Patents Assigned to Yancoal Technology Development PTY Ltd
  • Coal caving cycle
    Patent number: 9068452
    Abstract: A coal caving system (1) including a plurality of shields (3) with canopies (6) which are selectively operated to allow coal to cave onto a rear conveyor (37). In one aspect, the invention provides a shield control method including controlling the shield (3) to automatically open a door (6) associated with a rear canopy of the shield (3) responsive to a position of a shearer of the system.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: June 30, 2015
    Assignee: Yancoal Technology Development PTY Ltd
    Inventors: Maohu Matthew Wang, Steven Chandler