Patents by Inventor Donald B. Lupton

Donald B. Lupton 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).

  • Laminate
    Patent number: 4507347
    Abstract: A laminate useful in roofing and wall cladding applications is of two or more layers and comprises a decorative element 12, an optional strength giving element 16, a vapor barrier element 14 and an anti-wrinkle element 18. The latter is preferably a corrugated PVC sheet.
    Type: Grant
    Filed: March 18, 1983
    Date of Patent: March 26, 1985
    Inventor: Donald B. Lupton
  • Tube forming apparatus and method
    Patent number: 4282053
    Abstract: Apparatus for forming a tube, preferably of flexible thermally insulating material, comprises a cutting head 14 with a pair of concentric cutting edge 16, 18 which cooperates with a presser head 28 to cut rings 50 of material from a sheet 48 presented to the cutting head. The rings are stacked up on a guide bar 32 and sprayed with a coating composition to consolidate them into a tube which may be collected on a take-up drum in a continuous manner.
    Type: Grant
    Filed: August 27, 1979
    Date of Patent: August 4, 1981
    Assignee: PH Thermal Products Limited
    Inventors: Donald B. Lupton, Kenneth Lawrence