Patents by Inventor Louis J. Franz

Louis J. Franz 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).

  • Patent number: 4375775
    Abstract: A precision stamping press comprises a press head reciprocally mounted upon a bed for movement, along a press axis, towards a fixed position die support which is axially aligned with the press axis. Cooperating die members are removable fastened to the press head and to the die support for stamping sheet metal placed therebetween. The die support is mounted upon one end of an elongated arm which extends transversely away from the press axis. The opposite end of the arm is pivotally connected to the bed. Thus, the die support may be swung, about the arm pivot, out of its press axis aligned position for replacement of its die member, and then swung back into axial alignment with the press axis for stamping use. Screws, which extend parallel to the press axis, releasably fasten the arm to the bed for fixing the position of the die support.
    Type: Grant
    Filed: March 26, 1981
    Date of Patent: March 8, 1983
    Inventor: Louis J. Franz
  • Patent number: 4367970
    Abstract: Die insert lock screws are formed for threaded engagement within corresponding threaded holes formed in a retainer having a socket within which a die part insert is positioned, with a portion of each of the screw heads normally overlapping the socket and fitted within a groove in the insert. The screw heads each are provided with a circumferentially elongated notch which can be aligned with the adjacent insert surface portion and retaining socket wall portion for disengaging the screw heads from their grooves for thereby unlocking the insert. Each notch is aligned lengthwise, generally perpendicularly to the socket wall so that maximum face to face area contact is provided between the bases of the screw heads and the retainer when the screw heads are tightened against the retainer for locking the insert.
    Type: Grant
    Filed: March 25, 1981
    Date of Patent: January 11, 1983
    Inventor: Louis J. Franz
  • Patent number: 4288902
    Abstract: Die insert lock screws are formed for threaded engagement within corresponding threaded holes formed in a retainer having a socket within which a die part insert is positioned, with a portion of each of the screw heads normally overlapping the socket and fitted within a groove in the insert. The screw heads each are provided with a circumferentially elongated notch which can be aligned with the adjacent insert surface portion and retaining socket wall portion for disengaging the screw heads from their grooves for thereby unlocking the insert. Each notch is aligned lengthwise, generally perpendicularly to the socket wall so that maximum face to face area contact is provided between the bases of the screw heads and the retainer when the screw heads are tightened against the retainer for locking the insert.
    Type: Grant
    Filed: October 5, 1979
    Date of Patent: September 15, 1981
    Inventor: Louis J. Franz