Patents by Inventor Stephen D. Buchanan

Stephen D. Buchanan 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).

  • Apparatus for handling waste including rubber tires
    Patent number: 4142688
    Abstract: Waste such as combustible trash and prime garbage is mixed with rubber tires and shredded together to produce a compacted and combustible output product which can be used as a fuel or incinerated for further compacting.The apparatus involves interengaging rotary feeder-cutter wheels mounted on counterrotating shafts to pull materials through a feed path while shredding with the aid of shredder blades interspersed between the wheels. Feeding, mixing and conveying techniques through one or more shredder stages provide for attainment of high speed feed rates and handling of some degree solid debris such as steel belts in tires.
    Type: Grant
    Filed: August 24, 1977
    Date of Patent: March 6, 1979
    Inventors: Albert O. Johnson, William E. Holiman, Stephen D. Buchanan
  • Methods of handling waste
    Patent number: 4081143
    Abstract: Waste such as combustible trash and prime garbage is mixed with rubber tires and shredded together to produce a compacted and combustible output product which can be used as a fuel or incinerated for further compacting.The process involves interengaging rotary feeder-cutter wheels mounted on counterrotating shafts to pull materials through a feed path while shredding with the aid of shredder blades interspersed between the wheels. Feeding, mixing and conveying techniques through one or more shredder stages provide for attainment of high speed feed rates and handling of some degree solid debris such as steel belts in tires.
    Type: Grant
    Filed: February 18, 1977
    Date of Patent: March 28, 1978
    Assignee: Tire-Gator, Inc.
    Inventors: Albert O. Johnson, William E. Holiman, Stephen D. Buchanan