EP 0197467 A3 19881221 - LEAK-FREE BRAKE-CHECK VALVE
Title (en)
LEAK-FREE BRAKE-CHECK VALVE
Publication
Application
Priority
- DE 3512894 A 19850411
- DE 3514007 A 19850418
Abstract (en)
[origin: US4727792A] A hydraulically controllable, leakproof holding valve is disclosed, and which is adapted to be attached in the lifting hydraulic line leading to a working cylinder or the like. The holding valve includes a slidably mounted control piston, which functions as a controlled non-return valve during periods when the working cylinder is stationary or being lifted, and the piston also functions as a throttling valve during periods when the working cylinder is being lowered.
IPC 1-7
IPC 8 full level
F15B 11/08 (2006.01); F15B 13/01 (2006.01)
CPC (source: EP US)
F15B 13/01 (2013.01 - EP US); Y10T 137/7774 (2015.04 - EP US)
Citation (search report)
- [Y] EP 0007712 A1 19800206 - MODULAR CONTROLS CORP [US]
- [Y] FR 2214848 A1 19740819 - CHIVARI ILIE [DE]
- [A] DE 2021857 A1 19711125 - REXROTH GMBH G L
- [A] FR 1588450 A 19700410
- [AD] CH 543028 A 19731015 - BERINGER HYDRAULIK GMBH [CH]
- [AD] DE 3239930 A1 19840510 - REXROTH MANNESMANN GMBH [DE]
Designated contracting state (EPC)
CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0197467 A2 19861015; EP 0197467 A3 19881221; EP 0197467 B1 19920129; DE 3683666 D1 19920312; DK 146986 A 19861012; DK 146986 D0 19860401; DK 166040 B 19930301; DK 166040 C 19930802; JP H0613881 B2 19940223; JP S61274103 A 19861204; US 4727792 A 19880301
DOCDB simple family (application)
EP 86104323 A 19860327; DE 3683666 T 19860327; DK 146986 A 19860401; JP 8320886 A 19860410; US 84911186 A 19860407