EP 0336010 A1 19891011 - Percussion drill with interchangeable downhole or sideways discharging cutting or drilling head.
Title (en)
Percussion drill with interchangeable downhole or sideways discharging cutting or drilling head.
Title (de)
Schlagbohrer mit austauschbarem Schneid- oder Bohrkopf mit abwärts oder seitwärts gerichteten Spülungskanälen.
Title (fr)
Trépan de percussion muni d'une tête coupante ou perçante interchangeable à décharge de fluide axiale ou latérale.
Publication
Application
Priority
IT 1245288 A 19880329
Abstract (en)
This invention covers a percussion drill with downhole discharging (4) and sideways discharging cutting heads (16) interchangeable with the downhole cutting head (4). The sideways discharging cutting head has a central duct (17) terminating at its upper end with a pipe section (18) so as to be functionally compatible with the percussion device (9), provided with a central duct (10). One single drill may therefore be fitted with these interchangeable heads (4, 16) so as to permit drilling in any and all conditions and in any soil type.
IPC 1-7
IPC 8 full level
E21B 4/06 (2006.01); E21B 4/14 (2006.01); E21B 10/38 (2006.01); E21B 17/07 (2006.01); E21B 21/00 (2006.01); E21B 21/10 (2006.01); E21B 34/12 (2006.01)
CPC (source: EP)
E21B 4/06 (2013.01); E21B 4/14 (2013.01); E21B 10/38 (2013.01); E21B 17/07 (2013.01); E21B 17/076 (2013.01); E21B 21/10 (2013.01); E21B 34/12 (2013.01)
Citation (search report)
- [A] EP 0005384 A1 19791114 - STENUICK FRERES [BE]
- [A] US 4530408 A 19850723 - TOUTANT ROLAND J [US]
- [A] US 3339649 A 19670905 - LENNART FORSSEN TORSTEN STIG
- [A] US 4043409 A 19770823 - WALTER HANS-PHILIPP
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR LI LU NL SE
DOCDB simple family (publication)
EP 0336010 A1 19891011; EP 0336010 B1 19920513; AT E76158 T1 19920515; DE 3871137 D1 19920617; IT 1220559 B 19900615; IT 8812452 A0 19880329
DOCDB simple family (application)
EP 88118509 A 19881107; AT 88118509 T 19881107; DE 3871137 T 19881107; IT 1245288 A 19880329