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Title: Sprinkler head with wall penetrating means
Claims: What is claimed is: 1. A sprinkler head for positioning on the opposite side of a penetrable screen from the area to be fire-protected comprising: a supply tube for conveying a fire-extinguishing fluid; means for penetrating and rupturing the screen for dispersion of the fluid from the tube into the area to be protected; means for impacting against said penetrating means; and means for restraining said impacting means in ready position of the sprinkler head, said restraining means including a portion rupturable on command. 2. The sprinkler head of claim 1 wherein said screen is an interior wall or ceiling structure and said penetrating means includes bayonet means. 3. The sprinkler head of claim 2 wherein said supply tube includes a supply end and a discharge end and wherein said bayonet means includes a base portion for blocking the discharge end of the tube in the ready position of the head. 4. The sprinkler head of claim 3 wherein said impacting means includes a sleeve coaxial with said tube and force means for driving said sleeve against said penetrating means. 5. The sprinkler head of claim 4 wherein said force means is a coil spring coaxial with said tube. 6. The sprinkler head of claim 5 also including a fixed base plate adjacent said supply end of said tube and wherein said sleeve includes a flange remote from said bayonet, said sleeve being slidably mounted on said tube and said restraining means includes cable means for tensioning said coil spring between said base plate and said flange. 7. The sprinkler head of claim 6 also including a plurality of elongated guide rods spaced about and affixed at one end to the base plate, the other ends being unattached, and wherein said flange includes a like plurality of apertures for slidably mounting said sleeve on said elongated rods, said elongated guide rods including abutment means at their unattached ends for limiting the excursion of said sleeve under the force of said coil spring. 8. The sprinkler head of claim 3 wherein said base portion of said bayonet includes an insert, said discharge end of said tube being force-fitted into said insert in the ready position of the sprinkler head. 9. The sprinkler head of claim 8 wherein said bayonet is conical and said base portion is circular, the periphery of said base portion surrounding said insert being formed in a plurality of spaced radial lugs for deflecting the fire-extinguishing fluid. 10. The sprinkler head of claim 9 wherein said penetrating means also includes a plurality of guide rods fixed to and spaced about the periphery of said base portion of said bayonet, said guide rods being slidably mounted in the body of said sleeve for limited movement therein to permit release of said discharge end of said tube from the force-fit with said insert. 11. The sprinkler head of claim 10 wherein said insert is composed of neoprene. 12. A sprinkler head system for positioning a sprinkler head on the opposite side of a penetrable screen from the area to be fire-protected, comprising: a supply tube for conveying a fire-extinguishing fluid; means for penetrating and rupturing the screen for dispersion of the fluid from the tube into the area to be protected; means for impacting against said penetrating means; means for restraining said impacting means in the ready position of the sprinkler head, said restraining means including a portion rupturable on command; means for sensing an incendiary condition in the area to be fire-protected; and means responsive to said sensing means for rupturing said rupturable portion of said restraining means. Other info: Inventors: Barge, Timothy T. (Suitland, MD, US) Application Number: 797342 Filing Date: 1977-05-16 Publication_date: 1978-11-07 Assignee: Masano; Thomas J. (Suitland, MD); Masano; John T. (Brandywine, MD) Primary Class(es): 169/70 169/37, 239/271 Other Classes: US Patent Ref:
Other Refs:
Primary Examiner: Saifer, Robert W. Assistant Examiner: Attorney: Finnegan, Henderson, Farabow and Garrett |
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