Patents by Inventor Gerald L. Dollinger

Gerald L. Dollinger 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).

  • Method and apparatus for automatically controlling a mining machine
    Patent number: 5310249
    Abstract: Mining apparatus is disclosed in which a cutting wheel supporting a plurality of roller-cutters rotates about a horizontal axis and is supported on a slewing boom for cutting a tunnel with a flat floor and roof and elliptical walls as it slews across a mining face. The slewing boom is supported on a main beam assembly, the front end of which rests on powered crawler tracks and the rear end of which passes through a gripper assembly which may be clamped between the floor and roof of the tunnel, and against which the main beam assembly may be urged forward for engaging the roller-cutters with the mining face. A preload crawler is urged against the roof of the tunnel above the powered crawler tracks to locate the main beam assembly rigidly relative to the tunnel such that the roller-cutters may cut the rock in the mining face with minimal loss of cutting force due to vibration.
    Type: Grant
    Filed: March 8, 1993
    Date of Patent: May 10, 1994
    Assignee: Z C Mines PTY LTD
    Inventors: David B. Sugden, John Turner, Robert J. Boyd, Thomas M. Hartman, Gerald L. Dollinger, John G. Moore
  • Transport apparatus and method of forming same
    Patent number: 5205612
    Abstract: Mining apparatus in which a cutting wheel supporting a plurality of roller-cutters rotates about a horizontal axis and is supported on a slewing boom for cutting a tunnel with a flat floor and roof and elliptical walls as it slews across a mining face. The slewing boom is supported on a main beam assembly, the front end of which rests on powered crawler tracks and the rear end of which passes through a gripper assembly which may be clamped between the floor and roof of the tunnel, and against which the main beam assembly may be urged forward for engaging the roller-cutters with the mining face. A preload crawler is urged against the roof of the tunnel above the powered crawler tracks to locate the main beam assembly rigidly relative to the tunnel such that the roller-cutters may cut the rock in the mining face with minimal loss of cutting force due to vibration.
    Type: Grant
    Filed: May 16, 1991
    Date of Patent: April 27, 1993
    Assignee: Z C Mines Pty. Ltd.
    Inventors: David B. Sugden, John Turner, Robert J. Boyd, Thomas M. Hartman, Gerald L. Dollinger, John G. Moore