EP 2501863 A4 20130626 - PERMANENT MAGNET DIRECT DRIVE DRAWWORKS

Title (en)

PERMANENT MAGNET DIRECT DRIVE DRAWWORKS

Title (de)

HEBEWERK MIT PERMANENTMAGNET-DIREKTANTRIEB

Title (fr)

TREUILS DE FORAGE A PRISE DIRECTE A AIMANT PERMANENT

Publication

EP 2501863 A4 20130626 (EN)

Application

EP 10842637 A 20101217

Priority

US 64343909 A 20091221
US 2010060943 W 20101217

Abstract (en)

[origin: WO2011084669A2] A direct drive drawworks (100) has a permanent magnet motor (40), a shaft (41) extending from the permanent magnet motor (40) so that the permanent magnet motor directly rotates the shaft (41), and a drum (43) connected to the shaft (41) away from the permanent magnet motor (40) such that the rotation of the shaft causes a corresponding rotation of the drum. The permanent magnet motor (40) has a housing (42), a stator (62) positioned in the housing, and a rotor (64) cooperative with the stator. The rotor (64) has a drive plate (66) affixed thereto. The shaft (41) is directly connected to the drive plate (66). A bearing housing (45) rotatably supports the shaft.

IPC 8 full level

E02F 5/04 (2006.01); B66D 1/14 (2006.01); E02F 3/88 (2006.01)

CPC (source: EP)

B66D 1/12 (2013.01); E21B 19/008 (2013.01); H02K 7/1004 (2013.01)

Citation (search report)

[X] US 7633248 B1 20091215 - WILLIAMS KEVIN R [US]
[X] US 2008203734 A1 20080828 - GRIMES MARK FRANCIS [US], et al
[X] US 2002121823 A1 20020905 - GAUTHIER PASCAL [FR]
[A] WO 0076054 A1 20001214 - SMART MOTOR AS [NO], et al
See references of WO 2011084669A2

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

WO 2011084669 A2 20110714; WO 2011084669 A3 20111027; AU 2010339868 A1 20120531; AU 2010339868 B2 20150423; CA 2778833 A1 20110714; CA 2778833 C 20180306; CN 102667009 A 20120912; EP 2501863 A2 20120926; EP 2501863 A4 20130626; IN 3796DEN2012 A 20150828; MX 2012005207 A 20120613; NO 20120518 A1 20120522; RU 2012131406 A 20140127; RU 2553793 C2 20150620

DOCDB simple family (application)

US 2010060943 W 20101217; AU 2010339868 A 20101217; CA 2778833 A 20101217; CN 201080056098 A 20101217; EP 10842637 A 20101217; IN 3796DEN2012 A 20120501; MX 2012005207 A 20101217; NO 20120518 A 20120507; RU 2012131406 A 20101217