Global Patent Index - EP 0930434 A3

EP 0930434 A3 2000-05-24 - Metering type electromagnetic pump

Title (en)

Metering type electromagnetic pump

Title (de)

Elektromagnetische Dosierpumpe

Title (fr)

Pompe doseuse électromagnétique

Publication

EP 0930434 A3 (EN)

Application

EP 99100306 A

Priority

JP 2281998 A

Abstract (en)

[origin: EP0930434A2] It is sought to accurately control the discharge rate of a pump according to the frequency of a current pulse output applied to an electromagnetic coil. The pump comprises an electromagnetic solenoid 13, a plunger 18 driven thereby, a check valve 2 disposed downstream the plunger 18 and driven by the electromagnetic solenoid 13, and an suction valve 17 provided in the plunger 18 and a discharge valve 8 provided in an inner yoke 6, the check valve 2 being opened when a current pulse output for energizing the electromagnetic solenoid 13 is turned on, thus causing a discharge stroke of the plunger 18. <IMAGE>

IPC 1-7 (main, further and additional classification)

F04B 17/04; F04B 13/00

IPC 8 full level (invention and additional information)

F02M 51/04 (2006.01); F04B 13/00 (2006.01); F04B 17/04 (2006.01); F16K 31/06 (2006.01)

CPC (invention and additional information)

F02M 51/04 (2013.01); F04B 13/00 (2013.01); F04B 17/046 (2013.01)

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

EPO simple patent family

EP 0930434 A2 19990721; EP 0930434 A3 20000524; JP 4203138 B2 20081224; JP H11210618 A 19990803; KR 19990067962 A 19990825

INPADOC legal status


2000-11-08 [18W] WITHDRAWN

- Date of withdrawal: 20000915

2000-05-24 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

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

2000-05-24 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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

1999-07-21 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

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

1999-07-21 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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