EP 0934804 B1 20060111 - Fluid driven percussion device
Title (en)
Fluid driven percussion device
Title (de)
Druckmittelbetriebene Schlagvorrichtung
Title (fr)
Dispositif à percussion actionné par fluide
Publication
Application
Priority
DE 19803449 A 19980130
Abstract (en)
[origin: US6959967B1] A fluid-powered impact vibrator ( 5 ), in particular a hydraulic hammer, comprising a fluid-powered percussion hammer ( 8 ) with a percussion piston ( 18 ) that is moved back and forth under the effect of a control means ( 10 ) and comprising a guide unit ( 7 ) on which the percussion hammer is supported, wherein the impact vibrator is additionally provided with a control valve, designed as a pressure monitor, for adaptation to the supplied input power. The control valve preferably is a pressure shut-off valve or a pressure-limiting valve ( 25 ) that is connected to the input pressure line ( 3 ) provided with the operating pressure, and automatically stops the percussion hammer ( 8 ) if the operating pressure resulting from the input power exceeds a specified maximum value. To stop the percussion hammer ( 8 ), either the pressure line ( 3 ) is blocked or the control means ( 10 ) is held in one of its end positions, i.e., the operating stroke or the return stroke positions. Moreover, the pressure shut-off valve or the pressure-limiting valve ( 25 ) preferably is a component of the guide unit, consisting of a support frame ( 7 ), or the percussion hammer ( 8 ) itself.
IPC 8 full level
B25D 9/26 (2006.01); B25D 17/10 (2006.01); E21B 1/26 (2006.01)
CPC (source: EP US)
B25D 9/26 (2013.01 - EP US)
Designated contracting state (EPC)
AT CH DE ES FI FR GB IT LI NL SE
DOCDB simple family (publication)
US 6959967 B1 20051101; AT E315457 T1 20060215; DE 19803449 A1 19990805; DE 59913032 D1 20060406; EP 0934804 A2 19990811; EP 0934804 A3 20030305; EP 0934804 B1 20060111; ES 2257827 T3 20060801
DOCDB simple family (application)
US 23873599 A 19990128; AT 99101199 T 19990122; DE 19803449 A 19980130; DE 59913032 T 19990122; EP 99101199 A 19990122; ES 99101199 T 19990122