Patents by Inventor Ronald L. Marchal

Ronald L. Marchal 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).

  • Apparatus and method for automatically making a duplicate key
    Patent number: 4741652
    Abstract: A key duplicating apparatus having automatic key clamping mechanisms for a master key and a key blank, a circular key follower and a key cutter mounted on a pivoting base that pivots and slides on a support shaft, and a mounting plate for mounting the clamping mechanisms and the support shaft. The apparatus is preferably automatically controlled by a microprocessing circuit. Also, the circular key follower is eccentrically mounted on a mounting shaft for adjustment of the depth of cutting of the key blank.
    Type: Grant
    Filed: November 28, 1986
    Date of Patent: May 3, 1988
    Inventor: Ronald L. Marchal
  • Apparatus and method for automatically making a duplicate key
    Patent number: 4666351
    Abstract: A key duplicating apparatus having automatic key clamping mechanisms for a master key and a key blank, a circular key follower and a key cutter mounted on a pivoting base that pivots and slides on a support shaft, and a mounting plate for mounting the clamping mechanisms and the support shaft. The apparatus is preferably automatically controlled by a microprocessing circuit. Also, the circular key follower is eccentrically mounted on a mounting shaft for adjustment of the depth of cutting of the key blank.
    Type: Grant
    Filed: August 7, 1985
    Date of Patent: May 19, 1987
    Inventor: Ronald L. Marchal