Patents by Inventor Tang-Yang Cheng

Tang-Yang Cheng 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).

  • PU foam rubber fluid applicator
    Patent number: 7000805
    Abstract: A PU foam rubber fluid applicator includes a handle, the handle having a receptacle adapted to accommodate a PU foam rubber can, a nozzle connected to the valve tube of the loaded PU foam rubber can, a lever pivoted to the receptacle and supported on a return spring and controlled by one finger of the user's hand holding the handle to lift the nozzle and to further open the valve tube of the PU foam rubber can, and a retaining block pivoted to the receptacle and forced by a spring member to lock the PU foam rubber can.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: February 21, 2006
    Inventors: Chin-Ta Wu, Tang-Yang Cheng