Patents by Inventor Kuang-Yung Tien

Kuang-Yung Tien 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).

  • Wrench socket
    Patent number: 4646594
    Abstract: A wrench for square and hexagonal nut fasteners having a peripherally closed socket defined by eight notches of right angles for reception of the driving head, the said notches having a square opening of four notches equally spaced about its periphery and sized for engagement with the square nut or bolt, and a hexagonal opening of six notches of right angles with planar surfaces and engaging surfaces being separately sized for engagement with the hexagonal nuts or bolts at a maximum 5% difference of size to each other.
    Type: Grant
    Filed: August 8, 1984
    Date of Patent: March 3, 1987
    Inventor: Kuang-Yung Tien