EP 0425802 B1 19930818 - DRILLING DEVICE WITH PERCUSSIVE AND ROTATIVE TOOL
Title (en)
DRILLING DEVICE WITH PERCUSSIVE AND ROTATIVE TOOL
Publication
Application
Priority
DE 3935985 A 19891028
Abstract (en)
[origin: EP0425802A1] Drilling devices in the form of percussive piercers or rotative piercers are known, by means of which boreholes, in particular in gas concrete, are produced. <??>To prevent the percussive drilling piercer from getting jammed in the borehole during its return stroke and nevertheless to obtain maximum holding values in gas concrete, a drilling device with a percussive drilling piercer (1), a driving bush (2) connected thereto, and a ram (3) is proposed, on which a drill receptacle (3a) is arranged. <IMAGE>
IPC 1-7
IPC 8 full level
B23B 45/16 (2006.01); B23B 51/00 (2006.01); B25D 17/00 (2006.01); B25D 17/08 (2006.01); B28D 1/14 (2006.01); E21B 10/36 (2006.01); E21B 19/06 (2006.01)
CPC (source: EP US)
B25D 17/005 (2013.01 - EP US); E21B 10/36 (2013.01 - EP US); E21B 19/06 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI NL
DOCDB simple family (publication)
EP 0425802 A1 19910508; EP 0425802 B1 19930818; AT E93173 T1 19930915; BR 9005395 A 19910917; DE 3935985 A1 19910502; DE 59002384 D1 19930923; DK 0425802 T3 19931011; ES 2045705 T3 19940116; JP H03153310 A 19910701; JP H0716940 B2 19950301; RU 2032539 C1 19950410; US 5076374 A 19911231
DOCDB simple family (application)
EP 90117700 A 19900914; AT 90117700 T 19900914; BR 9005395 A 19901025; DE 3935985 A 19891028; DE 59002384 T 19900914; DK 90117700 T 19900914; ES 90117700 T 19900914; JP 28602790 A 19901025; SU 4831428 A 19901026; US 60512090 A 19901026