Patents by Inventor Robert L. Warnke

Robert L. Warnke 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).

  • Machine tool power speed changer
    Patent number: 5389861
    Abstract: A retrofit power accessory for a turret mill provides a motor drive for changing machine tool speed, replacing a handwheel. A frame is attached to the mill by a pair of adjustable brackets which accommodate various models of mills. The frame carries a spider coupling which attaches to the rotatable machine shaft formerly holding the hand wheel. The spider coupling is driven by a gear motor on the frame through a timing belt and timing gears to positively drive the machine shaft. A manual switch controls the motor in either direction to effect the desired machine tool speed change. A rotary knob is also coupled to the spider coupling to allow manual intervention.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: February 14, 1995
    Inventor: Robert L. Warnke, III
  • Coal ash separator
    Patent number: D285831
    Type: Grant
    Filed: January 16, 1984
    Date of Patent: September 23, 1986
    Inventor: Robert L. Warnke