Mine roof support
AssigneeBochumer Eisenhutte Heintzmann GmbH & Co. KG
InventorAlfred Bollmann
Life of this patent
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Abstract
A mine roof support has a base, a supporting prop extending upwardly from the base, an elongated roof-supporting element having one portion supported by the supporting prop and another portion telescopable relative to the one portion toward a mine face and having a free end formed as a housing with a width corresponding to the width of the one portion, and a thrust prop arranged to support the free end section of the telescopable portion of the roof-supporting element and having a roof-side end section which is forcedly displaceable in the housing in direction of elongation of a mine and pivotable in a substantially vertical plane about an axle arranged in the housing.
Claims15
A mine roof support, comprising a base;
- a supporting prop extending upwardly from said base;
- an elongated roof-supporting element having one longitudinal portion which is supported on said base by said supporting prop and has a predetermined width, said roof-supporting element having another longitudinal portion which is telescopable relative to said one portion toward a mine face, said telescopable portion of said roof-supporting element having at least a free end section which is formed as a housing having a width, in direction of elongation of a mine, substantially corresponding to the width of said one portion supported by said supporting prop;
- and a thrust prop arranged to support said free end section of said telescopable portion of said roof-supporting element, said thrust prop having a roof-side end section which is forcedly displaceable in said housing in direction of elongation of a mine and pivotable in a substantially vertical plane about an axle arranged in said housing.
Dependencies are inferred from the claim text.