Patents by Inventor Lien-Ker Chang

Lien-Ker 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).

  • Patent number: 5199895
    Abstract: A edge connector socket for printed circuit boards comprises an elongate insulative housing having a channeled receiving space extending between respective end portions thereof, and a plurality of conductive contact members disposed on corresponding slots formed perpendicularly along the receiving space. Each end portion has a vertical post with a protruding pin on a first side of the housing and an inclined ramp for guiding the insertion of a daughterboard on a second side of the housing. Each contact member has a resilient spring appendage and a fulcrum appendage formed spacedly thereon so as to define a receiving space for an inserted edge portion of a daughterboard. The spring appendages deflect upon the insertion of a daughterboard and apply a torque thereon so as to rotate the board about a pivot axis defined by the fulcrum appendages in contact with an opposing side thereon.
    Type: Grant
    Filed: February 4, 1992
    Date of Patent: April 6, 1993
    Inventor: Lien-Ker Chang