Mine roof supports

Details Mine roof supports Mine roof supports

1994-03-09

1995-06-13

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

33 1N, 33354, 405291, 405302, E02D 2300

Patent

active

054236380

ABSTRACT:
A mine roof support having means for monitoring the angles made by the canopy 11 and the base 10 with respect to a datum. The angular information may be gathered in a number of different ways and the information used to control subsequent movements of the support.

REFERENCES:
patent: 2613449 (1952-10-01), Eisley
patent: 3672174 (1972-06-01), Van Hippel
patent: 3945128 (1976-03-01), Weiss
patent: 4156971 (1979-06-01), Currie et al.
patent: 4222686 (1980-09-01), Bell et al.
patent: 4887935 (1989-12-01), Hoppers et al.
patent: 4913499 (1990-04-01), Smart

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