EP 3854942 A1 20210728 - AN ASSYMETRIC DRILL TOOTH
Title (en)
AN ASSYMETRIC DRILL TOOTH
Title (de)
ASSYMETRISCHER BOHRZAHN
Title (fr)
DENT D'UN FORER ASSYMETRIQUE
Publication
Application
Priority
- EP 20785232 A 20200306
- NZ 75231519 A 20190403
- IB 2020051936 W 20200306
Abstract (en)
An asymmetric drill tooth (130) for a stone column drill (21), where the drill (21) includes a drill flight (24), in use said asymmetric tooth (130) is attached to a keeper (120) located at a terminal end (121,122) of said drill flight (24).
IPC 8 full level
E02D 3/08 (2006.01); E02D 7/22 (2006.01); E21B 10/32 (2006.01)
CPC (source: AU EP US)
E02D 3/08 (2013.01 - AU EP US); E02D 3/126 (2013.01 - AU US); E02D 5/46 (2013.01 - AU US); E02D 5/56 (2013.01 - AU); E02D 27/12 (2013.01 - AU US); E21B 10/44 (2013.01 - AU EP); E21B 17/22 (2013.01 - AU US); E02D 3/02 (2013.01 - AU); E02D 5/56 (2013.01 - EP); E02D 5/62 (2013.01 - AU); E02D 7/22 (2013.01 - EP); E02D 2250/0038 (2013.01 - AU US); E02D 2300/0018 (2013.01 - AU US); E02D 2300/0079 (2013.01 - US); E21B 10/44 (2013.01 - US)
Citation (applicant)
WO 2014091395 A1 20140619 - MCMILLAN JARON LYELL [NZ]
Citation (search report)
- [X] JP S5685087 A 19810710 - WATANABE HIROSHI
- [X] JP H06146765 A 19940527 - ISHIOKA KENSETSU KK
- [X] EP 2246479 A1 20101103 - SOILMEC SPA [IT]
- [XA] US 2016230469 A1 20160811 - FROST ROBERT L [US], et al
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2020201854 A1 20201008; AU 2020255345 A1 20211028; AU 2020255345 B2 20230713; CA 3133031 A1 20201008; EP 3830345 A1 20210609; EP 3830345 A4 20211222; EP 3830345 B1 20230118; EP 3854942 A1 20210728; EP 3904602 A1 20211103; EP 3904602 B1 20231220; EP 3904602 C0 20231220; SI 3830345 T1 20230428; US 2022136199 A1 20220505
DOCDB simple family (application)
IB 2020051936 W 20200306; AU 2020255345 A 20200306; CA 3133031 A 20200306; EP 20785232 A 20200306; EP 21162063 A 20200306; EP 21162151 A 20200306; SI 202030174 T 20200306; US 202017436156 A 20200306