Support column for use in a mine
AssigneeBochumer Eisenhutte Heintzmann GmbH & Co. KG
InventorsLothar Domanski, Rudi Podjadtke
Life of this patent
Estimating the term…
Abstract
An adjustable column for use between ceiling and floor surfaces of a mine has an outer tube having an outer end and an inner end and an inner tube having an inner end in the outer tube at the inner end thereof and an outer end. The tubes are coaxial to an upright axis and an external screwthread on the outer-tube inner end fits with an inner screwthread on the inner-tube inner end so that the tubes can be screwed relative to each other to change the axial length of the column. One of the outer ends is operatively braced against one of the surfaces and the other outer end is spaced from the other of the surfaces. A resiliently compressible support element is braced axially between the other outer end and the other surface.
Claims8
An adjustable column for use between ceiling and floor surfaces of a mine, the column comprising:
- an outer tube having an outer end and an inner end;
- an inner tube having an inner end in the outer tube at the inner end thereof and an outer end, the tubes being coaxial to an upright axis;
- an external screwthread on the outer-tube inner end;
- an inner screwthread on the inner-tube inner end engaging the external screwthread, whereby the tubes can be screwed relative to each other to change the axial length of the column, one of the outer ends being operatively braced against one of the surfaces and the other outer end being spaced from the other of the surfaces and formed with a concave seat turned toward the other surface;
- an elastically deformable plate sitting on the seat, concave away from the column, axially engaging the other surface, and braced axially between the seat of the other outer end and the other surface;
- and
- a body of compressible material in the plate and engaging the other surface.
An adjustable column for use between ceiling and floor surfaces of a mine, the column comprising:
- an outer tube having an outer end and an inner end;
- an inner tube having an inner end in the outer tube at the inner end thereof and an outer end, the tubes being coaxial to an upright axis;
- an external screwthread on the outer-tube inner end;
- an inner screwthread on the inner-tube inner end engaging the external screwthread, whereby the tubes can be screwed relative to each other to change the axial length of the column, one of the outer ends being operatively braced against one of the surfaces and the other outer end being formed with an axially outwardly concave seat and being spaced from the other of the surfaces;
- an axially resiliently compressible support disk braced axially between the other outer end and the other surface and resting complementarily on the seat, the disk being concave toward the one surface and forming therewith a chamber;
- and
- a mass of resiliently deformable material filling the chamber.
Dependencies are inferred from the claim text.