EP 2297756 A1 20110323 - HYDRAULIC STORED-ENERGY SPRING MECHANISM
Title (en)
HYDRAULIC STORED-ENERGY SPRING MECHANISM
Title (de)
HYDRAULISCHER FEDERSPEICHERANTRIEB
Title (fr)
ENTRAÎNEMENT HYDRAULIQUE À ACCUMULATEUR À RESSORT
Publication
Application
Priority
- EP 2009004778 W 20090702
- DE 102008032143 A 20080708
Abstract (en)
[origin: WO2010003589A1] The invention relates to a hydraulic stored-energy spring mechanism for a heavy-duty circuit breaker, comprising a working cylinder (40) which is arranged in a working cylinder housing (12), at least one accumulator spring (10), and at least one pressure piston (34) which is arranged in an accumulator cylinder (32) such that it can slide. In this case, the accumulator spring (10) pressurizes fluid, which is located in accumulator cylinder (32), by means of the pressure piston (34). The accumulator spring (10) is held in an interlocking manner in the prestressed state by a support pipe unit.
IPC 8 full level
H01H 3/30 (2006.01); H01H 33/34 (2006.01)
CPC (source: EP KR US)
H01H 3/301 (2013.01 - EP US); H01H 3/34 (2013.01 - KR); H01H 33/34 (2013.01 - KR); H01H 33/34 (2013.01 - EP US)
Citation (search report)
See references of WO 2010003589A1
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 MK MT NL NO PL PT RO SE SI SK SM TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
DE 102008032143 A1 20100114; CN 102089840 A 20110608; EP 2297756 A1 20110323; KR 20110031186 A 20110324; US 2011132187 A1 20110609; WO 2010003589 A1 20100114
DOCDB simple family (application)
DE 102008032143 A 20080708; CN 200980127084 A 20090702; EP 09776920 A 20090702; EP 2009004778 W 20090702; KR 20117000460 A 20090702; US 98654211 A 20110107