Dispensing – With casing or support – Bracket or suspension supported
Patent
1992-11-23
1994-02-01
Kashnikow, Andres
Dispensing
With casing or support
Bracket or suspension supported
222321, 222325, 222340, 417545, 417547, 417550, B67D 506
Patent
active
052825523
ABSTRACT:
A disposable plastic pump for dispensing liquids is disclosed which comprises two basic unitary, preferably all plastic, elements: a chamber forming body having an open outer end and an inner end in fluid communication with a liquid reservoir, and a piston formed to slidably fit into the chamber. The chamber forms two axially adjacent coaxial chambers, an inner chamber of one diameter and an outer chamber of a greater diameter. The piston comprises a stem on which is located two spaced flexing disc each sized to fit in and serving as a one-way valve in the inner chamber and outer chamber, respectively, permitting fluids to flow outwardly past each flexing disc. A sealing disc is located on the stem outwardly of the outermost flexing disc. A passageway is provided from an inlet on the piston between the outermost flexing disc and the sealing disc through which the dispensed liquid flow.
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Hygiene-Technik Inc.
Kashnikow Andres
Kaufman Joseph A.
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