Mine support having a linearly moveable and/or pivoting end...

Details Mine support having a linearly moveable and/or pivoting end... Mine support having a linearly moveable and/or pivoting end...

E - Fixed Constructions

21

D

E21D 15/24 (2006.01)

Patent

CA 2627560

A mine support yieldable prop includes a threaded shaft rotatably mounted in an end of the prop to move into and out of the prop end to move a bearing plate toward or away from a mine roof, and/or a bearing plate pivotally mounted to the end of the prop to level the prop with uneven mine roofs.

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