EP 3645199 A1 20200506 - DRILL FOR CHISELING STONE
Title (en)
DRILL FOR CHISELING STONE
Title (de)
BOHRER FÜR DIE MEIßELNDE BEARBEITUNG VON GESTEIN
Title (fr)
FORET POUR LE TRAITEMENT DE ROCHE PAR BURINAGE
Publication
Application
Priority
- EP 17178104 A 20170627
- EP 2018066371 W 20180620
Abstract (en)
[origin: WO2019002040A1] The invention relates to a drill (1) for chiseling stone, the drill having an impact surface (7) on an insertion end (6), a hollow shaft (4) inside which a conveying duct (35) is provided, and a drill head (2). The drill head (2) has three or more blades (14) and one or more intake openings (3) on an end face (12). Intake ducts (30) are located inside the drill head (2) which connect the intake openings (3) to the conveying duct (35). A cross-section of the intake ducts (30) increases from the intake opening (3) to the conveying duct (35). The expanding intake duct (30) is less likely to become obstructed than an intake duct (30) having a cross-section which is constant or even decreases.
IPC 8 full level
B23B 51/06 (2006.01)
CPC (source: EP US)
B23B 51/02 (2013.01 - US); B23B 51/06 (2013.01 - EP); B25D 17/02 (2013.01 - US); B25D 17/20 (2013.01 - US); B28D 1/146 (2013.01 - US); B28D 1/26 (2013.01 - US); E21B 10/36 (2013.01 - US); E21B 10/38 (2013.01 - EP); B23B 2222/28 (2013.01 - EP US); B23B 2226/75 (2013.01 - EP US); B23B 2251/02 (2022.01 - EP); B23B 2251/68 (2013.01 - EP US); B25D 2217/0003 (2013.01 - US); B25D 2222/51 (2013.01 - 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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3421163 A1 20190102; CN 110799298 A 20200214; CN 110799298 B 20211008; EP 3645199 A1 20200506; JP 2020525675 A 20200827; JP 6896116 B2 20210630; US 11691204 B2 20230704; US 2020156163 A1 20200521; WO 2019002040 A1 20190103
DOCDB simple family (application)
EP 17178104 A 20170627; CN 201880042755 A 20180620; EP 18730409 A 20180620; EP 2018066371 W 20180620; JP 2019572034 A 20180620; US 201816626257 A 20180620