Patents by Inventor Der-Shing Wang

Der-Shing Wang 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).

  • Hose coupling
    Patent number: 5344119
    Abstract: A hose coupling includes a cylindrical member for coupling a faucet, an annular rib formed in the the cylindrical member, a ring element threadedly engaged in the cylindrical member, a packing engaged between the annular rib and the ring element so as to make a water tight seal between the annular rib and the ring element, a tube is slidably engaged in the packing and the ring element and has a bore, one or more holes are formed in the tube and communicated with the bore of the tube, the water is cut off when the holes are blocked and are opened when the holes are disengaged from the packing.
    Type: Grant
    Filed: September 21, 1993
    Date of Patent: September 6, 1994
    Inventor: Der-Shing Wang
  • Picture frame
    Patent number: 5187886
    Abstract: A picture frame including a pair of horizontal bars and a pair of vertical bars each having two end portions, a space formed in each of the end portions of the bars, a coupler disposed in each of the corner areas of the picture frame and including two legs perpendicular with each other and engageable within the spaces of the bars so that the bars can be coupled together by the couplers, and a strip having a hook formed on each end and engageable within the orifices formed in the ribs so that the bars can be coupled together.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: February 23, 1993
    Inventors: Chii-Chong Wu, Der-Shing Wang