Parachute stopping for mine ventilation use

Details Parachute stopping for mine ventilation use Parachute stopping for mine ventilation use

1975-10-31

1976-08-31

Wayner, William E.

Mining or in situ disintegration of hard material

Processes

Forming blocks

61 45R, 299 12, 299 19, 169 64, 244142, E21F 1700, E21F 114

Patent

active

039773124

ABSTRACT:
A parachute-type mine stopping used in ventilation control comprises a parachute-like canopy suspended from straps or lines secured to a roof bolt or the like. After the lines are so secured, the stopping is erected by merely lifting the upper edge of the canopy into the airstream in the passage, the airstream causing the canopy to simply "pop" into place. In a preferred embodiment, a skirt is sewn to the peripheral edge of the canopy to improve sealing.

REFERENCES:
patent: 2947239 (1960-08-01), Burgess
patent: 3006267 (1961-10-01), Hangis
patent: 3948057 (1976-04-01), Hill

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