Global Patent Index - EP 0694163 A4

EP 0694163 A4 2000-02-23 - DUAL SENSOR AIR-IN-LINE DETECTOR

Title (en)

DUAL SENSOR AIR-IN-LINE DETECTOR

Title (de)

DETEKTOR MIT DOPPELSENSOR FÜR LUFT IN EINER LEITUNG

Title (fr)

DETECTEUR A DEUX CAPTEURS DESTINE A DETECTER LA PRESENCE D'AIR DANS UNE CONDUITE DE LIQUIDE

Publication

EP 0694163 A4 (EN)

Application

EP 95911606 A

Priority

  • GB 9402256 A
  • US 9501424 W

Abstract (en)

[origin: WO9521374A1] A device is provided for the detection of gas, e.g. air in tubing (14) carrying a liquid. The device includes a transmitter (21) for transmitting a light beam to the liquid contained in the tubing (14), and first and second light receivers (20a, 20b) for receiving reflected and transmitted light emitted from the transmitter (21) and which is incident upon the liquid in the tubing. The light receivers are located within a body member (12) around the liquid conducting tubing and each produces a signal according to the condition of the liquid in the tubing. Both receivers produce such a given signal when gas is present in the liquid but each receiver also produces such a signal under a different liquid condition. A processing means (33) is provided which is responsive to the outputs from the two receivers and indicates that gas is present in the tubing only when both provide said given signal.

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

G01N 15/06; A61M 5/36

IPC 8 full level (invention and additional information)

G01V 8/20 (2006.01); A61M 1/36 (2006.01); A61M 5/00 (2006.01); A61M 5/36 (2006.01); G01N 35/10 (2006.01)

CPC (invention and additional information)

A61M 5/365 (2013.01); G01N 2035/1018 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

WO 9521374 A1 19950810; AU 1910995 A 19950821; AU 678709 B2 19970605; CA 2157582 A1 19950810; EP 0694163 A1 19960131; EP 0694163 A4 20000223; GB 9402256 D0 19940330; JP H08508920 A 19960924; NO 953946 A 19951204; NO 953946 D0 19951004; NZ 282105 A 19970922

INPADOC legal status


2005-03-09 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20040901

2000-02-23 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20000112

2000-02-23 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): DE FR GB

2000-02-23 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7G 01N 15/06 A, 7A 61M 5/36 B

1996-01-31 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19950915

1996-01-31 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB