Global Patent Index - EP 1027558 A1

EP 1027558 A1 2000-08-16 - A SAFETY CUT-OFF DEVICE

Title (en)

A SAFETY CUT-OFF DEVICE

Title (de)

SICHERHEITSSTOPVORRICHTUNG

Title (fr)

DISPOSITIF A ARRET DE SECURITE

Publication

EP 1027558 A1 (EN)

Application

EP 97938808 A

Priority

DK 9700366 W

Abstract (en)

[origin: WO9911979A1] Safety cut-off devices using a thermoelectric voltage generated by a sensor in a flame are known. As long as the flame heats the sensor it generates a holding current for a magnetic valve. When the sensor cools down due to loss of flame, the valve closes as the holding current disappears. Such safety devices have a long time constant so that too much gas escapes after the flame has extinguished. The invention provides for a sensor with a small time constant which by means of a transistor controls a current generated by a series connection of thermoelements. In this manner a safer device is obtained.

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

F23N 5/10; F23D 14/72; F24C 3/12

IPC 8 full level (invention and additional information)

F23D 14/72 (2006.01); F23N 5/10 (2006.01); F24C 3/12 (2006.01)

CPC (invention and additional information)

F23N 5/102 (2013.01); F23D 14/72 (2013.01); F24C 3/126 (2013.01)

Citation (search report)

See references of WO 9911979A1

Designated contracting state (EPC)

DE DK ES IT

EPO simple patent family

WO 9911979 A1 19990311; AU 4113097 A 19990322; DE 69710229 D1 20020314; DE 69710229 T2 20021024; DK 1027558 T3 20020506; EP 1027558 A1 20000816; EP 1027558 B1 20020130; ES 2171990 T3 20020916

INPADOC legal status


2010-01-29 [PG25 ES] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2003-01-22 [26N] NO OPPOSITION FILED

2002-09-16 [REG ES FG2A] DEFINITIVE PROTECTION

- Document: ES 2171990 T3

2002-05-06 [REG DK T3] TRANSLATION OF EP PATENT

2002-03-14 [REF] CORRESPONDS TO:

- Document: DE 69710229 20020314

2002-01-30 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

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2001-05-02 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010322

2000-08-16 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000403

2000-08-16 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE DK ES IT