Patent · US Active

Method and device for working rock

US8950823B2 · kind B2 · utility

0Cited by

10References

16Claims

0Family size

Assignee

ATLAS COPCO CRAELIUS AB · SE

Inventors

Mats Kristerson · Sjöbo, SE
Carl-Gustav Martinsson · Stockholm, SE
Sverker Hartwig · Bissenkamp, SE
Kaj Emanuelsson · Wilrijk, BE
Morgan Norling · Västerås, SE
Gunnar Nord · Sollentuna, SE

Key dates

Filing date	Jan 26, 2011
Grant date	Feb 10, 2015
Priority date	—
Expiry date	Jan 26, 2031

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21D9/1026
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A method and rig for driving tunnels, galleries, shafts or the like. The rig has a movable base unit that over a support unit supports a carrying unit which in turn carries a cutting head having outwardly directed cutting elements. The method includes rotating the cutting head around a general axis of rotation and applying the cutting head against a rock surface to be worked. The carrying unit is swung into a first chosen mutual position in respect of the support unit. The support unit is rotated into a second chosen mutual position with respect to the base unit around an axis that is essentially longitudinal with respect to the base unit. An angle of operation of the cutting head is controllable.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.