EP 4386174 A1 20240619 - ROTATING SLEEVE, ROCK DRILLING MACHINE AND METHOD
Title (en)
ROTATING SLEEVE, ROCK DRILLING MACHINE AND METHOD
Title (de)
DREHHÜLSE, GESTEINSBOHRMASCHINE UND VERFAHREN
Title (fr)
MANCHON ROTATIF, MACHINE DE FORAGE DE ROCHES ET PROCÉDÉ
Publication
Application
Priority
EP 22213130 A 20221213
Abstract (en)
A rotating sleeve (17), rock drilling machine (6) and method of manufacturing a rotating sleeve. The rotating sleeve is mountable around a shank adapter (8) of a rock drilling machine and comprises several internal teeth (22) provided with opposing first flank surfaces (32) and second flank surfaces (33) for transmitting rotation to the shank adapter. The internal teeth are provided with end reliefs (38, 39) comprising chamfers between the flank surfaces and end surfaces (34) of the teeth.
IPC 8 full level
E21B 6/00 (2006.01); B25D 17/00 (2006.01); B25D 17/08 (2006.01); E21B 7/02 (2006.01)
CPC (source: EP)
B25D 17/005 (2013.01); B25D 17/084 (2013.01); E21B 6/00 (2013.01); E21B 7/025 (2013.01)
Citation (search report)
- [YA] EP 2811106 A1 20141210 - SANDVIK MINING & CONSTR OY [FI]
- [YA] EP 0561072 A1 19930922 - CANADIAN FRACMASTER LTD [CA]
- [YA] US 3874460 A 19750401 - SCHMID WOLFGANG, et al
- [A] US 10174565 B2 20190108 - ÖSTLING THOMAS [SE], et al
- [A] GB 2122271 A 19840111 - TAMPELLA OY AB
- [A] US 8011455 B2 20110906 - LYON LELAND H [US], et al
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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DOCDB simple family (application)
EP 22213130 A 20221213; EP 2023083142 W 20231127