EP 3317486 B1 20190814 - PERCUSSION DRILLING DEVICE
Title (en)
PERCUSSION DRILLING DEVICE
Title (de)
RAMMBOHRVORRICHTUNG
Title (fr)
APPAREIL DE FORAGE À PERCUSSION
Publication
Application
Priority
- DE 102015008340 A 20150701
- EP 2016001092 W 20160628
Abstract (en)
[origin: WO2017001053A1] The invention relates to a percussion drilling device, comprising a percussion piston, which is supported within a housing and which is driven in a cyclic back-and-forth motion, wherein, in a first switching position, the percussion piston hits a front percussion surface in order to drive the percussion drilling device in a first direction of motion and, in a second switching position, the percussion piston hits a rear percussion surface in order to drive the percussion drilling device in a second direction of motion, wherein, in order to switch between the directions of motion, a guide tube fastened to the housing and a control sleeve axially slidable on the guide tube are provided and the percussion piston is axially slidable on the control sleeve, wherein the control sleeve has two segments, which are connected to each other by means of a movable connection.
IPC 8 full level
E21B 4/14 (2006.01)
CPC (source: EP US)
E21B 1/38 (2020.05 - EP US); E21B 4/145 (2013.01 - EP 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)
WO 2017001053 A1 20170105; AU 2016286192 A1 20180201; AU 2016286192 B2 20190606; DE 102015008340 A1 20170105; EP 3317486 A1 20180509; EP 3317486 B1 20190814; US 10480246 B2 20191119; US 2018363375 A1 20181220
DOCDB simple family (application)
EP 2016001092 W 20160628; AU 2016286192 A 20160628; DE 102015008340 A 20150701; EP 16735992 A 20160628; US 201615739583 A 20160628