ROCK DRILLING RIG PROVIDED WITH A SOUND DAMPENING CASING - Patent 1366267

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EP 1 366 267 A1

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(43)	Date of publication:
	03.12.2003 Bulletin 2003/49

(21)	Application number: 02748347.8

(22)	Date of filing: 27.02.2002

(51)	International Patent Classification (IPC)⁷: E21B 7/02, E21B 15/00, B25D 17/11

(86)	International application number:
	PCT/SE0200/331

(87)	International publication number:
	WO 0207/0856 (12.09.2002 Gazette 2002/37)

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
	Designated Extension States:
	AL LT LV MK RO SI

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Priority:

07.03.2001 SE 0100743

(71)	Applicant: ATLAS COPCO ROCK DRILLS AB
	701 91 Orebro (SE)

(72)	Inventor:
	HAMMER, Rickard S-702 21 Örebro (SE)

(74)	Representative: Grundfelt, Erik Gunnar
	Atlas Copco Rock Drills AB,Patents S-105 23 Stockholm S-105 23 Stockholm (SE)

(54)	ROCK DRILLING RIG PROVIDED WITH A SOUND DAMPENING CASING