Disposable dispenser pump for products in liquid or paste form

Details Disposable dispenser pump for products in liquid or paste form Disposable dispenser pump for products in liquid or paste form

1987-04-01

1988-10-11

Rolla, Joseph J.

Dispensing

Resilient wall

Supply container delivering to receiving chamber

222206, 222212, 222213, 222491, 222494, 222215, B65D 3700, B65D 572

Patent

active

047764953

ABSTRACT:
A dispenser pump and cartridge forming a single unit which can be discarded after use includes a hollow pump body with an admission valve having flexible lips which separate at the time of use under the action of a pressure gradient established within the product to be dispensed. The pump body also has a delivery valve with a flexible tubular skirt which is inwardly deformable and capable of moving locally away from an annular sealing lip, thus permitting downward escape of a dose of product. Subsequent re-closing of the skirt prevents any upward admission of external air.

REFERENCES:
patent: 2902049 (1959-09-01), Ilfrey et al.
patent: 3448766 (1969-06-01), Schule

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