EP 1776212 B1 20150819 - STRIKING DEVICE, IN PARTICULAR A HYDRAULIC HAMMER, DRIVEN BY A PRESSURE MEDIUM
Title (en)
STRIKING DEVICE, IN PARTICULAR A HYDRAULIC HAMMER, DRIVEN BY A PRESSURE MEDIUM
Title (de)
DRUCKMITTELBETRIEBENE SCHLAGVORRICHTUNG, INSBESONDERE HYDRAULIKHAMMER
Title (fr)
OUTIL A PERCUSSION ENTRAINE PAR LA PRESSION D'UN FLUIDE, NOTAMMENT UN MARTEAU HYDRAULIQUE
Publication
Application
Priority
- DE 2005001166 W 20050702
- DE 102004035306 A 20040721
Abstract (en)
[origin: WO2006007811A1] The invention relates to a striking device (5) comprising a striking mechanism (8) which is driven by a pressure medium. Said device comprises a percussion piston (13) which can be displaced back and forth by means of a control device and a control valve which is embodied as a pressure shut-off valve (19) or as a stop valve, said control valve automatically stopping the striking mechanism if it exceeds a predetermined maximum value based on the working pressure controlling the inlet line, blocking the pressure line (3) or maintaining the control device in one of the end positions thereof. The inventive striking device also comprises a hydraulic catcher buffer which is used to brake the percussion piston when it exceeds a predetermined impact plane. According to the invention, the control valve must remain deactivated at least as long as the percussion piston is displaced on the hydraulic catcher buffer.
IPC 8 full level
B25D 9/26 (2006.01)
CPC (source: EP US)
B25D 9/265 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES FI FR GB IT
DOCDB simple family (publication)
WO 2006007811 A1 20060126; DE 102004035306 A1 20060316; EP 1776212 A1 20070425; EP 1776212 B1 20150819; ES 2551010 T3 20151113; JP 2008506543 A 20080306; JP 4942652 B2 20120530; US 2008296035 A1 20081204; US 7779930 B2 20100824
DOCDB simple family (application)
DE 2005001166 W 20050702; DE 102004035306 A 20040721; EP 05763325 A 20050702; ES 05763325 T 20050702; JP 2007521778 A 20050702; US 65807105 A 20050702