Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Patent
1978-10-04
1980-01-15
Taylor, Dennis L.
Hydraulic and earth engineering
Earth treatment or control
Shoring, bracing, or cave-in prevention
E21D 1544
Patent
active
041837002
ABSTRACT:
A walking mine support includes a roadway support unit and a face-gallery support unit laterally of the same. The two units are linked by one or more four-pivot couplings whose members can tilt both lengthwise and transversely of the elongation of the roadway and permit walking movements of the units with reference to one another without interfering with proper support of either the roadway or the face-gallery.
REFERENCES:
patent: 3447328 (1969-06-01), Schuermann
Bohnes Karlheinz
Kunzer Heinz
Marr Peter
von Klinggraff Gerhard
Bochumer Eisenhutte Heintzmann GmbH
Striker Michael J.
Taylor Dennis L.
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