Patents by Inventor Fredrick A. Nehring

Fredrick A. Nehring 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).

  • Thermoformer for forming and heat bonding a thermoplastic sheet to a substrate
    Patent number: 6648043
    Abstract: A thermoforming apparatus for forming sheets of sheet plastic onto a substrate in which a retractable substrate heater is able to be positioned over a substrate loaded into the press and energized while a plastic sheet is being heated in an oven included in the thermoformer apparatus. The plastic sheets are cut from a strip pulled from a roll of sheet material, the roll supported for side to side movement and driven by a servomotor responsive to error signals generated by a strip edge sensor to compensate for wandering of a strip edge to thereby insure accurate location of plastic sheets cut from the unwound strip.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: November 18, 2003
    Assignee: Brown Machine, LLC.
    Inventors: James H. Kundinger, Victor L. Chun, Fredrick A. Nehring