Yielding roof bolting

Details Yielding roof bolting Yielding roof bolting

E - Fixed Constructions

21

D

E21D 21/00 (2006.01) F16B 2/04 (2006.01)

Patent

CA 2132536

- 11 - YIELDING ROOF BOLTING S u m m a r y The yielding roof bolting contains a strut in the shape of a pipe forming a capacity (2) liable to ex- panding with an axial crease in the cavity of which there is a metallic rod (1).

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