Patent ID: 6745957
Filing Date: 2004-06-08
Classification: A62C,Y10T

Abstract:
A fire hose nozzle comprising a safety device (1) for preventing the fire hose nozzle from being displaced due to action of water supplied to the nozzle, characterised in that the safety device includes a tubular body (3) designed to be connected to a water supply hose (2), a butterfly disc (5) including two coaxial trunnions (6) pivotally mounted on the tubular body (3), on a horizontal axis extending perpendicularly to a direction of flow of the water, the butterfly disc being movable inside the tubular body between an open position, in which the butterfly disc allows the water to flow, and a closed position, in which the butterfly disc restricts this flow, an external control lever integral with one of the trunnions (6), and a triggering means (8) borne by the control lever (7) and bearing against a ground surface, holding the butterfly disc (5) in its open position when the control lever exerts thereon, due to the action of the water flowing over the butterfly disc, a downwards directed vertical force.