EP 2740884 A1 20140611 - Rock bit tip and rock bit
Title (en)
Rock bit tip and rock bit
Title (de)
Steinbohrspitze und Steinbohrer
Title (fr)
Pointe de trépan de roche et trépan de roche
Publication
Application
Priority
EP 12195889 A 20121206
Abstract (en)
A rock bit tip (120) comprising a mounting portion (122), an end portion (11) converging from a top end of the mounting portion to form a work surface and at least one recess (125) in a bottom (124) of the mounting portion, the recess extending towards said end portion, wherein there are more than one recess. The invention further relates to a rock bit.
IPC 8 full level
E21B 10/16 (2006.01); E21B 10/43 (2006.01); E21B 10/573 (2006.01)
CPC (source: CN EP US)
E21B 10/16 (2013.01 - CN EP US); E21B 10/43 (2013.01 - CN EP US); E21B 10/573 (2013.01 - CN EP US); E21B 10/5735 (2013.01 - US); E21C 35/183 (2013.01 - US); E21C 35/1831 (2020.05 - US)
Citation (applicant)
- US 4150728 A 19790424 - GARNER LLOYD L [US], et al
- US 6446739 B1 20020910 - RICHMAN LANCE T [US], et al
- US 7296641 B2 20071120 - HADIN PER-OLA [SE], et al
- US 8210618 B2 20120703 - MONYAK KENNETH [US], et al
Citation (search report)
- [A] US 4176725 A 19791204 - SHIELDS SANTOS [US]
- [AD] US 4150728 A 19790424 - GARNER LLOYD L [US], et al
- [A] US 2009051212 A1 20090226 - MONYAK KENNETH [US], et al
- [A] US 4893875 A 19900116 - LONN ALAN H [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)
EP 2740884 A1 20140611; EP 2740884 B1 20150225; AU 2013354372 A1 20150514; BR 112015013113 A2 20170711; CA 2888912 A1 20140612; CL 2015001560 A1 20150828; CN 104854299 A 20150819; MX 2015006959 A 20150908; PE 20151099 A1 20150806; RU 2015126798 A 20170113; US 2015308199 A1 20151029; WO 2014086620 A1 20140612; ZA 201503945 B 20171129
DOCDB simple family (application)
EP 12195889 A 20121206; AU 2013354372 A 20131126; BR 112015013113 A 20131126; CA 2888912 A 20131126; CL 2015001560 A 20150605; CN 201380059999 A 20131126; EP 2013074734 W 20131126; MX 2015006959 A 20131126; PE 2015000737 A 20131126; RU 2015126798 A 20131126; US 201314649589 A 20131126; ZA 201503945 A 20150602