EP 2198442 A1 20100623 - HYDRAULIC SPRING-LOADED DRIVE
Title (en)
HYDRAULIC SPRING-LOADED DRIVE
Title (de)
HYDRAULISCHER FEDERSPEICHERANTRIEB
Title (fr)
MÉCANISME HYDRAULIQUE ACCUMULATEUR À RESSORT
Publication
Application
Priority
- EP 2008008285 W 20080930
- DE 102007049758 A 20071016
- DE 102007062291 A 20071221
Abstract (en)
[origin: WO2009049768A1] The invention relates to a hydraulic spring-loaded drive comprising a working cylinder arranged in a working cylinder housing (12), at least one pre-loaded spring (10), at least two pressure pistons (34) that are each arranged in a bore (32) in a sliding displaceable way, and a pressure body (16) arranged concentrically around the working cylinder housing (12), wherein the pre-loaded spring (10) puts fluid present in the bores (32) under pressure by way of the pressure body (16) and the pressure pistons (34). A guide ring (14) is arranged radially between the pressure body (16) and the working cylinder housing (12) such that during tensioning and during release of the pre-loaded spring (10) the guide ring (14) is axially without force and that the pressure body (16) is axially without force when the pre-loaded spring (10) is pre-tensioned.
IPC 8 full level
H01H 33/34 (2006.01)
CPC (source: EP)
H01H 3/301 (2013.01); H01H 33/34 (2013.01)
Citation (search report)
See references of WO 2009049768A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
DE 102007062291 A1 20090423; CN 101933109 A 20101229; CN 101933109 B 20130828; EP 2198442 A1 20100623; EP 2198442 B1 20141217; HU E024572 T2 20160229; JP 2011501057 A 20110106; JP 5512526 B2 20140604; KR 101537021 B1 20150715; KR 20100077164 A 20100707; WO 2009049768 A1 20090423
DOCDB simple family (application)
DE 102007062291 A 20071221; CN 200880111985 A 20080930; EP 08802713 A 20080930; EP 2008008285 W 20080930; HU E08802713 A 20080930; JP 2010529262 A 20080930; KR 20107008104 A 20080930