AERODYNAMIC NON-REVERSE VALVE Russian patent published in 2000 - IPC

Abstract RU 2157955 C2

FIELD: fan manufacture, namely main ventilation systems for shafts and mines, mainly gas suction units and, particularly systems for controlling environmental pressure. SUBSTANCE: aerodynamic non-return valve includes body with locking member mounted in it and having aerodynamic profile of wing and non-symmetrical rotation axle. The last is provided with weights mounted on guides with possibility of motion. EFFECT: reduced aerodynamic resistance, less loss of power, enhanced explosion-proof properties. 2 cl, 4 dwg

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RU 2 157 955 C2

Authors

Agushev V.A.

Kutaev V.I.

Lavrik V.G.

Savvateev A.P.

Stekol'Shchikov G.G.

Dates

2000-10-20—Published

1998-05-07—Filed