EP 0885092 A1 19981223 - A DEVICE PERFORMING HAMMERING BY MEANS OF HYDRAULIC PRESSURE
Title (en)
A DEVICE PERFORMING HAMMERING BY MEANS OF HYDRAULIC PRESSURE
Title (de)
HYDRAULISCHE HAMMERVORRICHTUNG
Title (fr)
DISPOSITIF DE BATTAGE, UTILISANT UNE PRESSION HYDRAULIQUE
Publication
Application
Priority
- FI 9600425 W 19960731
- FI 953636 A 19950731
- FI 960434 A 19960130
Abstract (en)
[origin: WO9704926A1] A device generating strokes by hydraulic pressure optionally in two directions and having a to- and from moving piston (5), the travel of which is maintained in steering the hydraulic pressure by means of a reversing valve (12) to produce effect upon transverse faces formed in the piston and the opposite ends of which piston (5), work as strokes transmitting faces. Piston (5, 19) is a ring-shaped piston, in the annular space of which a cylinder space (4, 26) is formed into which at least a portion of the stroke-transmitting body (2, 22) that functions as attachment body for a tool (1) or for the target objects (25) is placed.
IPC 1-7
IPC 8 full level
E21B 7/20 (2006.01); B25D 9/04 (2006.01); B25D 9/12 (2006.01); B25D 17/06 (2006.01); B25D 17/24 (2006.01); E02D 7/10 (2006.01)
CPC (source: EP KR)
B25D 9/04 (2013.01 - KR); B25D 9/12 (2013.01 - EP); B25D 17/06 (2013.01 - EP); E02D 7/10 (2013.01 - EP)
Citation (search report)
See references of WO 9704926A1
Designated contracting state (EPC)
DE ES FI FR GB IT
DOCDB simple family (publication)
WO 9704926 A1 19970213; EP 0885092 A1 19981223; JP H11510101 A 19990907; KR 19990036100 A 19990525
DOCDB simple family (application)
FI 9600425 W 19960731; EP 96924904 A 19960731; JP 50726097 A 19960731; KR 19980700767 A 19980131