Patents by Inventor Mark D. Scherer

Mark D. Scherer 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).

  • Clamp device for a ladder adjustment apparatus
    Patent number: 5553963
    Abstract: A clamp device 10 including both fixed 10" and moveable versions 10' attached to a portion of a ladder adjustment apparatus 110 for engaging the rungs 101 of a ladder 100. The device 10 comprises a lower generally C-shaped jaw member 20 having a recess 26 to receive an adapter member 50 to grasp the rung of the ladder 100. The lower jaw member 20 is pivotally connected to a portion of the ladder adjustment apparatus 110 to accommodate the angular orientation of the adjustment apparatus 110 relative to the rungs 101 of the ladder 110.
    Type: Grant
    Filed: December 8, 1994
    Date of Patent: September 10, 1996
    Inventors: Thomas A. Hoy, Mark D. Scherer
  • Ladder adjustment apparatus
    Patent number: 4984655
    Abstract: A ladder adjustment apparatus (10) which is designed to be secured to the rungs (101) of a ladder (100) whereby the apparatus (10) may be laterally shifted on the rungs (101) to position the apparatus (10) adjacent either leg (102) of the ladder without the need for physically detaching the apparatus (10) from the ladder (100).
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: January 15, 1991
    Inventors: Mark D. Scherer, Thomas A. Hoy