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US 5,392,993 AGranted
Fire protection nozzle
AssigneeGrinnell Corporation
InventorMichael Fischer
Life of this patent
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AssigneeGrinnell Corporation
InventorMichael Fischer
Estimating the term…
A fire protection nozzle of this invention has a base defining an orifice and an inlet section defining a conduit for flow of fire-retardant fluid, leading to an upstream end of the orifice. A diffuser is supported by arms extending from the base in a position downstream of the orifice where fire-retardant fluid flowing from the inlet section emerges from the orifice in a coherent stream which impinges on the diffuser to be deflected in a spray pattern. The inlet section, in the direction of the fire-retardant fluid flow, has a cross-sectional shape of an inwardly convex curvilinear arc with a length equal to or greater than the diameter of the orifice. In a preferred embodiment, the diffuser defines two or more slots, each having a cross-sectional open area equal to at least eight percent of the total cross-sectional area of the diffuser measured in a plane transverse to the direction of fire-retardant fluid flow from the orifice.
In a fire protection nozzle of the type comprising a base, an orifice, defined by said base and having a predetermined diameter, through which fire-retardant fluid can flow, an inlet section having an upstream end and defining a conduit for flow of the fire-retardant fluid along a conduit axis and leading to an upstream end of said orifice, a diffuser element positioned downstream of said orifice, and one or more arms extending from said base and supporting said diffuser element in a position, where, when flow of the fire-retardant fluid from said inlet section through said orifice is established, the fire-retardant fluid emerges from said orifice in a stream which impinges on said diffuser element to be deflected in a spray pattern,
In a fire protection nozzle of the type comprising a base, an orifice defined by said base through which fire-retardant fluid can flow, an inlet section defining a conduit for flow of the fire-retardant fluid leading to said orifice, a diffuser element positioned downstream from said orifice, and one or more arms extending from said base for supporting said diffuser element, in a position where, when flow of the fire-retardant fluid through said orifice is established, the fire-retardant fluid emerges from said orifice and impinges on said diffuser element to be deflected in a spray pattern,
Dependencies are inferred from the claim text.