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US 5,149,044 AGranted
Cap shoe
AssigneeBochumer Eisenhutte Heintzmann GmbH & Co. KG
InventorsWerner Mennekes, Rudi Podjadtke
Life of this patent
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Abstract
A cap shoe for connecting a mine prop to a head tree or cap in the form of a U-shaped girder whose U shanks have corrugations extending the full width thereof is engageable by complementary formations on the flanges of the cap or head tree which is received in the shoe. The latter is welded to the mine prop.
Claims6
A mine support assembly, comprising:
- a mine prop having an end;
- a cap tree supported by the mine prop;
- and
- a cap shoe connecting said cap tree with said end of said mine prop, said cap shoe being formed as a die-shaped U-shaped elongated member having a base plate adapted to be affixed to said mine prop and a pair of generally parallel spaced-apart shanks extending orthogonally to said base plate all along the base plate and unitary therewith, said shanks being formed with inwardly projecting, longitudinally spaced corrugations elongated in directions perpendicular to said base plate and formfittingly engageable in complementary formations of said head tree.
1 more element
Dependencies are inferred from the claim text.