초록 ▼

A one-piece, resilient nozzle on an outlet pipe of a carton filler includes two relatively rigid flaps at opposite sides of the nozzle and two relatively flexible walls at other opposite sides of the nozzle, to form with the flaps a loop encircling the nozzle interior. The flaps are biassed, by the

A one-piece, resilient nozzle on an outlet pipe of a carton filler includes two relatively rigid flaps at opposite sides of the nozzle and two relatively flexible walls at other opposite sides of the nozzle, to form with the flaps a loop encircling the nozzle interior. The flaps are biassed, by the inherent resilience of the nozzle, about an axis perpendicular to the nozzle and parallel to linear bottom edges of the flaps into a closed position wherein those edges come together along a linear zone at the base of a downwardly converging interior space bounded by the loop.

대표청구항 ▼

A fluid flow nozzle having an inlet end region and outlet end region and comprising: first and second relatively rigid flaps arranged facing each other at respective first and second opposite sides of the nozzle; first and second relatively flexible walls arranged between the flaps and facing each o

A fluid flow nozzle having an inlet end region and outlet end region and comprising: first and second relatively rigid flaps arranged facing each other at respective first and second opposite sides of the nozzle; first and second relatively flexible walls arranged between the flaps and facing each other at respective third and fourth opposite sides of the nozzle and each having opposite edge zones thereof attached to respective edge zones of the respective flaps so as to form with the flaps a loop encircling the nozzle interior; a ring at said inlet end region and peripherally co-extensive with said loop and mounting said loop; said first flap being so mounted upon said ring as to turn relative to said second flap, about an axis of turning transverse to a longitudinal axis of the nozzle and substantially parallel to respective linear outer edges of the flaps, between an open position and a closed position in which closed position said outer edges come together along a linear zone at the base of an interior space bounded by said flaps and converging towards said linear zone and the walls close off said interior space at said third and fourth sides and each wall extends from said respective edge zone of the respective flap toward said longitudinal axis; and said first flap being biassed into the closed position against the action of any fluid supplied under pressure to the nozzle.