EP 1266164 A4 20030507 - EXTENDED RANGE PROPORTIONAL VALVE
Title (en)
EXTENDED RANGE PROPORTIONAL VALVE
Title (de)
PROPORTIONALVENTIL MIT ERWEITERTEM SCHALTBEREICH
Title (fr)
ROBINET DOSEUR A PLAGE DE REGLAGE ETENDUE
Publication
Application
Priority
- US 0101493 W 20010117
- US 50696700 A 20000218
- US 12067300 P 20000219
Abstract (en)
[origin: WO0161226A1] An extended range proportional valve (10) which can control rates of mass flow over continuous low, intermediate, and high ranges has a pilot member (68) mounted on an armature (84) of a solenoid which can be dithered onto and off of a pilot opening (58) in a main valve member (30) which seals a main valve opening (18) to control mass flow rates over the low range by varying the duty cycle and/or frequency of a pulse width modulated current in the solenoid coil. Intermediate and high flow rates are achieved by dithering the pilot valve member (68) with a duty cycle and/or frequency sufficient to raise the main valve member (30) relatively short and relatively long respective distances from the main valve seat (18).
IPC 1-7
IPC 8 full level
F16K 31/06 (2006.01); F16K 31/40 (2006.01); F16K 31/42 (2006.01); G05D 7/06 (2006.01); G05D 16/20 (2006.01)
CPC (source: EP US)
F16K 31/404 (2013.01 - EP US); G05D 16/2095 (2018.12 - EP US)
Citation (search report)
- [X] US 3872878 A 19750325 - KOZEL JAMES A, et al
- [X] EP 0360569 A2 19900328 - CARADON MIRA LTD [GB]
- [X] WO 9001651 A1 19900222 - KANBAYASHI SEISAKUSHO KK [JP]
- [X] US 5716038 A 19980210 - SCARFFE MICHAEL FREDERICK [GB]
- [X] EP 0251479 A1 19880107 - BORG WARNER AUTOMOTIVE [US]
- [DA] US 5676342 A 19971014 - OTTO NOEL [US], et al
- [A] US 4248270 A 19810203 - OSTROWSKI E A
- [A] EP 0628742 A1 19941214 - EATON CORP [US]
- [A] US 5035119 A 19910730 - ALSENZ RICHARD H [US]
- See references of WO 0161226A1
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)
WO 0161226 A1 20010823; AU 2954801 A 20010827; CN 1188619 C 20050209; CN 1425114 A 20030618; EP 1266164 A1 20021218; EP 1266164 A4 20030507; JP 2003526055 A 20030902
DOCDB simple family (application)
US 0101493 W 20010117; AU 2954801 A 20010117; CN 01808242 A 20010117; EP 01953024 A 20010117; JP 2001560045 A 20010117