| Patents for A62C 4 - Flame traps allowing passage of gas but not of flame or explosion wave (753) |
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| 04/16/2003 | CN1410139A Gas pipeline fire arrester having automatic safety valve |
| 04/09/2003 | EP1300591A2 Mechanical pump with integrated flame arrester |
| 04/01/2003 | US6540029 Deflagration and explosion suppression and isolation apparatus for contained hazardous material |
| 03/20/2003 | WO2003022363A1 Detonation flame arrestor including a spiral wound wedge wire screen for gases having a low mesg |
| 03/20/2003 | WO2002078788A3 Fire and explosion suppression |
| 03/06/2003 | US20030044740 Detonation flame arrestor including a spiral wound wedge wire screen for gases having a low MESG |
| 03/05/2003 | CN2538379Y Spark, dust bowl preventing device for dust collector |
| 02/06/2003 | WO2003009900A1 Security system against fire for domestic and industrial chimney |
| 01/30/2003 | US20030022116 Flame arrestor with reflection suppressor |
| 01/16/2003 | US20030010000 Method and apparatus for pyrophoric and other type gas line explosion suppression |
| 12/03/2002 | US6488048 Explosion relief valve |
| 10/30/2002 | CN2519082Y Flashback-proof automatic safety valve for gas pipe |
| 10/24/2002 | DE10112957A1 Flammensperrenanordnung Flame arrestor assembly |
| 10/16/2002 | CN2516833Y Back-fire relief valve |
| 10/10/2002 | WO2002078788A2 Fire and explosion suppression |
| 10/10/2002 | DE10213865A1 Explosion-protection valve has housing containing movable closing body which is held open but moved into closing position on exceeding closing force when detent catch device is released |
| 09/19/2002 | US20020129947 Flame barrier arrangement |
| 09/18/2002 | EP1240923A1 Flame trap |
| 09/18/2002 | EP1239924A2 Method and device for damping the pressure surge on flame arresters in the case of detonations |
| 09/18/2002 | CN1090978C Dry-type back-fire preventer with dal-valve linkage and medium pressure for acetylene and method for mfg. its fire stopping sleeve |
| 09/06/2002 | WO2002067743A1 Deflagration and explosion suppression and isolation apparatus for contained hazardous material |
| 08/29/2002 | US20020117312 Deflagration and explosion suppression and isolation apparatus for contained hazardous material |
| 08/21/2002 | CN2506295Y Safety flame trap for oxygen mixing gas combustion |
| 07/24/2002 | EP1224013A2 Method and device for dampening the pressure surge on flame arresters during detonations |
| 06/25/2002 | US6409779 Method for rendering a detonation front harmless |
| 06/06/2002 | DE10151584A1 Pressure relief flap has pivot mounted pendulum flap movable from open position by spring action or automatically by the gravity force acting upon it into closed position closing off free cross section of pressure relief duct |
| 05/10/2002 | WO2001041876A3 Method and device for dampening the pressure surge on flame arresters during detonations |
| 05/08/2002 | DE10108537A1 Heat-controlled valve for shutting of gas flow from tank in case of fire has T-shaped sealing component whose stem fits into recess in mounting and is held in place against action of spiral spring by layer of heat-sensitive material |
| 05/02/2002 | EP0649327B2 Flame arrestor apparatus |
| 04/04/2002 | WO2002026327A1 Insert for a detonation/flame arrester |
| 01/29/2002 | US6342082 Safety device in containers or pipes, housings with flanges, flame arresters and pipes |
| 01/23/2002 | CN1332649A Flame arrester |
| 01/16/2002 | CN2471354Y Automatic fire board |
| 01/03/2002 | US20020000249 Explosion relief valve |
| 12/06/2001 | WO2001037933A3 Method and device for damping the pressure surge on flame arresters in the case of detonations |
| 11/29/2001 | WO2001090644A1 Flash suppressor for hot water heater |
| 11/20/2001 | US6318475 Flames and fumes stopping device for suction ducts |
| 11/15/2001 | WO2001085259A1 Fire extinguisher |
| 10/31/2001 | CN2456749Y Preventor of acetylene flashback |
| 10/30/2001 | US6309209 Flash suppressor for hot water heater |
| 10/24/2001 | CN2455278Y Detachable fireproof stop valve for kitchen |
| 09/26/2001 | CN2449753Y Ring type flame trap |
| 09/18/2001 | US6290490 Flash suppressor for hot water heater |
| 09/05/2001 | EP1128874A1 Flame arrester |
| 08/22/2001 | EP0760701B1 Flame-proof device |
| 06/28/2001 | DE19957837A1 Verfahren und Vorrichtung zum Dämpfen des Druckstoßes an Flammensperren bei Detonationen Method and device for damping the pressure surge of flame arrestors in detonations |
| 06/21/2001 | DE19957836A1 Verfahren und Vorrichtung zum Dämpfen des Druckstoßes an Flammensperren bei Detonationen Method and device for damping the pressure surge of flame arrestors in detonations |
| 06/14/2001 | WO2001041876A2 Method and device for dampening the pressure surge on flame arresters during detonations |
| 06/13/2001 | DE19957407A1 Fire protection valve for gas pipeline has valve closure held in open position against spring bias via retaining element which melts or vaporizes at given temperature |
| 05/31/2001 | WO2001037933A2 Method and device for damping the pressure surge on flame arresters in the case of detonations |
| 05/16/2001 | CN2430181Y Back fire anti-explosion device for liquefied petroleum gas of vehicles |
| 05/10/2001 | US20010000837 By conveying via a pipe stub the detonation front so it impinges on a portion of a flame-arresting device having diameter larger than the pipeline, and permitting the front to expand so deflagration impinges on periphery of the device |
| 04/19/2001 | DE10046998A1 Fire protection valve for gas heater has dam body associated with spring-loaded valve body and triggered by detent connection to shut off gas pipe |
| 03/20/2001 | US6202667 Apparatus and method for stopping the propagation of ignited flammable gas in a conduit |
| 03/08/2001 | DE4118481C2 Absperrgerät für Flüssigkeiten und Gase in Rohren Shut-off device for liquids and gases in pipes |
| 12/19/2000 | US6161564 Fire transmission prevention system |
| 12/13/2000 | CN1059351C Fire-extinguishing method and installation |
| 10/18/2000 | EP1044703A2 Flame trap |
| 10/18/2000 | CN2401211Y Gas pipe explosion-resistant device with explosion wave attenuator |
| 10/18/2000 | CN2401210Y Explosion-resistant fire-stopping device for domestic pipe gasmeter |
| 10/18/2000 | CN1270070A Fireproof railings |
| 10/10/2000 | US6129105 Interrupter having an anti-fire valve member for a gas meter, and a gas meter fitted with such an interrupter |
| 09/28/2000 | WO2000056406A1 Detonation flame arrester |
| 09/27/2000 | EP1039187A2 Improvements in flame arresters |
| 09/21/2000 | DE19912326C1 Thermal safety system for a gas pipe has a housing inserted into the pipe containing an insert body and a sealing body with sliding movement held together by solder pins against the reassertion force of a spring |
| 08/23/2000 | EP1029561A2 Method and installation for removing smoke from a monitored space |
| 08/22/2000 | US6105678 Heat responsive fire extinguishing assembly for a ventilating duct |
| 08/01/2000 | US6095492 Valve for an explosion protection apparatus |
| 07/26/2000 | CN1261004A Dry-type back-fire preventer with dual-valve linkage and medium pressure for acetylene and technology for manufacturing its fire-stopping sleeve |
| 07/12/2000 | CN2386838Y Double-control drying backfire arrestor |
| 05/18/2000 | WO2000027479A1 Flame arrester |
| 05/03/2000 | CN1251890A Explosiveproof pressure reducing valve |
| 04/27/2000 | DE19946213A1 Explosion relief valve for use in an internal combustion engine, includes expanded metal perforate wall to direct the gas flow towards the wall of the protected space |
| 03/02/2000 | DE19837146A1 Fire protection system for a passage to take a pipe carrying a gas has a sprung barrier body held in the open position by a thermoplastic holder body which distorts through heat to release it |
| 11/11/1999 | DE19818572C1 Verfahren zum Unschädlichmachen einer Detonationsfront und Detonationssicherung A method for rendering harmless a detonation front and detonation safety |
| 11/04/1999 | DE19919026A1 Pressure-release valve |
| 10/27/1999 | EP0951922A2 Process for making harmless an explosive wave front and flame trap |
| 09/28/1999 | US5959193 Explosion protection apparatus with electrical initiation |
| 09/02/1999 | WO1999043972A1 Method and apparatus for extinguishing combustion within combustible tubing |
| 08/18/1999 | EP0935981A1 Flame and fumes stopping device for suction ducts |
| 07/27/1999 | US5927312 Method and apparatus for extinguishing combustion within combustible tubing |
| 07/13/1999 | US5921323 Chimney fire access device |
| 05/19/1999 | CN2319083Y Folding panel smoke outlet |
| 05/18/1999 | US5905227 Method and system for weakening a detonation in a container or piping system |
| 04/14/1999 | CN2313618Y Chemical expansion fireproof ring |
| 03/03/1999 | CN1209345A Mirco-aperture fire-retardant anti-explosion component made of sintered metal wire-mesh screen |
| 01/20/1999 | EP0836702B1 Cut-off member with a fire-protection valve for a gas meter, and gas meter provided therewith |
| 12/16/1998 | EP0883746A1 Vapor recovery pump |
| 11/25/1998 | CN2298033Y Control device for fire discharge smoke mouth |
| 11/24/1998 | CA2120025C Fire-protection valve with shutting spring for automatically shutting off conduits |
| 11/18/1998 | CN2297623Y Safety fire-proof device for medical hydrogen-oxygen filling and sealing machine |
| 10/06/1998 | US5816333 Flame barrier device |
| 09/09/1998 | CN1192804A Cut-off member with a fire-protection valve for a gas meter, and gas meter provided therewith |
| 08/13/1998 | DE19703308A1 Fire and explosion-retardant safety netting |
| 05/19/1998 | US5752812 Vapor recovery pump |
| 04/22/1998 | EP0836702A1 Cut-off member with a fire-protection valve for a gas meter, and gas meter provided therewith |
| 03/18/1998 | CN2276561Y Quick inflation sealing device for providing disaster relief |
| 03/17/1998 | US5728967 Suppressing explosions and installation |
| 02/18/1998 | EP0824027A1 Explosion protection device with electric triggering |
| 02/13/1998 | CA2212783A1 Explosion protection apparatus with electrical initiations |