Patent ID: 8028757
Filing Date: 2011-10-04
Classification: A62C

Abstract:
1. A nozzle in association with an extinguishing device containing a gas extinguishing agent under pressure, said nozzle comprising: a body portion of a material with a high heat conductivity coefficient and comprising at least one through opening, wherein said opening comprises at least one straight part of larger diameter that leads to a straight part of a smaller diameter, which in turn leads to at least one diverging part, which parts are arranged in that order respectively along the direction of expulsion of the extinguishing agent, said through opening being further adapted to be coupled to a tank of said extinguishing device which tank contains said extinguishing agent; at least one pad made of thermoplastic material, said pad having a substantially circular transverse cross section that is equal to the inside diameter of the straight part of larger diameter, and being held in place by being seated singularly in the straight part of said larger diameter against said straight part of smaller diameter such that the pad hermetically blocks said through opening and is held in place by pressure of said the extinguishing agent retaining the pad against the straight part of smaller diameter; and a heat conduction assembly including a plurality of fins that are distributed peripherally on an exterior of at least one of: said body portion and said straight portion such that during fire fighting conditions, the temperature variation is transmitted rapidly to said body portion by said fins, and in turn to said pad which is adapted to soften at a preset temperature and is automatically expelled out of the through opening due to the pressure of the extinguishing agent, thereby allowing the automatic dispensing of said extinguishing agent via the through opening, after which the pad is adapted to be quickly restored.