Reversible inflation system

A - Human Necessities – 47 – C

Patent

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A47C 27/08 (2006.01)

Patent

CA 2528332

A reversible inflation system allowing a single pump to be used both for inflation and deflation of the air bladder. This embodiment of the inflation system includes a pump with an inlet and an outlet ports and a pump housing having two filling and venting valves. The pump is movably mounted in the pump housing so that the pump can move axially between two locations in the pump housing. In one of the locations, the pump ports align with the housing valves to create an air path that inflates the bladder. In the other location, the pump ports align with the housing valves to create an air path that deflates the bladder.

L'invention concerne un système de gonflage réversible permettant d'utiliser une seule pompe pour le gonflage et le dégonflage d'une vessie à air. Dans ce mode de réalisation, ledit système de gonflage comprend une pompe dotée d'orifices d'entrée et de sortie, et un carter doté de deux soupape de remplissage et d'évacuation. La pompe est montée de manière amovible dans le carter de sorte qu'elle se déplace axialement entre deux emplacements. Au niveau de l'un des emplacements, les orifices de la pompe s'alignent avec les soupapes du carter afin de créer une voie d'air qui gonfle la vessie. Au niveau de l'autre emplacement, les orifices de la pompe s'alignent avec les soupapes du carter afin de créer une voie d'air qui dégonfle la vessie.

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