Articulated mine door opening mechanism

Details Articulated mine door opening mechanism Articulated mine door opening mechanism

E - Fixed Constructions

05

F

E05F 15/00 (2006.01) E21F 17/00 (2006.01)

Patent

CA 2731472

A mine door system comprising at least one mine door leaf hinged at one side to a door frame defining an entry. The system includes an articulated door-moving mechanism that articulates between a first configuration in which the mechanism applies a relatively small door-moving force to the door leaf to move it at a first speed and a second configuration in which the mechanism applies a larger door--moving force to the door leaf to move it at a second speed less than the first speed. A related method is also disclosed.

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