Passive explosion barrier

Details Passive explosion barrier Passive explosion barrier

1975-10-14

1976-06-01

Ward, Jr., Robert S.

Fire extinguishers

Special applications

For mine

169 29, A62C 3504

Patent

active

039602176

ABSTRACT:
A passive explosion barrier for suppressing the effects of an explosion in a mine gallery, or the like, comprises a receptacle containing an explosion suppressing substance adapted to be supported by framework adjacent the mine roof. In one embodiment, a corrugated face plate is hinged to the base of the receptacle on one side thereof. First and second support flanges are formed respectively on the upper end of the face plate and on the rim of the receptacle on the side thereof opposite the plate. The receptacle is mounted to the framework with the support flanges resting on first and second beams and with the face plate viewing the explosion source and oblique to a horizontal plane. The weight of the receptacle, and friction between the face plate flange and first beam, prevent the receptacle from releasing due to accidental disturbances. However, the force of wind accompanying an explosion acts against the face plate, causing it to both lift from the first beam and pivot toward the receptacle. As this occurs, the receptacle slips from the first beam and spills the suppressing substance into the path of the explosion. Wind force also maintains the receptacle flange temporarily in contact with the second beam. This imparts rotation to the receptacle as it falls to the ground for thorough dispersion of the suppressing substance. In another embodiment, a pair of face plates are hinged to opposite sides of the receptacle for bidirectional operation.

REFERENCES:
patent: 2352378 (1944-06-01), Geertz

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