Patents by Inventor Daniel W. Boerman

Daniel W. Boerman 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).

  • Vehicle door operating mechanism
    Patent number: 5056847
    Abstract: A vehicle door operating mechanism provides automatic opening and closing of a delivery truck door from within or without the vehicle. A low profile side mounted electric motor operates a closed loop drive means with limit switches assuring proper operation. The motor and drive means cooperate directly with the existing tracking.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: October 15, 1991
    Assignee: Automatic Truck Door, Inc.
    Inventors: Richard L. Stillwell, Christopher G. Bohn, Daniel W. Boerman