Patents by Inventor Po Han Chang

Po Han Chang 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).

  • Adjustable lock latch
    Patent number: 6030008
    Abstract: An adjustable lock latch is composed of a main body, two fastening plates, two rotary wheels, and a handle. The main body has two action rods provided with a projection. The fastening plates are provided with a first position confining hole and a second position confining hole. The rotary wheels are provided with a through hole and a moving block engageable with the projection of the action rods of the main body. The handle is engageable with the through hole of the rotary wheels and with the first position confining hole or the second position confining hole of the fastening plates, so as to actuate the moving block of the rotary wheels.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: February 29, 2000
    Inventor: Po Han Chang