EP 0522344 A2 19930113 - Hydraulic impact hammer.
Title (en)
Hydraulic impact hammer.
Title (de)
Hydraulischer Schlaghammer.
Title (fr)
Marteau à coup hydraulique.
Publication
Application
Priority
FI 913311 A 19910709
Abstract (en)
The invention relates to a hydraulic impact hammer, particularly to the housing structure of a hydraulic impact hammer, which structure comprises a hydraulically operated piston (7, 19) and a member (1, 11) for guiding the piston, an impact member (8, 20) and a member (2, 12) for guiding the impact member, the said structure being encased in a protective casing (6, 18). According to the invention, the piston-guiding member (1, 11) and the member (2, 12) guiding the impact member are made separate (3, 15) with respect to each other in order to prevent the proceeding of the tension wave reflected from the impact member (8, 20). However, the piston-guiding member (1, 11) and the member (2, 12) guiding the impact member are interconnected so that the piston-guiding member (1, 11) and the member (2, 12) guiding the impact member are both connected to at least one attenuating element (4, 5; 14, 16, 17). <IMAGE>
IPC 1-7
IPC 8 full level
B25D 17/08 (2006.01); B25D 17/24 (2006.01)
CPC (source: EP)
B25D 17/08 (2013.01); B25D 17/24 (2013.01)
Designated contracting state (EPC)
DE ES FR GB IT SE
DOCDB simple family (publication)
EP 0522344 A2 19930113; EP 0522344 A3 19930728; EP 0522344 B1 19970827; DE 69221788 D1 19971002; DE 69221788 T2 19980115; ES 2104773 T3 19971016; FI 913311 A0 19910709; FI 913311 A 19930110; FI 91944 B 19940531; FI 91944 C 19940912; JP H05185380 A 19930727; JP H0777709 B2 19950823
DOCDB simple family (application)
EP 92110512 A 19920622; DE 69221788 T 19920622; ES 92110512 T 19920622; FI 913311 A 19910709; JP 20321792 A 19920708