DEVICE FOR SEALING OF BLASTHOLES Russian patent published in 1995 - IPC

Abstract RU 2029093 C1

FIELD: mining industry. SUBSTANCE: device for sealing of blastholes has sealing member in form of central tube with flexible sealing bushing embracing sealing member, and check valve mounted on tube outlet; injection tube screwed on central tube. Device has bracing screw mechanism with bracing tube embracing injection tube. Bracing screw mechanism has pressure nut screwed on central tube and acting on flexible bushing. Bracing tube has end face head contacting pressure nut. EFFECT: higher efficiency. 3 dwg

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RU 2 029 093 C1

Authors

Mentus B.A.

Gorin A.T.

Trojan N.P.

Vasjaev V.V.

Dates

1995-02-20—Published

1992-03-18—Filed