Fire extinguishers – Automatic receptacles – Mechanical discharge
Patent
1975-07-11
1977-03-15
Love, John J.
Fire extinguishers
Automatic receptacles
Mechanical discharge
169 42, A62C 3730
Patent
active
040119114
ABSTRACT:
A compact portable fire extinguisher is described which distributes through the action of centrifugal force, a fire extinguishing liquid or chemical over a well defined area. In one embodiment of the invention a spring wound bell-shaped dispensing housing is constrained against rotational movement by a band secured to the housing and a non-rotatable bottom plate. The band, which is locked in position by a fusible element, also serves to seal the liquid or chemical dispensing apertures which are peripherally disposed about the bottom portion of the bell-shaped housing. When the fusible element parts in the presence of an abnormally high temperature condition, signaling the presence of an incendiary situation, the band falls away from the bottom plate and the housing simultaneously permitting the spring wound housing to commence rotating and the liquid or chemical extinguisher to be discharged through the peripherally disposed apertures. The rotating bell-shaped housing, through its generated centrifugal force, will expel the extinguishing liquid or chemical in a well defined circular pattern over the burning area.
In other embodiments of the invention the rotating force is supplied through the release of the fire extinguishing substance through jet-like nozzles, so that the reaction force will cause the unit containing the fire extinguishing substance to rotate, or cause the nozzles themselves to rotate, thus dispersing the liquid or chemical extinguisher. Apparatus is also provided for automatically lowering the fire extinguisher from a ceiling or the like when a fire breaks out and retracting it after it has served its function.
REFERENCES:
patent: 347216 (1886-08-01), Westcott et al.
patent: 1241209 (1917-09-01), Grinnell
patent: 1849644 (1932-03-01), Stokes
patent: 3613793 (1971-10-01), Huthsing, Jr.
patent: 3754602 (1973-08-01), Magdars
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