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1. (WO2004095076) BURIED LINE LOCATOR WITH INTEGRAL POSITION SENSING
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2004/095076 International Application No.: PCT/US2004/007704
Publication Date: 04.11.2004 International Filing Date: 02.04.2004
IPC:
G01V 3/08 (2006.01)
Applicants: PACEY, Gordon[US/US]; US (UsOnly)
METROTECH CORPORATION[US/US]; 488 Tasman Drive Sunnyvale, CA 94089, US (AllExceptUS)
Inventors: PACEY, Gordon; US
Agent: GARRETT, Arthur, S.; Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P. 1300 I Street, N.W. Washington, DC 20005-3315, US
Priority Data:
10/407,70503.04.2003US
Title (EN) BURIED LINE LOCATOR WITH INTEGRAL POSITION SENSING
(FR) LOCALISATEUR DE CABLE SOUTERRAIN AVEC DETECTION DE POSITION INTEGREE
Abstract: front page image
(EN) A device for detecting and compensating field distortion in underground line locators by means of mapping the field-strength of the field generated by electrical currents within the buried line. Signals from the underground structure can be mapped with respect to the position of the device. From the map, distortions from the expected signals can be determined, indicating interference from other structures or errors in the detected location of the structure.
(FR) L'invention concerne un dispositif destiné à détecter et corriger une distorsion de champ dans des localisateurs de câble souterrain par cartographie de la puissance du champ généré par les courants électriques dans le câble souterrain. Les signaux en provenance de la structure souterraine peuvent être cartographiés par rapport à la position du dispositif. A partir de la carte, on peut déterminer les distorsions sur la base des signaux attendus, ces distorsions indiquant une interférence d'autres structures ou des erreurs dans l'emplacement détecté de la structure.
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, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, 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, IT, LU, 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)