Fire extinguishers – Sprinkler heads
Reexamination Certificate
2006-05-04
2008-03-18
Nguyen, Dinh Q. (Department: 3752)
Fire extinguishers
Sprinkler heads
C169S041000, C169S057000, C169S042000, C239S498000, C239S504000
Reexamination Certificate
active
07343980
ABSTRACT:
An enhanced protection extended coverage pendent fire protection sprinkler has a body including a fluid passage and an output orifice sealed with a seal cap, two arms extending from the body and meeting at a hub, a release mechanism with a thermally-responsive element positioned between the seal cap and the hub, and a deflector positioned on the hub and facing the output orifice. The deflector includes a pair of aligned slots, aligned with a plane of the arms, and a pair of perpendicular slots, perpendicular to the aligned slots and having a width that is less than that of the aligned slots. The deflector further includes a pair of corner slots, positioned between the aligned slots and the perpendicular slots. Angled slots are positioned between the aligned slots and the corner slots and between the perpendicular slots and the corner slots.
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