Global Patent Index - EP 0990132 A1

EP 0990132 A1 2000-04-05 - OPTICAL DETECTION OF ENTRAPPED GAS IN A COOLING SYSTEM

Title (en)

OPTICAL DETECTION OF ENTRAPPED GAS IN A COOLING SYSTEM

Title (de)

OPTISCHER NACHWEIS EINES IN EINEM KÜHLSYSTEM EINGESCHLOSSENEN GASES

Title (fr)

DETECTION OPTIQUE D'UN GAZ PIEGE DANS UN SYSTEME DE REFROIDISSEMENT

Publication

EP 0990132 A1 (EN)

Application

EP 98928926 A

Priority

  • US 9811793 W
  • US 4879997 P

Abstract (en)

[origin: WO9855849A1] An optical leak detector (200) for use with a cooling system is described. The optical leak detector includes a light source (203), a light detector (205), and a conversion device (215). The light source is optically coupled to the light detector by way of an optical path (210). The light detector generates an electronic signal in response to light received from the light source. The conversion device, which is attached to the light detector, generates an electronic signal in response to the amount of light received from the light source. This electronic signal can indicate if a leak has occurred in the cooling system by the traversal of a entrapped gas bubble across the optical path formed by the light source and the light detector.

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

G01N 15/00; G01M 3/06

IPC 8 full level (invention and additional information)

F25B 49/02 (2006.01); G01M 3/38 (2006.01)

CPC (invention and additional information)

G01M 3/38 (2013.01)

Designated contracting state (EPC)

AT BE DE DK ES FI FR GB GR IE IT NL SE

EPO simple patent family

WO 9855849 A1 19981210; AU 741819 B2 20011213; AU 8061298 A 19981221; CA 2292561 A1 19981210; CN 1264469 A 20000823; EP 0990132 A1 20000405; EP 0990132 A4 20000726; JP 2002505003 A 20020212; KR 20010013495 A 20010226; PL 337214 A1 20000814

INPADOC legal status


2003-12-03 [18W] WITHDRAWN

- Effective date: 20031001

2000-07-26 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20000613

2000-07-26 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): AT BE DE DK ES FI FR GB GR IE IT NL SE

2000-07-26 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7G 01N 15/00 A, 7G 01M 3/06 B, 7G 01M 3/38 B

2000-04-05 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991227

2000-04-05 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE DE DK ES FI FR GB GR IE IT NL SE