EP 1753931 B1 20080709 - PNEUMATIC PERFORATOR
Title (en)
PNEUMATIC PERFORATOR
Title (de)
PNEUMATISCHE PERFORIERVORRICHTUNG
Title (fr)
PERFORATEUR PNEUMATIQUE
Publication
Application
Priority
- RO 2004000015 W 20040909
- RO 200400513 A 20040607
Abstract (en)
[origin: WO2005121492A1] The invention is referring to a pneumatic perforator for drilling in mining industry having a head cylinder including the admission valve of the compressed air and the water washing installation for the perforated hole washing, characterized by that the perforator is provided by a quick change of the rotation speed device (B) which's line grooved bushing (8) placed in a gear's hub (9) is driving an pipe shaft (16) provided by idlers (17, 18, 19) geared by the steering wheels (22, 23, 24) fixed on the rotation bushing (25) in which is pressed the drill-bushing (30); its rotation speed is selected by a mobile peen (31) assembled in the rod (32).
IPC 8 full level
E21B 1/30 (2006.01)
CPC (source: EP)
E21B 1/30 (2020.05)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005121492 A1 20051222; AT E400725 T1 20080715; DE 602004014996 D1 20080821; EP 1753931 A1 20070221; EP 1753931 B1 20080709; RO 122220 B1 20090227
DOCDB simple family (application)
RO 2004000015 W 20040909; AT 04816703 T 20040909; DE 602004014996 T 20040909; EP 04816703 A 20040909; RO 200400513 A 20040607