DEVICE FOR TAKING SAMPLES OF COBALT CRUSTS Russian patent published in 1996 - IPC

Abstract RU 2068095 C1

FIELD: mining industry. SUBSTANCE: device for taking samples of cobalt crusts consists of main drill pipe 1 and additional drill pipe 4, rock cutting member 9, confuser 5 with roller cutter drill bits 13. Attached to the main drill pipe string 1 is sleeve 8. Secured to sleeve are roller cutters 10 by means of flat hinge members 14. Sleeve 8 is installed for vertical motion. EFFECT: higher efficiency. 1 dwg

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RU 2 068 095 C1

Authors

Chernej Eh.I.

Khershberg B.L.

Markov A.E.

Dates

1996-10-20—Published

1990-07-17—Filed