Global Patent Index - EP 1101081 A1

EP 1101081 A1 2001-05-23 - APPARATUS AND METHOD FOR DETECTING THE LEVEL OF A LIQUID

Title (en)

APPARATUS AND METHOD FOR DETECTING THE LEVEL OF A LIQUID

Title (de)

VORRICHTUNG UND METHODE ZUR DETEKTION EINES FLÜSSIGKEITSNIVEAUS

Title (fr)

APPAREIL ET PROCEDE DE DETECTION DU NIVEAU D'UN LIQUIDE

Publication

EP 1101081 A1 (EN)

Application

EP 99921011 A

Priority

  • GB 9901476 W
  • GB 9813429 A

Abstract (en)

[origin: WO9967603A1] Light from a light source (2) is conducted through a light conducting element (4) which is partially submerged in a liquid (12). Light escaping from the light conducting element (4) is scattered by the meniscus (14) of the liquid and the scattered light is collected by a lens (6) and focused to form an image at a detector (8). The meniscus appears as a bright band in the image formed at the detector (8) and the position of the band in the image is used to determine the level of the liquid.

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

G01F 23/00

IPC 8 full level (invention and additional information)

G01F 23/292 (2006.01)

CPC (invention and additional information)

G01F 23/292 (2013.01)

Citation (search report)

See references of WO 9967603A1

Designated contracting state (EPC)

DE GB IT

EPO simple patent family

WO 9967603 A1 19991229; AU 3838699 A 20000110; BR 9911425 A 20010320; CA 2335531 A1 19991229; EP 1101081 A1 20010523; GB 9813429 D0 19980819

INPADOC legal status


2003-11-05 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20030501

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

- Effective date: 20021220

2001-05-23 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001219

2001-05-23 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE GB IT