Roof bolt

Details Roof bolt Roof bolt

E - Fixed Constructions

21

D

61/47

E21D 20/02 (2006.01)

Patent

CA 2029742

ABSTRACT OF THE DISCLOSURE A roof bolt which includes two wedge-shaped elements which when moved towards each other from opposite directions cause the anchor arrangement to expand in a direction transverse to the direction of movement. An elongate support member is located with opposite portions parallel to the direction of movement of the wedge-shaped elements. The support member is tensioned when the wedge shaped elements in the hole are forced towards each other in the direction of movement, by a suitable tool from the mouth of the hole.

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