B - Operations – Transporting – 05 – B
Patent
B - Operations, Transporting
05
B
299/31
B05B 1/00 (2006.01) A62C 31/22 (2006.01)
Patent
CA 2030025
A penetrator for a fire extinguishing tool has an impact end and a striker end. The penetrator has an impact barrel having a central axis, an axially-extending internal wall, a striker end and an impact end. An axially-extending nozzle having an axially-extending passage barrel is slidably placed in the impact barrel, the nozzle barrel having a peripheral wall with nozzle ports therethrough. A point attached to the nozzle barrel, projects beyond the impact barrel, and a shoulder on the point is laterally aligned with the impact end of the impact barrel for transmission of impact forces from the impact barrel to the point. A first socket is formed in the point facing into the passage in the nozzle barrel, and a taper in the socket narrows toward the impact end. An end cap on the impact barrel at its striker end closes the impact barrel, and has an axially extending rod passage therethrough. A second socket formed on the end cap faces into the impact barrel, and a taper in the end cap enlarges as it extends into the impact barrel. A slide rod is slidably fitted in the end cap, and a collar on the rod outside of the impact barrel. A retainer is attached to the slide rod inside the impact barrel, a first taper on the retainer facing toward the first socket, and a second taper on the retainer facing toward the second socket. A slide hammer is reciprocably slidably fitted on said slide rod and has a striker face disposed and arranged so as to be impacted on the striker surface of the impact barrel. Retention means on the barrels prevent the nozzle barrel from being expelled from the impact barrel. Inlet port means through the impact barrel admits fluid under pressure into the barrels. With the first taper in the first socket, much of the slide rod is held inside the impact barrel, and with the second taper in the second socket much of the slide rod is held outside of the impact barrel. Impact of the slide hammer on the impact barrel exerts forces on the structure through the point. After penetration, fluid under pressure will be admitted to the barrels, thereby extending the nozzle barrel, and exposing the nozzle ports in order to inject fluid agent into the structure.
Mcclenahan Charles H.
Smart & Biggar
LandOfFree
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