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Machine translation
1. (WO2007021422) TRIPLE VALVE BLOW OUT PREVENTER
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2007/021422 International Application No.: PCT/US2006/027752
Publication Date: 22.02.2007 International Filing Date: 17.07.2006
IPC:
E21B 33/06 (2006.01) ,F16K 37/00 (2006.01)
Applicants: SENEVIRATNE, Padmisiri, Daya[US/US]; US (UsOnly)
WELLS, Lawrence[US/US]; US (UsOnly)
MASON, David, B.[US/US]; US (UsOnly)
VARCO I/P, INC.[US/US]; 743 North Eckhoff Street Orange, CA 92868, US (AllExceptUS)
Inventors: SENEVIRATNE, Padmisiri, Daya; US
WELLS, Lawrence; US
MASON, David, B.; US
Agent: PECK, John, W.; Christie, Parker & Hale, LLP P.O. Box 7068 Pasadena, CA 91109, US
Priority Data:
11/201,05609.08.2005US
Title (EN) TRIPLE VALVE BLOW OUT PREVENTER
(FR) BLOC D'OBTURATION DE PUITS A TRIPLE CLAPET
Abstract: front page image
(EN) A triple-valve internal blow out preventer having unitary construction is provided, each valve including a tubular assembly having a central passageway with upper and lower seats mounted therein. A ball is rotatably received between the upper and lower seats and includes an external surface and a central opening, wherein the central opening may include an undercut. A protective coating may also be applied to both the external surface and the undercut of the ball to increase the durability of each of the valves.
(FR) Cette invention concerne un bloc d'obturation de puits à triple clapet, de construction unitaire, dont chaque clapet comporte un ensemble tubulaire à passage central avec siège supérieur et inférieur intégrés. Une bille montée rotatif entre les sièges supérieur et inférieur présente une surface extérieure et un orifice central éventuellement sous-cavé. Un revêtement de protection peut également être appliqué sur la surface extérieure et sur la région sous-cavée de la bille dans le but d'augmenter la longévité de chacun des clapets.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)