Global Patent Index - EP 1266164 A1

EP 1266164 A1 2002-12-18 - 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

EP 1266164 A1 (EN)

Application

EP 01953024 A

Priority

  • US 0101493 W
  • US 50696700 A
  • US 12067300 P

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 (main, further and additional classification)

F16K 31/10

IPC 8 full level (invention and additional information)

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 (invention and additional information)

F16K 31/404 (2013.01); G05D 16/2093 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

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

INPADOC legal status


2010-01-27 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20090801

2003-08-13 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030626

2003-05-07 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20030324

2003-05-07 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: 7F 16K 31/10 A

2003-05-07 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: 7F 16K 31/40 B

2002-12-18 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020916

2002-12-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2002-12-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI