F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
F04B 53/04 (2006.01) B67D 7/02 (2010.01) A47K 5/12 (2006.01) B05B 11/00 (2006.01) B67D 1/10 (2006.01) B67D 3/02 (2006.01) F04B 9/14 (2006.01) F04B 53/12 (2006.01) G01F 11/02 (2006.01)
Patent
CA 2149313
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 discs 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.
Hygiene-Technik Inc.
Riches Mckenzie & Herbert Llp
LandOfFree
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