EP 0084754 A1 19830803 - Back flow preventer for hydraulic conduits.
Title (en)
Back flow preventer for hydraulic conduits.
Title (de)
Rückflussverhinderer für Druckleitungen.
Title (fr)
Disconnecteur pour des canalisations hydrauliques.
Publication
Application
Priority
EP 82420018 A 19820126
Abstract (en)
[origin: US4478236A] The invention concerns a hydraulic disconnector to separate an inflow circuit from outflow from an outflow circuit. Controlled by the membrane, the valve opens the drainage of chamber if the outflow circuit flows back in the direction of the arrow. The spring opens this drainage even if the membrane is punctured.
Abstract (fr)
Commandé par la membrane (3), le clapet (18) ouvre la vidange de chambre (6) si l'aval reflue par (35). Le ressort (26) ouvre cette vidange, même si la membrane (3) est crevée.
IPC 1-7
IPC 8 full level
E03C 1/10 (2006.01)
CPC (source: EP US)
E03C 1/106 (2013.01 - EP US); E03C 1/108 (2013.01 - EP US); Y10T 137/2557 (2015.04 - EP US); Y10T 137/3331 (2015.04 - EP US)
Citation (search report)
- [A] US 4231387 A 19801104 - DIXON ROBERT W
- [A] US 4244392 A 19810113 - GRISWOLD DAVID E, et al
- [A] DE 2854003 A1 19791011 - AMTROL INC
- [A] DE 2925179 A1 19800124 - GRISWOLD CONTROLS
- [A] CH 431407 A 19670228 - GRISWOLD DONALD G [US], et al
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0084754 A1 19830803; EP 0084754 B1 19850925; EP 0084754 B2 19911211; AT E15822 T1 19851015; CA 1210665 A 19860902; DE 3266453 D1 19851031; US 4478236 A 19841023
DOCDB simple family (application)
EP 82420018 A 19820126; AT 82420018 T 19820126; CA 398392 A 19820315; DE 3266453 T 19820126; US 34974882 A 19820218