EP 1176315 A3 20031112 - Controllable changeover valve
Title (en)
Controllable changeover valve
Title (de)
Steuerbares Umschaltventil
Title (fr)
Soupape de commutation commandable
Publication
Application
Priority
DE 10035628 A 20000721
Abstract (en)
[origin: EP1176315A2] The piloted switching valve has a first spring element (18) acting upon a valve spool (11) to give a maximum switching pressure, and a pressure reducer (30) acting on the spool in opposition to the first spring element. The pressure reducer has a movable control element (33) and a second spring element (31) to reduce the switching pressure determined by the first spring element to a lower pressure by tensioning of the second spring element. The valve spool connects the outlet line (4) to a first inlet line (2) if the pressure in the first inlet line is greater than the switching pressure, and connects the outlet line to a second inlet line (3) if the pressure is less.
IPC 1-7
IPC 8 full level
F15B 11/028 (2006.01)
CPC (source: EP)
F15B 11/028 (2013.01); F15B 2211/20553 (2013.01); F15B 2211/25 (2013.01); F15B 2211/30525 (2013.01); F15B 2211/3111 (2013.01); F15B 2211/3127 (2013.01); F15B 2211/327 (2013.01); F15B 2211/355 (2013.01); F15B 2211/6355 (2013.01)
Citation (search report)
- [A] US 4756156 A 19880712 - APPEL WILHELM [DE]
- [AD] DE 19642567 C1 19970821 - BRUENINGHAUS HYDROMATIK GMBH [DE]
- [A] US 4420011 A 19831213 - ROGER HARRY [US]
- [A] EP 0740083 A2 19961030 - BRUENINGHAUS HYDROMATIK GMBH [DE]
- [A] DE 3933393 A1 19910418 - TEVES GMBH ALFRED [DE]
- [A] US 5333451 A 19940802 - SAKIKAWA SHIGENORI [JP], et al
- [A] DE 3307242 A1 19840906 - BOSCH GMBH ROBERT [DE]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1176315 A2 20020130; EP 1176315 A3 20031112; EP 1176315 B1 20041229; DE 10035628 A1 20020207; DE 10035628 C2 20020606; DE 50104934 D1 20050203
DOCDB simple family (application)
EP 01111865 A 20010516; DE 10035628 A 20000721; DE 50104934 T 20010516