SHIELD FOR WORKING OF THICK STEEP SEAMS Russian patent published in 1994 - IPC

Abstract RU 2011837 C1

FIELD: mining industry. SUBSTANCE: shield is intended for support of thick steep seams when they are worked. Shield includes metal frame with supports placed over perimeter, counter floor laid on it, metal belts made fast to supports and spread props attached fixedly to frame between supports. EFFECT: simplified design, improved reliability. 2 dwg

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RU 2 011 837 C1

Authors

Popov V.A.

Dates

1994-04-30—Published

1991-01-31—Filed