Mine-roof supports

Details Mine-roof supports Mine-roof supports

E - Fixed Constructions

21

D

61/67

E21D 15/14 (2006.01) E21D 15/51 (2006.01) E21D 23/00 (2006.01) E21D 23/06 (2006.01)

Patent

CA 1165572

DH.2486 C ABSTRACT OF THE DISCLOSURE "MINE-ROOF SUPPORTS" A mine-roof support has a roof-engageable member and two cantilevers, movable by rams, between housed positions substantially within the member and extended positions in which one cantilever projects from one end of the member and the other cantilever projects from the other end of the member. In order to reduce the size of the support, the rams are inclined to the axis of the roof-engageable member, one ram being to one side of that axis and the other ram being to the other side of that axis.

407538

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