Yieldable roof support system

Details Yieldable roof support system Yieldable roof support system

E - Fixed Constructions

04

G

E04G 25/06 (2006.01) E21D 15/22 (2006.01) E21D 15/24 (2006.01)

Patent

CA 2059575

ABSTRACT OF THE DISCLOSURE YIELDABLE ROOF SUPPORT SYSTEM A support includes a base member having an open end and a hollow interior, a forcing member having an end extending through the open end of the base member into the hollow interior thereof and having threads thereon and a mandrel or sliding nut capable of engaging the threads of the forcing member at an adjustable position and providing an interfering relationship between the base and forc- ing members as a compressive load is applied there- to. The support is particularly adapted for use in supporting the roof of a mine.

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