Patents by Inventor Lothar Frank

Lothar Frank 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).

  • Extruded plastics material hollow profiled strip for window frames, window frames produced from this type of profiled strips and method for the production of a window frame of this type
    Patent number: 4492063
    Abstract: The invention relates to a glass fibre-reinforced, extruded plastics material hollow profiled strip for the production of window frames, glass doors, or the like. In order to be able to butt-weld profiled strips of this type together when producing the frame and to ensure a reliable bonding between the glass fibres and the plastics material of the profiled strips a synthetic resin is used as the bonding agent which causes this bonding, which synthetic resin has thermoplastic or thermoelastic properties and thus enables the glass fibres to be deflected during butt-welding and pressing together of the ends of the frame pieces.
    Type: Grant
    Filed: March 31, 1982
    Date of Patent: January 8, 1985
    Assignee: Schock & Co. GmbH
    Inventors: Karl Schock, Lothar Frank
  • Sectional construction strip, e.g. for the production of window frames
    Patent number: 4281492
    Abstract: The strip comprises a tubular section of thermoplastic material, e.g. PVC, and a fill comprising a matrix of methylmethacrylate with silicate spherules as a filler, reinforced by glass filaments under tension. In production, cold methylmethacrylate is pressed in the extruded section while it is still hot.
    Type: Grant
    Filed: June 19, 1979
    Date of Patent: August 4, 1981
    Assignee: Schock & Co.
    Inventors: Karl Schock, Lothar Frank