Inflatable personal flotation device with gas inlet nozzle

Details Inflatable personal flotation device with gas inlet nozzle Inflatable personal flotation device with gas inlet nozzle

B - Operations, Transporting

63

C

B63C 9/15 (2006.01) B60C 29/00 (2006.01) B63C 9/19 (2006.01) F16K 15/20 (2006.01)

Patent

CA 2343303

A personal flotation device (PFD) (10) comprising an inflatable bladder (16) which is attached to the wearer by means of a waist belt (12) and anchor straps (13) joined to a second belt (15) attached directly to the bladder (16). Both a gas cartridge device (28) and an oral device (18) are provided for inflating the bladder (16). The gas nozzle (34) through which the gas enters the bladder (16) from the gas cartridge (28) includes a plurality of gas paths (43, 49) which permit gas flow substantially perpendicular to the gas inlet nozzle axis (45) thus overcoming difficulties in inflating the PFD caused by the extremely cold gas vented from the cartridge (28) freezing the bladder material of the PFD in the vicinity of the gas inlet nozzle (34). A similar gas inlet nozzle (34) can also be used for the oral inflation device (18).

L'invention concerne un dispositif de flottaison individuel gonflable (10) comprenant une vessie gonflable (16) fixée à l'utilisateur au moyen d'une ceinture (12) et de sangles d'immobilisation (13) reliées à une deuxième ceinture (15) fixée directement à la vessie (16). Un dispositif de cartouche de gaz (28) et un dispositif de gonflage à bouche (18) sont prévus pour le gonflage de la vessie (16). L'embout à gaz (34) par lequel le gaz provenant de la cartouche de gaz passe pour entrer dans la vessie (16), présente plusieurs passages de gaz (43, 49) qui permettent l'écoulement du gaz dans un sens sensiblement perpendiculaire à l'axe (45) dudit embout, ce qui supprime les problèmes de gonflage du dispositif de flottaison, dus au gaz extrêmement froid déchargé de la cartouche (28) et induisant le gel du matériau formant la vessie dudit dispositif, à proximité de l'embout d'entrée de gaz (34). Un embout d'entrée de gaz (34) similaire peut également être utilisé pour le dispositif de gonflage à bouche (18).

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