Patents by Inventor Yen-Jen Chien

Yen-Jen Chien 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).

  • Laser sight mounting device for mounting a laser sight on the flash attachment of a camera
    Patent number: 5437104
    Abstract: A laser sight mounting device including a mounting block, which has a mounting foot at the bottom for fastening to the flash attachment of a camera, a flash attachment at the top for mounting an electronic flash, a longitudinal center through hole, which receives the laser module of a laser sight, a longitudinal mounting groove inside the longitudinal center through hole, and a side screw hole; a first spring plate mounted inside the longitudinal mounting groove; a second spring plate mounted within the flash attachment of the mounting block to hold down the electronic flash; and a tightening up screw threaded into the screw hole to press the first spring plate causing it to hold down the laser module.
    Type: Grant
    Filed: August 4, 1994
    Date of Patent: August 1, 1995
    Assignee: Simpatico Industries Co., Ltd.
    Inventor: Yen-Jen Chien