Patents by Inventor Yang-chou Liu

Yang-chou 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).

  • Frame-type car jack
    Patent number: 5603486
    Abstract: An improved frame-type, manually-operated hydraulic car jack consists of a base, a pressure release valve, a socket, a lever, a hydraulic oil cylinder, a piston, a pair of pulling bars, a pair of links, a pair of pushing bars, a load-engaging head and a locking rod. A pair of horizontally aligned holes which have a diameter slightly larger than that of the locking rod are defined in the pushing bars. When the car jack is driven to lift a car supported by the car jack to a desired level, the locking rod is inserted into and extended through the holes on the pushing bars thereby to prevent an unintentional lowering of the car jack and the car.
    Type: Grant
    Filed: September 15, 1995
    Date of Patent: February 18, 1997
    Inventor: Yang-chou Liu
  • Hands-free kit with a charger function for a cellular phone
    Patent number: D384937
    Type: Grant
    Filed: February 8, 1996
    Date of Patent: October 14, 1997
    Inventor: Yang-chou Liu