Patents by Inventor Grant S. Chapman

Grant S. Chapman 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).

  • Reusable gripper/stabilizer jig for construction anchor bolt
    Patent number: 6431517
    Abstract: A releasable jig for positioning and stabilizing while properly orienting an anchor bolt during construction where such a bolt is placed in wet, curing concrete. The jig includes a tube-like portion which is slightly tapered to effect a friction grip on such a bolt, and this tube-like portion includes a slot-like opening which exposes the outer, upper end extremity of a bolt so that the position of this end extremity can clearly be seen during installation.
    Type: Grant
    Filed: October 5, 2000
    Date of Patent: August 13, 2002
    Inventor: Grant S. Chapman