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Machine translation
1. (WO1981003044) ROTARY DRILL BIT
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/003044    International Application No.:    PCT/SE1981/000055
Publication Date: 29.10.1981 International Filing Date: 02.03.1981
IPC:
E21B 10/22 (2006.01), F16J 15/32 (2006.01)
Applicants:
Inventors:
Priority Data:
8002882 17.04.1980 SE
Title (EN) ROTARY DRILL BIT
(FR) MECHE DE PERCAGE ROTATIVE
Abstract: front page image
(EN)A sealed rotary drill bit comprising at least one rotatably carried roller cutter (13) and provided with sealing means (22) for preventing lubricating means from being discharged from the bearing means (14, 15, 16, 17, 18) and impurities from entering the bearing means. For purposes of decreasing the friction the sealing means (22) is provided with a low friction material (25).
(FR)Une meche de percage rotative scellee comprenant au moins une fraise a rouleau montee de maniere rotative (13) et pourvue de moyen d"etancheite (22) pour empecher des moyens de lubrification de sortir des moyens de portee (14, 15, 16, 17, 18) et pour empecher les impuretes d"entrer dans les moyens de portee. Dans le but de diminuer la friction, les moyens d"etancheite (22) sont pourvus d"un materiau de faible friction (25).
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)