Patents by Inventor John D. Todhunter

John D. Todhunter 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).

  • Flexible mobile conveyor
    Patent number: 4256213
    Abstract: A flexible mobile conveyor is provided which is particularly useful in deep mining operations. The conveyor comprises a plurality of carriages, a pair of wheels supporting each carriage, an endless conveyor mounted on each carriage, drive means on each carriage engaging and driving the conveyor means, a swivel connection between each pair of carriages permitting generally universal movement between adjacent carriages and a main power source on one of said carriages, driving the supporting wheels.
    Type: Grant
    Filed: September 14, 1977
    Date of Patent: March 17, 1981
    Assignees: Gordon A. Brewer, Eugene F. Buell
    Inventors: Howard A. Shaw, John D. Todhunter
  • Flexible mobile conveyor
    Patent number: 3974907
    Abstract: A flexible mobile conveyor is provided which is particularly useful in deep mining operations. The conveyor comprises a plurality of carriages, a pair of wheels supporting each carriage, an endless conveyor mounted on each carriage, drive means on each carriage engaging and driving the conveyor means, a swivel connection between each pair of carriages permitting generally universal movement between adjacent carriages and a main power source on one of said carriages, driving the supporting wheels.
    Type: Grant
    Filed: October 29, 1971
    Date of Patent: August 17, 1976
    Assignees: Gordon A. Brewer, Eugene F. Buell
    Inventors: Howard A. Shaw, John D. Todhunter