FIELD: mine industry. SUBSTANCE: device has mine hoisting plant drive 1, two hoist vessels, two transmitters, two acoustic oscillations radiators, two acoustic oscillations receivers, standard generator, two mixers, two discriminator, two comparator, EXCLUSIVE-OR gate, unit for protection against lapping. EFFECT: improved protection. 1 dwg
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|---|---|---|---|
| DEVICE FOR PROTECTING MINE HOIST HAULAGE ROPES FROM LAP | 1990 |
|
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