Patents Assigned to Drummond Company, Inc.
  • Method for open pit bench mining
    Patent number: 8366201
    Abstract: A bench mining method, particularly useful for open pit bench mining, which employs a combination of bulldozers and transversely movable apron feeders to provide the primary mechanism for removal of overburden.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: February 5, 2013
    Assignee: Drummond Company, Inc.
    Inventors: Garry N. Drummond, Eugene Honeycutt, Harold Gene Anderson
  • METHOD FOR OPEN PIT BENCH MINING
    Publication number: 20100171360
    Abstract: A bench mining method, particularly useful for open pit bench mining, which employs a combination of bulldozers and transversely movable apron feeders to provide the primary mechanism for removal of overburden.
    Type: Application
    Filed: March 22, 2010
    Publication date: July 8, 2010
    Applicant: Drummond Company, Inc.
    Inventors: Garry N. Drummond, Eugene Honeycutt, Harold Gene Anderson
  • Method and apparatus for open pit bench mining
    Patent number: 7726465
    Abstract: A bench mining system and mining method, particularly useful for open pit bench mining, employs a combination of bulldozers and transversely movable apron feeders to provide the primary mechanism for removal of overburden. The apron feeders are preferably equipped with a self-cleaning arrangement to facilitate continuous operation without undue stoppages.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: June 1, 2010
    Assignee: Drummond Company, Inc.
    Inventors: Garry N. Drummond, Eugene Honeycutt, Harold Gene Anderson
  • Method and Apparatus for Open Pit Bench Mining
    Publication number: 20080093911
    Abstract: A bench mining system and mining method, particularly useful for open pit bench mining, employs a combination of bulldozers and transversely movable apron feeders to provide the primary mechanism for removal of overburden. The apron feeders are preferably equipped with a self-cleaning arrangement to facilitate continuous operation without undue stoppages.
    Type: Application
    Filed: September 9, 2005
    Publication date: April 24, 2008
    Applicant: DRUMMOND COMPANY, INC.
    Inventors: Garry Drummond, Eugene Honeycutt, Harold Anderson