Patents by Inventor Andrew Tsai

Andrew Tsai 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).

  • Plate spring for mounting a magnetic stripe card reader's magnetic head
    Patent number: 5270523
    Abstract: For mounting a magnetic stripe card reader's magnetic head, a plate spring made from a thin metal sheet having two opposite fixing wings bilaterally extending outwards from a square frame and longitudinally aligned with each other, wherein said square frame has two raised portions on a bottom edge thereof longitudinally aligned with the center line of said two opposite fixing wings and stopped against a magnetic head held therein. By means of a line contact, the magnetic head is automatically rotated to the best reading position against a magnetic stripe card to be read.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: December 14, 1993
    Assignee: Uniform Industrial Corp.
    Inventors: Yeng-Ming Chang, Andrew Tsai