EP 2047116 B1 20100714 - FLUID-ACTUATED LINEAR UNIT, IN PARTICULAR LINEAR DRIVE
Title (en)
FLUID-ACTUATED LINEAR UNIT, IN PARTICULAR LINEAR DRIVE
Title (de)
FLUIDBETÄTIGTE LINEAREINHEIT, INSBESONDERE LINEARANTRIEB
Title (fr)
UNITE LINEAIRE ACTIONNEE PAR FLUIDE, NOTAMMENT ENTRAINEMENT LINEAIRE
Publication
Application
Priority
EP 2007000242 W 20070112
Abstract (en)
[origin: WO2008083717A1] A fluid-actuated linear unit is proposed, the linear unit having a piston (6) which forces a fluid out of a working chamber (5) into a control passage (23) when it moves into its final piston position. Final position damping means (32) bring about a braking of the piston (6) and contain a sealing ring (33) which can slide along a sealing surface (35). The sealing surface (35) contains first damping grooves (42) which end before the rear side, and also at least one second damping groove (43) which overlaps axially with the first damping grooves (42) and extends as far as the rear side of the sealing surface (35). By means of the interaction of these damping grooves (42, 43) with the sealing ring (33), a speed-dependent damping characteristic is obtained.
IPC 8 full level
F15B 15/22 (2006.01)
CPC (source: EP)
F15B 15/222 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 2008083717 A1 20080717; CN 101365886 A 20090211; CN 101365886 B 20120425; DE 502007004411 D1 20100826; EP 2047116 A1 20090415; EP 2047116 B1 20100714
DOCDB simple family (application)
EP 2007000242 W 20070112; CN 200780002075 A 20070112; DE 502007004411 T 20070112; EP 07702715 A 20070112