Patents by Inventor Donald C. Cheesman

Donald C. Cheesman 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: 5645229
    Abstract: Method of pulping of waste papers is disclosed in this invention which includes a water supply and twin tube cylinder tanks mounted horizontally, and a shaft extending inside of the tanks, and flinger arms attached to the shafts, and the shafts rotate, being driven by electric motors, to pulp the waste paper in a water suspension, and the pulp slurry screened through a bank or plurality of perforated troughs and a perforated screw conveyor mounted in the perforated trough.
    Type: Grant
    Filed: September 26, 1996
    Date of Patent: July 8, 1997
    Inventors: Mark W. Spencer, Donald C. Cheesman
  • Patent number: 5593098
    Abstract: Pulping of waste paper is accomplished by the apparatus of this invention which includes a water supply and twin tube cylinder tanks mounted horizontally, and a shaft extending inside of the tanks, and flinger arms attached to the shafts, and the shafts rotate, being driven by electric motors, to pulp the waste paper in a water suspension, and the pulp slurry screened through a bank or plurality of perforated troughs and a perforated screw conveyor mounted in the perforated trough.
    Type: Grant
    Filed: June 7, 1996
    Date of Patent: January 14, 1997
    Inventors: Mark W. Spencer, Donald C. Cheesman
  • Patent number: 5556041
    Abstract: Disclosure is made of baled material disintegrator, or debaler or pull apart apparatus having a bale conveyor and conveyor chute and at the outlet of the conveyor, a multi picker wheel debaler cartridge suspended on a swing shaft or axle, and hydraulic piston means connected to the debaler cartridge to swing the cartridge to and from the bale to be disintegrated or debaled, and further disclosure is made of removal from a bale of material such as paper, the bale binding wire scrap on breaking of the wire by action of debaler cartridge picker wheels, and a scraper bar with tooth segments extending to the tooth wheel shafts and the teeth of the scraper bar straddle the picker tooth wheels to remove the scrap wire from the shafts of the picker cartridge and collection of the cut bale binding wire on a magnet mount bank, set on an incline at the outlet of the debaler cartridge, and the magnet bank overlaid by an endless conveyor belt, and removal of the binding wire scrap, or other tramp iron from the disintegrat
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: September 17, 1996
    Inventors: Donald C. Cheesman, Mark W. Spencer