Dispensing – Resilient wall – Supply container delivering to receiving chamber
Patent
1991-04-05
1993-03-30
Huson, Gregory L.
Dispensing
Resilient wall
Supply container delivering to receiving chamber
222260, 222494, B65D 3700
Patent
active
051976374
ABSTRACT:
A pump for a free-flowing, in particular pasty or liquid, substance includes a support part, a pump element which has an elastically deformable membrane and can be pressed against the support part in opposition to a restoring force, and a pump chamber, disposed between the pump element and the support part, fluidly connected to an inlet valve and to an outlet aperture by an outlet valve, the outlet aperture passing through the membrane. On a side of the membrance which faces the pump chamber, a disk is provided, the disk together with the membrane forming the outlet valve, the disk being connected to the membrane so that in a closed position the membrane rests against the disk in an area enclosing the outlet aperture, and so that in an open position the membrane is arched upward partly away from the disk by a pressure exerted on it by the free-flowing substance, thereby forming an open connection between the outlet aperture and the pump chamber. The membrane is firmly connected to the disk in a connecting sector enclosing the outlet aperture of the membrane, at least around the major part of its circumference. The disk has at least one passage which connects the pump chamber to a surface area of the disk, which surface area is at least partially enclosed by the connecting sector and faces the membrane. The aperture of the at least one passage which terminates at the surface area of the disk is located a distance away from the outlet aperture in a plan view of the membrane.
REFERENCES:
patent: 4519530 (1985-05-01), Schmidt
patent: 4913322 (1990-04-01), Stoffler et al.
patent: 4930667 (1990-06-01), Holzner, Sr.
patent: 4946076 (1990-08-01), Hackmann et al.
patent: 4978036 (1990-12-01), Burd
Compagnie Francaise des Matieres Plastiques PLASCO
Huson Gregory L.
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