LOCK OF ROOF BOLTING Russian patent published in 1994 - IPC

Abstract RU 2011841 C1

FIELD: mining industry. SUBSTANCE: cylindrical bushing in the form of pipe with flange is mounted on rod for movement along anchor between inner rest and pipe. Rubber barrel-shaped shell is put on bushing resting against flange with one end. Its other end rests against inner rest. EFFECT: prolonged durability, increased reliability. 7 dwg

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RU 2 011 841 C1

Authors

Fedorchenko A.I.

Finogenov A.T.

Konukhin V.P.

Dates

1994-04-30—Published

1990-09-10—Filed