BOPI 04 BR/2024 REPERTOIRE NUMERIQUE 12 (74) Cabinet Spoor & Fisher Inc. Ngwafor & Partners, The House of Gideon, Golf/Bastos Quater, Opposite The American Embassy, Entrance-Saint John Paul II Boulevard, P.O. Box 8211, YAOUNDE (CM). (57) The present invention concerns a drive module (10', 10", 10'", 10"") for a wellbore tractor (1). Each drive module (10', 10", 10'", 10"") comprises a drive module housing (13) and a hydraulically actuated and pivoting drive unit (11) comprising an arm housing (11') and two drive wheels (12', 12") arranged thereto. The drive wheels (12', 12") are driven by a motor (16) mounted inside the arm housing (11'). The drive wheels (12', 12") are drivingly connected to the motor (16) via a drive line comprising a worm gear drive arrangement (14). The invention teaches also a wellbore tractor (1) comprising at least one of said drive modules (10', 10", 10'", 10""). Fig. 1 ________________________________________ (11) 21483 Consulter le mémoire (51) A61K 31/5375 (2018.01); A61K 45/06 (2018.01); A61K 9/48 (2018.01); A61P 25/14 (2018.01) ; C07D 471/04 (2018.01) (21) 1202200512 - PCT/EP2021/065074 (22) 04/06/2021 (30) US n° 63/035, 310 du 05/06/2020; US n° 63/160, 302 du 12/03/2021
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