Patents by Inventor Bret Edward Leisemann

Bret Edward Leisemann 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 of longwall panel development
    Patent number: 6460937
    Abstract: A method of roadway development for longwall mining The method includes using a continuous mining machine (100) from which there rearwardly extends a conveyor (102). As the machine (100) progresses to form a road, the conveyor (102) extends. At the rear extremity of the conveyor (102) a roadway development auger mining machine (103) receives mined material from the conveyor (102) and delivers it to a further conveyor (104). A transverse auger (106) also conveys material from the parallel roadway to the machine (103). Mined material is delivered to the auger (106) by a further machine (101) and conveyor (107).
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: October 8, 2002
    Assignee: Cutting Edge Technology Pty Ltd.
    Inventors: Peter Kenneth Seear, Bret Edward Leisemann
  • Method of mining
    Publication number: 20010006304
    Abstract: A method of roadway development for longwall mining. The method includes using a continuous mining machine (100) from which there rearwardly extends a conveyor (102). As the machine (100) progresses to form a road, the conveyor (102) extends. At the rear extremity of the conveyor (102) a roadway development auger mining machine (103) receives mined material from the conveyor (102) and delivers it to a further conveyor (104). A transverse auger (106) also conveys material from the parallel roadway to the machine (103). Mined material is delivered to the auger (106) by a further machine (101) and conveyor (107).
    Type: Application
    Filed: December 18, 2000
    Publication date: July 5, 2001
    Applicant: CUTTING EDGE TECHNOLOGY PTY LTD
    Inventors: Peter Kenneth Seear, Bret Edward Leisemann
  • Method and apparatus for highwall mining
    Patent number: 6027175
    Abstract: A method of highwall mining, the method includes providing a continuous miner (11) connected to a car train (12) extending to a launch vehicle (13). As the miner (11) progresses down an inclined mine tunnel (15) additional cars are added to the train (12) at the launch vehicle (13). The launch (13) applies a force to the end car so that the car adjacent the mine (11) provides a reaction force for the miner (11).
    Type: Grant
    Filed: November 29, 1996
    Date of Patent: February 22, 2000
    Assignee: Cutting Edge Technology Pty Ltd.
    Inventors: Peter Kenneth Seear, Bret Edward Leisemann