Membrane pump with air release valve

Details Membrane pump with air release valve Membrane pump with air release valve

A - Human Necessities

61

M

A61M 1/06 (2006.01) F04B 45/04 (2006.01) F04B 49/03 (2006.01)

Patent

CA 2579162

A suction pump, in particular a breast pump, comprises a bleed valve with a bleed opening (44, 54, 67), a bleed body (32) which seals the bleed opening and an operating means (8) for operating the bleed body. The bleed body may be operated such that upon opening the valve initially only a partial region of the bleed opening is released and subsequently a greater part thereof or the whole bleed opening is released. Said suction pump provides a large functionality with the smallest size and, furthermore, is cheap to produce and easily assembled.

L'invention concerne une pompe aspirante, notamment une pompe tire-lait, présentant une soupape de ventilation comportant une ouverture de ventilation (44, 54, 67), un corps de ventilation (32) fermant l'ouverture de ventilation et un élément d'actionnement (8) destiné à actionner le corps de ventilation. Le corps de ventilation peut être actionné de telle manière qu'il ne libère qu'une partie de l'ouverture de ventilation lors de l'ouverture de la soupape, puis une partie plus grande ou la totalité de l'ouverture de ventilation. Ladite pompe aspirante offre une grande fonctionnalité, une grande compacité et peut être fabriquée de façon économique et montée simplement.

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