EP 0692612 A3 19970604 - Method for drilling with a drilling tool having an eccentrical mounted shaft
Title (en)
Method for drilling with a drilling tool having an eccentrical mounted shaft
Title (de)
Verfahren zum Bohren mit einer exzentrisch angeordneten Welle eines Bohrwerkzeuges
Title (fr)
Procédé de forage avec un outil de forage avec un arbre arrangé excentriquement
Publication
Application
Priority
CH 233394 A 19940713
Abstract (en)
[origin: EP0692612A2] The method involves using fast-running, driven cam on which slow running sockets with tools are rotatably located. A combination of at least two counter-balanced tool sockets (3) on only one eccentric shaft (7), either automatically rotate in a striking fashion or do so in a driven manner. Counterweights (5) are provided on the eccentric shafts on which the sockets and tools are balanced. At least two sockets and tools are arranged on an eccentric shaft and are balanced against one another by at least two cams. A central bearing with a drive is provided for each cam with a tool socket. <IMAGE>
IPC 1-7
IPC 8 full level
E21B 1/14 (2006.01); E21B 10/08 (2006.01); E21C 25/18 (2006.01); E21D 9/10 (2006.01)
CPC (source: EP)
E21B 10/086 (2013.01); E21C 25/18 (2013.01); E21D 9/104 (2013.01)
Citation (search report)
- [A] US 5190353 A 19930302 - BECHEM ULRICH [CH]
- [A] WO 8900235 A1 19890112 - BECHEM HANNELORE [CH]
- [A] WO 8901837 A1 19890309 - BECHEM HANNELORE [CH]
- [A] EP 0592981 A1 19940420 - BECHEM HANNELORE [DE]
- [A] EP 0409050 A2 19910123 - BALANCE SYSTEMS SRL [IT]
- [A] EP 0136716 A2 19850410 - OSZUT MUMIN
Designated contracting state (EPC)
AT DE FR GB IT NL SE
DOCDB simple family (publication)
EP 0692612 A2 19960117; EP 0692612 A3 19970604; EP 0692612 B1 20010829; AT E204948 T1 20010915; CH 689546 A5 19990615; DE 59509552 D1 20011004; ZA 955733 B 19970408
DOCDB simple family (application)
EP 95110994 A 19950713; AT 95110994 T 19950713; CH 233394 A 19940713; DE 59509552 T 19950713; ZA 955733 A 19950711