EP 4116539 B1 20240306 - DRILL HEAD OF AN EARTH BORING DEVICE, METHOD FOR MANUFACTURING AN EARTH BORING DEVICE AND USE OF A DRILL HEAD ARRANGEMENT OF AN EARTH BORING DEVICE
Title (en)
DRILL HEAD OF AN EARTH BORING DEVICE, METHOD FOR MANUFACTURING AN EARTH BORING DEVICE AND USE OF A DRILL HEAD ARRANGEMENT OF AN EARTH BORING DEVICE
Title (de)
BOHRKOPF EINER ERDBOHRVORRICHTUNG, VERFAHREN ZUM HERSTELLEN EINES BOHRKOPFS EINER ERDBOHRVORRICHTUNG UND VERWENDUNG EINES BOHRKOPFS EINER ERDBOHRVORRICHTUNG
Title (fr)
TÊTE DE PERÇAGE D'UNE TARIÈRE, PROCÉDÉ DE FABRICATION D'UNE TÊTE DE PERÇAGE D'UNE TARIÈRE ET UTILISATION D'UNE TÊTE DE PERÇAGE D'UNE TARIÈRE
Publication
Application
Priority
DE 102021003448 A 20210705
Abstract (en)
[origin: US2023003087A1] The invention relates to a drill head of a ground drilling device having a drill bit and an attachment which can be fastened to the drill bit, wherein at least one dowel pin is provided for holding the attachment on the drill bit, and the drill bit has one or more receptacles for a dowel pin, wherein the receptacle is enlarged with respect to the radius of the dowel pin.
IPC 8 full level
E21B 4/14 (2006.01)
CPC (source: EP US)
E21B 4/145 (2013.01 - EP); E21B 10/62 (2013.01 - US); E21B 17/0465 (2020.05 - US)
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)
EP 4116539 A1 20230111; EP 4116539 B1 20240306; AU 2022204803 A1 20230119; DE 102021003448 A1 20230105; US 11970909 B2 20240430; US 2023003087 A1 20230105
DOCDB simple family (application)
EP 22181842 A 20220629; AU 2022204803 A 20220705; DE 102021003448 A 20210705; US 202217856065 A 20220701