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US 2006/0187000 A1Published application
Fire fighting apparatus
OwnerPeter Fitzpatrickinventor
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OwnerPeter Fitzpatrickinventor
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An apparatus for fighting a fire comprises a suspendible container (10) having a perforated lower surface (12) each of whose perforations (16) is closed by a heat-sensitive membrane (14) which is capable of rupture at an elevated temperature. The container contains a fire retardant material which is released upon rupture of the membrane. The apparatus further includes an electric heater (22) adjacent the membrane and a smoke detector (24) controlling the heater such that upon the detection of smoke the heater is switched on to rupture the membrane. A second embodiment has at least one further heat-sensitive membrane embedded in the fire retardant material above the first membrane such that a respective layer of fire retardant material lies above each membrane. Thus, upon rupture of the first membrane the layer of fire retardant material immediately above it is released and the further membrane comes to rest upon the lower surface of the container, the layer of fire retardant material immediately above the further membrane being released only upon subsequent rupture of the further membrane.
An apparatus for fighting a fire comprising a suspendible container having a perforated lower surface each of whose perforations is closed by a heat-sensitive membrane which is capable of rupture at an elevated temperature, the container containing a fire retardant material which is released upon rupture of the membrane, the apparatus further including an electric heater adjacent the membrane and a smoke detector controlling the heater such that upon the detection of smoke the heater is switched on to rupture the membrane.
An apparatus for fighting a fire comprising a suspendible container having a perforated lower surface each of whose perforations is closed by a first heat-sensitive membrane which is capable of rupture at an elevated temperature, the container containing a fire retardant material which is released upon rupture of the membrane, the apparatus further including at least one further heat-sensitive membrane embedded in the fire retardant material above the first membrane such that a respective layer of fire retardant material lies above each membrane, whereby upon rupture of the first membrane the layer of fire retardant material immediately above it is released and the further membrane comes to rest upon the lower surface of the container, the layer of fire retardant material immediately above the further membrane being released only upon subsequent rupture of the further membrane.
Dependencies are inferred from the claim text.