Patents by Inventor Larry Prestenbach

Larry Prestenbach 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).

  • Head and tail sprocket assemblies for a marsh excavator
    Patent number: 6655757
    Abstract: A head sprocket assembly and sprocketless tail roller assembly for a pontoon track drive system wherein the sprocket assembly and tail roller is fitted with a plurality of support rings for straightening the track's elongated cleats attached to a plurality of chains passing lengthwise around the pontoons.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: December 2, 2003
    Inventor: Larry Prestenbach
  • Head and tail sprocket assemblies for a marsh excavator
    Publication number: 20030015919
    Abstract: A head sprocket assembly and sprocketless tail roller assembly for a pontoon track drive system wherein the sprocket assembly and tail roller is fitted with a plurality of support rings for straightening the track's elongated cleats attached to a plurality of chains passing lengthwise around the pontoons.
    Type: Application
    Filed: February 20, 2002
    Publication date: January 23, 2003
    Inventor: Larry Prestenbach
  • Marsh excavator
    Patent number: 6482053
    Abstract: The present invention is a flotation apparatus converting a land excavator for amphibious operation. The conversion package comprises a pair of elongated pontoon assemblies secured to each other in a spaced apart manner by transverse support beams telescopically and detachably connected to transverse sleeves located in each pontoon the beams fitted with a base to support and attach a land excavator in an operational manner. Each pontoon includes an endless track guided around it longitudinally and threaded around a head and tail sprocket assembly, the tail sprocket assembly being inboard and fully protected, driven by a hydraulically motor attached to a fully enclosed internal gear reducer. The endless track, configured with only two chain runs on each pontoon, is attached to a light weight traverse channel cleats A series of polymer guide or wear blocks are also provided, attached to each cleat.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: November 19, 2002
    Inventor: Larry Prestenbach