Patents by Inventor Li Chi Yuan

Li Chi Yuan 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: 5983681
    Abstract: An improved lock device for the automatic shift lever of a car, and especially a lock device which still has a theft-proof effect after it is broken by limiting a limiting rod, wherein, in a receiving hole of a knob, a rear and a front hole is provided respectively on a protruding portion on the front end of an operating rod and at a position position on the periphery of an inner end of a push button to exactly receive the limiting rod which is surrounded by a spring, when the push button is pressed or released, the end of the limiting rod abuts against a plateform in the receiving hole, while the other end can freely slide to and fro relatively to the rear and front holes; and when in locking, the lever lock is rotated to render a stop piece provided between the push button and the protruding portion to rotate to the position between the rear and front holes to limit and to reduce the stroke of the limiting rod to the range between the plateform and the stop piece, thus an object of locking is attained.
    Type: Grant
    Filed: March 3, 1998
    Date of Patent: November 16, 1999
    Inventor: Li Chi Yuan
  • Patent number: 5921118
    Abstract: The present invention relates to an improved shift lever lock structure of a car, wherein, a lock core and an upper and a lower bead seat are placed in from the front end of the housing of the lever lock, the lock core is extended through a through hole on the wall of the housing, then a C shaped ring and a moving sheet set for the lock are mounted on and secured, a movable side pin is transversely provided on the upper bead seat, it can be pushed to open the lock when a key is inserted, the lock core is very difficult to be destroyed from the front end thereof, thus an additional safety is provided.
    Type: Grant
    Filed: January 23, 1998
    Date of Patent: July 13, 1999
    Inventor: Li Chi Yuan