DEVICE FOR DRILLING HOLES Russian patent published in 1995 - IPC

Abstract RU 2041334 C1

FIELD: construction. SUBSTANCE: hinged to boom of base machine is mechanism for mating boom and mast which consists of a pair of retainers engageable with funnel-shaped sockets located on mast upper end. Freely movable on mast guides is carriage which is engageable with stops in mast upper part. Carriage carries drive of working member and is suspended from base machine hook suspension. Secured in lower part of mast is surface casing with anchor pins. EFFECT: higher efficiency. 8 cl, 3 dwg

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RU 2 041 334 C1

Authors

Rogashov Ivan Petrovich

Dates

1995-08-09—Published

1992-07-22—Filed