Patents by Inventor Bradley J. Tupper

Bradley J. Tupper 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).

  • Protective roll guard for clearing obstacles from caster wheels
    Patent number: 5873144
    Abstract: A one-piece roll guard (10) having two half segments (12, 14) connected by an integral hinge (16) for protecting a caster (100) wheel by clearing obstacles away from its rolling path. The two segments of the roll guard (10) are closed and secured together around the caster wheel with a locking tab (18a) and matching locking slot (18b) integrally formed in the two segments. The roll guard is formed with a weighted lower lip (26) to improve stability by lowering the center of gravity of the roll guard (10).
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: February 23, 1999
    Assignee: Innovative Research Labs, Inc.
    Inventors: Bradley J. Tupper, James Benson