Mine ventilation control device

Details Mine ventilation control device Mine ventilation control device

1976-04-02

1977-03-01

Capossela, Ronald C.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

61 45R, 277DIG10, 299 12, 299 19, E21F 1700, E21F 114

Patent

active

040096491

ABSTRACT:
The invention relates to a mine stopping for underground mines which may be readily mounted within a mine airway to form a gas-tight seal to control the flow of fresh air to the working face of the mine and the efficient exhaust of dirty gas laden air from the working face. The stopping is typically formed of a flexible, gas impervious, fire resistant sheet material provided with means for mounting the same within the interior of the mine. The mounting means embody inherent characteristics of permitting the main body of sheet material to separate from the mine interior walls upon the occurrence of a certain predetermined pressure difference between the opposing major surfaces of the main body of the stopping as may occur by a blasting or underground explosion. Thereby the main body portion of the stopping is not damaged and may be reused.

REFERENCES:
patent: 2947239 (1960-08-01), Burgess
patent: 3006267 (1961-10-01), Hangis
patent: 3636850 (1972-01-01), Burgess, Jr.
patent: 3863554 (1975-02-01), Boyd
patent: 3948057 (1976-04-01), Hill
patent: 3977312 (1976-08-01), Kissell

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