FIELD: ventilator plants for gas ventilation of mines. SUBSTANCE: flexible member is arranged inside rim and is secured to ventilator housing engageable with gas-and-air duct. Rim is made of brass in form of fluted spring. Flexible member is made of cold-resistant conveyer rubber band in form of fixed and movable frames. EFFECT: enhanced reliability. 2 dwg
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Authors
Dates
1995-11-10—Published
1992-11-05—Filed