Global Patent Index - EP 1006500 A3

EP 1006500 A3 2001-04-11 - Smoke detector with aspiration unit and flow sensor

Title (en)

Smoke detector with aspiration unit and flow sensor

Title (de)

Rauchmelder mit Absaugeinheit und Durchflussmesser

Title (fr)

Détecteur de fumée avec unité d'aspiration et capteur de débit

Publication

EP 1006500 A3 (EN)

Application

EP 99309678 A

Priority

US 20544098 A

Abstract (en)

[origin: EP1006500A2] A detector includes a smoke sensor and an aspiration unit. The aspiration unit causes ambient air from a region directly adjacent to the detector to flow into a sensing region of the sensor. A flow monitoring sensor provides feedback to a control circuit to vary pulse modulated drive signals coupled to the aspiration unit. A plurality of variable resistance temperature sensors can be used for flow monitoring. Communication with the detector can be carried out via interface circuits. <IMAGE>

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

G08B 17/10

IPC 8 full level (invention and additional information)

G08B 17/103 (2006.01); G08B 17/10 (2006.01)

CPC (invention and additional information)

G08B 29/145 (2013.01); G08B 17/10 (2013.01); G08B 17/113 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 1006500 A2 20000607; EP 1006500 A3 20010411; AU 6314499 A 20000608; CA 2291203 A1 20000604; CN 1256411 A 20000614; JP 2000172964 A 20000623

INPADOC legal status


2002-10-09 [18D] DEEMED TO BE WITHDRAWN

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- Effective date: 20011012

2002-02-28 [REG DE 8566] DESIGNATED COUNTRY DE NOT LONGER VALID

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2002-01-02 [AKX] PAYMENT OF DESIGNATION FEES

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2001-04-11 [AK] DESIGNATED CONTRACTING STATES:

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- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-04-11 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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2000-06-07 [AK] DESIGNATED CONTRACTING STATES:

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- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-06-07 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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- Free Format Text: AL;LT;LV;MK;RO;SI