Mine roof supports

Details Mine roof supports Mine roof supports

E - Fixed Constructions

21

D

61/67

E21D 15/44 (2006.01) E21D 15/48 (2006.01) E21D 23/04 (2006.01)

Patent

CA 1111265

Abstract of the Disclosure A mine roof support comprises a plurality of chock legs, each being mounted at its lower end in a base means of the support, with co-operating and contacting convex/concave surfaces on the chock leg and base means respectively, and the chock leg being provided at a distance spaced upwardly from the contacting surfaces with an exterior abutment attached to a spacer tube extending from, and attached to, the end cap of the chock leg remote from the contacting convex/concave surfaces, the base means providing a co-operating abutment such that contact between the two abutments prevents withdrawal of the chock leg from the base means.

340106

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