Patents by Inventor John Kallenborn

John Kallenborn 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 of cutting of glass strand and product produced thereby
    Patent number: 4158555
    Abstract: A method of cutting glass fiber strands is disclosed wherein said strands are driven across the beam of an interruptable laser. The laser beam melts the strand at each pulse of the beam cutting the strand into short lengths. The cut strands can be immediately collected and packaged or can be further subjected to a drying procedure prior to packaging. The strands formed by this method have fused and comparitively even ends as opposed to the ragged uneven ends of mechanically chopped glass strands.
    Type: Grant
    Filed: December 19, 1975
    Date of Patent: June 19, 1979
    Assignee: PPG Industries, Inc.
    Inventor: John Kallenborn
  • Method and apparatus for collecting strand material
    Patent number: 4065065
    Abstract: A method and apparatus are disclosed for collecting strand material, and especially glass strands. The method comprises oscillating the mid point of a rotating surface on which the strand material is collected through an included angle from the horizontal and oscillating the rotating surface in the vertical direction to thereby maintain a constant distance between the source of the strand material and the face of the forming package of strand material on the rotating surface. Suitable apparatus for achieving this result is also disclosed.
    Type: Grant
    Filed: January 7, 1977
    Date of Patent: December 27, 1977
    Assignee: PPG Industries, Inc.
    Inventor: John Kallenborn
  • Hollow glass filaments sealed at both ends their production and their use as matrix reinforcing materials
    Patent number: 4039718
    Abstract: Novel glass fiber strands of relatively short lengths are disclosed in which the strands are formed of a consolidated bundle of glass filaments. The filaments making up the consolidated strand have external diameters of 0.0003 to 0.003 inch (0.0016 to 0.076 millimeters) and 10 to 65 percent of their volume is hollow. The filaments are further sealed at each of their ends in the short lengths of consolidated strand.
    Type: Grant
    Filed: December 19, 1975
    Date of Patent: August 2, 1977
    Assignee: PPG Industries, Inc.
    Inventor: John Kallenborn