pinion in order to raise or lower the desired glass plate.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: June 5, 1990
    Inventor: Ho T. Sea