Global Patent Index - EP 1029174 A1

EP 1029174 A1 2000-08-23 - LIQUID CONTROL VALVE

Title (en)

LIQUID CONTROL VALVE

Title (de)

VENTIL ZUM STEUERN VON FLÜSSIGKEITEN

Title (fr)

VALVE DESTINEE A LA COMMANDE DE LIQUIDES

Publication

EP 1029174 A1 (DE)

Application

EP 99913115 A

Priority

  • DE 9900662 W
  • DE 19826339 A

Abstract (en)

[origin: DE19826339A1] Disclosed is a valve for controlling liquids. The inventive valve can be actuated by a piezo-actuator (53) which acts directly upon a valve member (40) pertaining to said control valve (31). A Peltier element (62) is inserted in the flow of heat from the piezo-actuator (53) to a heat dissipating part of the housing in order to compensate for various differences in length that arise as a result of temperature influences. The Peltier element (62) is controlled by an electric control device (36) in such a way that various temperature- induced differences in the length of the piezo-actuator (53) in relation to those of the housing (2) accommodating the piezo-actuator are at least partially compensated.

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

F02M 59/46; F02M 47/02; F16K 31/00

IPC 8 full level (invention and additional information)

F02M 47/00 (2006.01); F02M 47/02 (2006.01); F02M 51/00 (2006.01); F02M 59/46 (2006.01); F02M 61/16 (2006.01); F16K 31/00 (2006.01); F16K 31/02 (2006.01); H01L 41/04 (2006.01); H02N 2/00 (2006.01); H02N 2/04 (2006.01)

CPC (invention and additional information)

F02M 63/0026 (2013.01); F02M 47/027 (2013.01); F02M 61/167 (2013.01); F16K 31/007 (2013.01); H01L 41/04 (2013.01)

Citation (search report)

See references of WO 9966197A1

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

DE 19826339 A1 19991216; EP 1029174 A1 20000823; JP 2002518640 A 20020625; US 6333586 B1 20011225; WO 9966197 A1 19991223

INPADOC legal status


2004-05-12 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20031107

2003-02-05 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20021218

2000-08-23 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000623

2000-08-23 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT