Patents by Inventor Robert D. Claassen

Robert D. Claassen 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: 5597156
    Abstract: A modular conveyor system for flat folded product includes a generally trapezoidal central drive unit having an upper endless belt conveyor which extends at an obtuse angle to first and second edges thereof. The central drive unit includes a drive motor for driving its endless belt conveyor and further includes first and second output pulleys. First and second auxiliary driven units each have a substantially rectangular frame which supports an endless belt conveyor where each endless belt conveyor is driven by an input pulley coupled to the first and second output pulleys respectively. The three units may be locked together in various configurations to form a deserter, a bump turn or a lateral realigner.
    Type: Grant
    Filed: November 3, 1994
    Date of Patent: January 28, 1997
    Assignee: MasterFlo Technology, Inc.
    Inventor: Robert D. Claassen
  • Patent number: 4741414
    Abstract: A pallet lift apparatus includes a substantially U-shaped enclosure having inner and outer walls and a lift cradle suspended inside the enclosure for supporting a wooden pallet or other loading platform. The cradle may be moved to a convenient vertical height by a hydraulic scissor lift for loading so that workers may stack the pallet without the bending and stooping that frequently causes low back pain.
    Type: Grant
    Filed: March 13, 1987
    Date of Patent: May 3, 1988
    Inventor: Robert D. Claassen