Patents by Inventor Andrew G. Gavrun, III

Andrew G. Gavrun, III 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).

  • Punch and die set and method adapted to effect parting between adjacent sections of a workpiece
    Patent number: 4981058
    Abstract: An apparatus and a method are disclosed, in which a shear and die set is adapted to be used in a numerically-controlled turret punch press for separating adjacent portions of a workpiece along predetermined parting lines, the shear and die set having a lower shearing or cutting edge on a vertical side of the shear portion of said set which is reciprocated vertically in shearing proximity to an upper cutting or shearing edge of a vertical wall of the die portion of said set, so that only a partial shear is effected for any reciprocation, and advancing the workpiece during the reciprocation so that a stepwise cut is effected along the entire length of said predetermined parting line and separation of the workpiece along said predetermined parting line is obtained.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: January 1, 1991
    Assignee: Lear Siegler, Inc.
    Inventor: Andrew G. Gavrun, III