Brake equipment

Brakes – Operators – Speed-responsive

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Details

73 9, 188 75, 188156, B60T 800, F16D 6538

Patent

active

042340632

ABSTRACT:
Strain gauge devices are mounted on the brake shoe carrying levers of an underground mine winding engine to sense induced strain and effective braking force when the brake is applied. A summation unit adds outputs from strain gauges. Indicators are operated by the result to indicate the effective braking force. A comparator compares the result with predetermined desired braking levels. Controls prevent release of other brake devices until the effective braking force exceeds a preselected magnitude.

REFERENCES:
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patent: 2992860 (1961-07-01), Hirzel
patent: 3162793 (1964-12-01), Mason
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patent: 3578817 (1971-05-01), Eastcott
patent: 3578819 (1971-05-01), Atkins
patent: 3594721 (1971-07-01), Frenkel et al.
patent: 3596156 (1971-07-01), Davey et al.
patent: 3711162 (1973-01-01), Steinbrenner et al.
patent: 3876918 (1975-04-01), Kamuro et al.
patent: 3993270 (1976-11-01), Gallacher

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