Patents by Inventor Weldon K. Johnson

Weldon K. Johnson 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).

  • Particulate material transfer system
    Patent number: 4417840
    Abstract: An improved particulate material loading system for transferring particulate material from a storage assembly to a vehicle having a storage bin wherein the material is protected from the outside environment during the transfer. The storage assembly includes a temporary cover which is operatively engagable with the vehicle to protect the storage bin of the vehicle when a hatch door of the vehicle is moved from a closed position to an open position to enable transfer of the material thereto. The vehicle is constructed to slidably receive the temporary cover of the storage assembly.
    Type: Grant
    Filed: April 2, 1981
    Date of Patent: November 29, 1983
    Assignee: Kerr-McGee Coal Corporation
    Inventor: Weldon K. Johnson
  • Particulate material transfer system
    Patent number: 4396339
    Abstract: An improved particulate material loading system for transferring particulate material from a storage assembly to a vehicle having a storage bin wherein the material is protected from the outside environment during the transfer. The storage assembly includes a temporary cover which is operatively engagable with the vehicle to protect the storage bin of the vehicle when a hatch door of the vehicle is moved from a closed position to an open position to enable transfer of the material thereto. The vehicle is constructed to slidably receive the temporary cover of the storage assembly.
    Type: Grant
    Filed: April 2, 1981
    Date of Patent: August 2, 1983
    Assignee: Kerr-McGee Coal Corporation
    Inventor: Weldon K. Johnson
  • Particulate material transfer system
    Patent number: 4290725
    Abstract: An improved particulate material loading system for transferring particulate material from a storage assembly to a vehicle having a storage bin wherein the material is protected from the outside environment during the transfer. The storage assembly includes a temporary cover which is operatively engagable with the vehicle to protect the storage bin of the vehicle when a hatch door of the vehicle is moved from a closed position to an open position to enable transfer of the material thereto. The vehicle is constructed to slidably receive the temporary cover of the storage assembly.
    Type: Grant
    Filed: October 4, 1979
    Date of Patent: September 22, 1981
    Assignee: Kerr-McGee Coal Corporation
    Inventor: Weldon K. Johnson
  • Articulate material transfer system
    Patent number: 4277215
    Abstract: An improved system for automatically transferring particulate material, such as coal, is provided wherein the particulate material is transferred from a railroad car into an underground storage bunker while maintaining the material in a substantially covered or protected condition.
    Type: Grant
    Filed: October 4, 1979
    Date of Patent: July 7, 1981
    Assignee: Kerr-McGee Coal Corporation
    Inventor: Weldon K. Johnson