Patents by Inventor Craig R. Janssen

Craig R. Janssen 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).

  • Method for smoothing wallboard tape joints
    Patent number: 4399170
    Abstract: A finishing tool is used to smooth tape joints of interior walls and ceilings constructed of plasterboard or drywall. The tool includes a handle, a resilient polyester foam pad, and a wettable abrasive surface of short, stiff coarse nylon fibers bonded to the resilient foam pad so that they are oriented perpendicular to the surface of the foam pad. In use, the abrasive surface is wetted, and then is moved over the surface of the tape joint to moisten the joint cement. The tool is then moved in a scrubbing-type movement to work the joint cement to a creamy consistency. The surface of the joint cement is then smoothed by stroking the tool along the length of the joint.
    Type: Grant
    Filed: September 13, 1982
    Date of Patent: August 16, 1983
    Assignee: Padco, Inc.
    Inventor: Craig R. Janssen
  • Finishing tool for smoothing wallboard tape joints
    Patent number: 4391013
    Abstract: A finishing tool is used to smooth tape joints of interior walls and ceilings constructed of plaster-board or drywall. The tool includes a handle, a resilient polyester foam pad, and a wettable abrasive surface of short, stiff coarse nylon fibers bonded to the resilient foam pad so that they are oriented perpendicular to the surface of the foam pad. In use, the abrasive surface is wetted, and then is moved over the surface of the tape joint to moisten the joint cement. The tool is then moved in a scrubbing-type movement to work the joint cement to a creamy consistency. The surface of the joint cement is then smoothed by stroking the tool along the length of the joint.
    Type: Grant
    Filed: February 9, 1981
    Date of Patent: July 5, 1983
    Assignee: Padco, Inc.
    Inventor: Craig R. Janssen