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Machine translation
1. (WO1981000131) A DRAG BIT FOR ROTARY ROCK DRILLING
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/000131    International Application No.:    PCT/SE1980/000187
Publication Date: 22.01.1981 International Filing Date: 04.07.1980
IPC:
E21B 10/42 (2006.01), E21B 10/56 (2006.01), E21B 10/62 (2006.01)
Applicants:
Inventors:
Priority Data:
7905845 04.07.1979 SE
Title (EN) A DRAG BIT FOR ROTARY ROCK DRILLING
(FR) MECHE A ENTRAINEMENT DE FORAGE ROTATIF DE LA ROCHE
Abstract: front page image
(EN)A drill bit of the drag bit type for rotary drilling has three cylindrical cutting inserts (13) that are clamped against the bit body by means of wedges that are pre-stressed by means of one or more threaded connections that have axes that are substantially longitudinal with respect to the bit. A single threaded connection can be common to all the wedges and it can be subject to the reaction torque in the tightening direction during drilling.
(FR)Une meche de forage du type a entrainement de forage rotatif possede trois organes de taille cylindriques (13) qui sont fixes contre le corps de la meche au moyen de coins qui sont precontraints a l"aide d"une ou plusieurs liaisons filetees dont les axes sont sensiblement longitudinaux par rapport a la meche. Une seule liaison filetee peut etre commune a tous les coins et elle peut etre soumise au couple de reaction dans le sens de serrage pendant le forage.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)