Patents by Inventor Su-Liang Liu

Su-Liang Liu 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).

  • Angle-adjustable joint for electric fans
    Patent number: 5429481
    Abstract: An angle-adjustable joint including an upright stand having a substantially U-shaped mounting frame at the top, a fan support pivotally connected to the U-shaped mounting frame by a screw bolt and a nut, and a lock retained in a vertical groove on the U-shaped mounting frame and engaged with a tooth portion in an annular recess at one side of the fan support to lock the fan support in any of a series of angular positions, wherein the lock has a hooked portion on a projecting rod thereof inserted through a transeverse through hole on the fan support and hooked on a retaining flange at an opposite side of the fan support.
    Type: Grant
    Filed: August 24, 1994
    Date of Patent: July 4, 1995
    Inventor: Su-Liang Liu
  • Fan heater
    Patent number: D310871
    Type: Grant
    Filed: October 20, 1988
    Date of Patent: September 25, 1990
    Inventor: Su-Liang Liu
  • Fan stand
    Patent number: D354345
    Type: Grant
    Filed: October 22, 1993
    Date of Patent: January 10, 1995
    Inventor: Su-Liang Liu