Concealed sprinkler assembly
AssigneeCentral Sprinkler Corporation
InventorJames R. Anderson
Life of this patent
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Abstract
A concealed, flush mounted sprinkler is disclosed which comprises a slidable deflector which, in the event of fire, is extended to an operating position by means of a compressed spring. The nozzle, a thermally responsive element, and the deflector of the sprinkler reside within a receptacle having an outer cover against which the deflector is continuously pressured by means of the spring. The cover is attached to the receptacle by means of a fusible eutectic alloy, and as the alloy begins to soften and become elastic during a fire, the compressed spring aids detachment of the cover from the receptacle while simultaneously sliding the deflector to an operating position beyond the ceiling or sidewall in which the sprinkler is mounted.
Claims12
A sprinkler of the flush mounted type which comprises:
- a. a sprinkler body having a nozzle therein,
- b. a bracket attached to the sprinkler body,
- c. an outer cover plate attached to the bracket by means of a bonding material having a relatively low softenpoint,
- d. a deflector which rests against the cover in a normally retracted position and which is also positioned to intercept and divert a stream of liquid discharged from the nozzle, the deflector being slidable away from the nozzle with respect to the discharge axis thereof, and
- e. urging means whereby said deflector is continuously pressed against the cover for aiding the detachment thereof from the bracket upon softening of the bonding material, and whereby the deflector is slid into an operating position upon detachment of the cover.
Dependencies are inferred from the claim text.