Title:
A device for punching and punching lining
Document Type and Number:
Japanese Patent JP6208744
Kind Code:
B2
Abstract:
An arrangement at a drill includes a drill bit intended to be inserted at its neck into a chuck in a down-the-hole drill, a control means for guiding the drill and a lining pipe, a coupling arrangement in the form of a bayonet coupling or similar with which the drill can be coupled to the control means in a manner that allows them to be separated and that in its freed condition allows the drill, together with the down-the-hole drill, to be withdrawn through the lining pipe, a flushing passage for the supply of flushing agent in front of the drill and an evacuation passage for the removal of drilling cuttings together the flushing agent. It also includes a casing shoe that can be applied at the forward end of the lining pipe and a contact surface arranged at a stationary part of the down-the-hole drill.
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Inventors:
Fredrik Egerstrom
Application Number:
JP2015504527A
Publication Date:
October 04, 2017
Filing Date:
March 11, 2013
Export Citation:
Assignee:
LKAB Wassara AB
International Classes:
E21B7/20
Domestic Patent References:
| JP2007255106A | ||||
| JP2011021411A | ||||
| JP2010121275A | ||||
| JP2001140578A | ||||
| JP9158656A | ||||
| JP2006037613A | ||||
| JP11173058A | ||||
| JP7042858U | ||||
| JP2001164860A | ||||
| JP5071287A |
Foreign References:
| WO2010071563A1 | ||||
| WO1993018274A1 |
Attorney, Agent or Firm:
Takuji Yamada
Mitsuo Tanaka
Hiroshi Okabe
Mitsuo Tanaka
Hiroshi Okabe