Global Patent Index - EP 1068119 A1

EP 1068119 A1 2001-01-17 - ELECTROMAGNETIC VALVE

Title (en)

ELECTROMAGNETIC VALVE

Title (de)

ELEKTROMAGNETVENTIL

Title (fr)

ELECTROVANNE

Publication

EP 1068119 A1 (DE)

Application

EP 99914545 A

Priority

  • DE 19814307 A
  • DE 19836493 A
  • EP 9902070 W

Abstract (en)

[origin: US6435210B1] The present invention relates to an electromagnetic valve which includes a valve tappet that is axially movably arranged in a valve housing and fastened to a magnetic armature, and a valve piston axially movable in the valve housing, a diaphragm-type pressure fluid passage in the valve piston that is closed or opened by the valve tappet, another unthrottled pressure fluid passage arranged between the valve piston and the valve housing that is closed or opened by the valve piston, pressure fluid channels which open into the valve housing on either side of the valve piston, with both pressure fluid passages closed in the initial position of the electromagnetic valve. The valve piston will open the other, unthrottled pressure fluid passage only if, on the one hand, the hydraulic pressure acting on the valve piston in the valve closing direction is lower than the pressure of a spring fitted to the valve piston and active in the valve opening direction, and if, on the other hand, the pressure fluid passage in the valve piston is opened by the electromagnetic energization of the valve by means of the valve tappet.

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

B60T 8/36; B60T 13/68

IPC 8 full level (invention and additional information)

B60T 8/34 (2006.01); B60T 8/36 (2006.01); B60T 8/48 (2006.01); F16K 31/06 (2006.01)

CPC (invention and additional information)

B60T 8/4881 (2013.01); B60T 8/34 (2013.01); B60T 8/363 (2013.01); Y10T 137/87394 (2015.04); Y10T 137/87507 (2015.04)

Citation (search report)

See references of WO 9950116A1

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

US 6435210 B1 20020820; EP 1068119 A1 20010117; JP 2002509839 A 20020402; WO 9950116 A1 19991007

INPADOC legal status


2003-05-21 [18W] WITHDRAWN

- Effective date: 20030326

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

- Effective date: 20021219

2001-01-17 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001031

2001-01-17 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB