Method of releasing a sprinkler, and a sprinkler head adapted to the method
AssigneeAktiebolaget Bofors
InventorsLennart Claussen, Tore Boberg
Life of this patent
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Abstract
A method and apparatus for releasing a sprinkler head (1, 2, 3, 5, 6, 7, 8) are disclosed in which a compacted body (14) of fine particles of a material such as antimony is shot by means of a radiation responsive detector (16, 17, 18) and detonator (9, 10, 11, 12, 13) into contact with a hollow glass bulb (4) which normally prevents operation of the sprinkler, thereby shattering the bulb, disintegrating the compacted body and releasing the sprinkler.
Claims6
A method for releasing a fire-protection sprinkler of the type comprising a sprinkler head in which a frangible element normally prevents escape of the extinguishing medium through the sprinkler head, comprising the steps of:
- providing a compacted body of fine, non-explosive particles by compressing separate particles to form a coherent body in which the separate particles retain their identity;
- and
- impelling said compacted body into contact with said frangible element upon detection of conditions indicating the presence of a fire, whereby said frangible element is is shattered sufficiently to release said extinguishing medium and said compacted body is substantially entirely disintegrated into particles of such a size that danger due to flying particles is reduced at short distances from the sprinkler head.
Apparatus for releasing a fire protection sprinkler of the type comprising a sprinkler head in which a frangible element normally prevents escape of the extinguishing medium through the sprinkler head, said apparatus comprising:
- a compacted, coherent body of fine, non-explosive particles in which the separate particles retain their identity;
- means supported by said sprinkler head for impelling said compacted body into contact with said frangible element upon detection of conditions indicating the presence of a fire;
- and
- means responsive to the presence of a fire for actuating said means for impelling, whereby said frangible element is shattered sufficiently to release said extinguishing medium and said compacted body is substantially entirely disintegrated into particles of such a size that danger due to flying particles is reduced at short distances from the sprinkler head.
Dependencies are inferred from the claim text.