Mine roof support equipment

Details Mine roof support equipment Mine roof support equipment

1974-01-29

1976-09-07

Shapiro, Jacob

61 85, E01G 300

Patent

active

039786757

ABSTRACT:
Roof support equipment for a mining machine comprises a canopy supporting plurality of deformable, inflatable bags which can be temporarily deflated to allow advance of the equipment. The canopy is mounted on a movable base which may be constituted by the mining machine.

REFERENCES:
patent: 540306 (1895-06-01), Fry
patent: 2716025 (1955-08-01), Malloy et al.
patent: 3250078 (1966-05-01), Kemper
patent: 3387892 (1968-06-01), Fischer et al.
patent: 3508408 (1970-04-01), LeJeune
patent: 3613383 (1971-10-01), Fiske
patent: 3788087 (1974-01-01), Patin
patent: 3823566 (1974-07-01), Handewith

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