Global Patent Index - EP 0985080 A1

EP 0985080 A1 2000-03-15 - DRILLING TOOL, ESPECIALLY A ROCK DRILL

Title (en)

DRILLING TOOL, ESPECIALLY A ROCK DRILL

Title (de)

BOHRWERKZEUG, INSBESONDERE GESTEINSBOHRER

Title (fr)

OUTIL DE FORAGE, NOTAMMENT FLEURET A ROCHER

Publication

EP 0985080 A1 (DE)

Application

EP 98933546 A

Priority

  • DE 9801358 W
  • DE 19722518 A

Abstract (en)

[origin: DE19722518A1] The invention relates to a drilling tool, especially a rock drill. According to the invention, the helical stem consists of a polygonal rod without wings or ribs. Said rod is twisted to form a cutting twist. The clamping stem is configured for accommodation in a hammer drill machine.

IPC 1-7 (main, further and additional classification)

E21B 10/44

IPC 8 full level (invention and additional information)

E21B 10/44 (2006.01)

CPC (invention and additional information)

E21B 10/445 (2013.01)

Citation (search report)

See references of WO 9854434A1

Designated contracting state (EPC)

DE DK FR GB IT

EPO simple patent family

DE 19722518 A1 19981203; CN 1094169 C 20021113; CN 1258334 A 20000628; EP 0985080 A1 20000315; JP 2002500713 A 20020108; WO 9854434 A1 19981203

INPADOC legal status


2005-06-29 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20041201

2000-03-15 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991105

2000-03-15 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE DK FR GB IT