Global Patent Index - EP 1097326 A2

EP 1097326 A2 2001-05-09 - SAFETY DEVICE FOR CUTTING OFF GAS PIPELINES

Title (en)

SAFETY DEVICE FOR CUTTING OFF GAS PIPELINES

Title (de)

SICHERHEITSEINRICHTUNG ZUM ABSPERREN VON GASFÜHRENDEN LEITUNGSSYSTEMEN

Title (fr)

DISPOSITIF DE SECURITE POUR FERMER DES CANALISATIONS TRANSPORTANT DU GAZ

Publication

EP 1097326 A2 (DE)

Application

EP 99932853 A

Priority

  • DE 19831283 A
  • EP 9904808 W

Abstract (en)

[origin: WO0004310A2] The invention relates to a thermal security device for cutting off gas pipelines, wherein gas transfer is prevented by said safety device when temperature increases in the section of the gas pipeline placed downstream from said security device, especially when connected gas apparatuses are in a closed position. The aim of the invention is to maintain production costs and dimensions at a level as low as possible. The inventive device comprises a check valve which prevents back flow from the gas pipeline which is placed downstream from said device. The inventive device also comprises a pressure sensitive element which is actuated by the pressure in the pipeline placed downstream from said safety device. Said pressure sensitive element is coupled to a cut-off valve in such a way that when pressure increases in the downstream pipeline said valve prevents gas from flowing into the pipeline. The inventive safety device is used to cut off automatically gas pipelines when temperature increases in an unacceptable way in the section of the pipeline which is placed downstream from said safety device.

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

F16K 1/00

IPC 8 full level (invention and additional information)

F16K 17/38 (2006.01)

CPC (invention and additional information)

F16K 17/38 (2013.01); F16K 17/386 (2013.01); Y10T 137/1963 (2015.04); Y10T 137/2012 (2015.04); Y10T 137/7724 (2015.04); Y10T 137/7737 (2015.04); Y10T 137/88054 (2015.04)

Citation (search report)

See references of WO 0004310A2

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

WO 0004310 A2 20000127; WO 0004310 A3 20000608; BR 9912048 A 20010502; CA 2337410 A1 20000127; CZ 20010020 A3 20010815; DE 19831283 C1 20000224; EP 1097326 A2 20010509; HU 0103970 A2 20020228; HU 0103970 A3 20020328; JP 2002520563 A 20020709; PL 346128 A1 20020128; TR 200100040 T2 20010521; US 6550495 B1 20030422

INPADOC legal status


2008-02-15 [REG HK WD] APPLICATIONS WITHDRAWN, DEEMED TO BE WITHDRAWN, OR REFUSED AFTER PUBLICATION IN HONG KONG

- Document: HK 1035765

2005-03-30 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20040921

2003-03-19 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030204

2001-05-09 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001227

2001-05-09 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

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