EP 0183874 A1 19860611 - Hydraulic percussion tool.
Title (en)
Hydraulic percussion tool.
Title (de)
Hydraulisches Schlagwerkzeug.
Title (fr)
Outil hydraulique de percussion.
Publication
Application
Priority
EP 84114947 A 19841207
Abstract (en)
1. Hydraulic striking tool with an oil feed (14) and an oil outlet (25) and consisting of a housing (1), in which a piston rod (7) is immovably arranged and enclosed by a cylinder (8), which slides on it, bounds a piston space (11), is guided at a spacing from the inside wall of the housing (1) and acts against a tool (4) lying in its prolongation, wherein the oil feed (14) is connected with a bore (16) led axially through the piston rod (7) and ending in transverse bores (18), the oil outlet (25) is connected with the internal space of the housing (1) and wherein a control valve is arranged between the oil feed (14) and the oil outlet (25), characterised thereby, that the piston rod (7) is penetrated by a single axial bore (16) serving the oil feed, that a transverse bore (23) connecting the internal space (24) with the piston space (11) is led through the wall of the cylinder (8), that the control valve is arranged in the piston space (11) and that the end surface of the piston rod (7) acts as driving surface.
Abstract (de)
Das hydraulische Schlagwerkzeug besteht aus einem Gehause (1), in dem eine feststehende Kolbenstange (7) angeordnet ist. Die Kolbenstange (7) ist von einem auf ihr gleitenden Zylinder (8) umschlossen, der in einem Abstand von der Innenwand des Gehäuses geführt ist. Der Zylinder (8) bildet zusammen mit einer Schlagplatte (9) und einem ihn verschließenden Deckel (10) einen Bär, der auf einen Meißel (4) wirkt.
IPC 1-7
IPC 8 full level
CPC (source: EP)
B25D 9/145 (2013.01); B25D 9/20 (2013.01); B25D 2209/002 (2013.01); B25D 2209/005 (2013.01)
Citation (search report)
- [X] AU 478179 B2 19750917
- [X] AU 425300 B2 19720612
- [Y] US 4290489 A 19810922 - LEAVELL CHARLES
- [Y] US 4074777 A 19780221 - ANDERSSON STURE ROLAND, et al
- [A] WO 8404482 A1 19841122 - LANDMARK WEST LTD [JP]
- [A] NL 7700457 A 19780719 - ABRAHAM GIEN EN BERNARD LIONEL
- [A] DE 150463 C
Designated contracting state (EPC)
AT BE CH FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0183874 A1 19860611; EP 0183874 B1 19891025; AT E47552 T1 19891115
DOCDB simple family (application)
EP 84114947 A 19841207; AT 84114947 T 19841207