Global Patent Index - EP 1266164 A4

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

EP 1266164 A4 20030507 (EN)

Application

EP 01953024 A 20010117

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

F16K 31/10; F16K 31/40

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)

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