Disposable plastic liquid pump

Details Disposable plastic liquid pump Disposable plastic liquid pump

A - Human Necessities

47

K

A47K 5/12 (2006.01) B67D 7/06 (2010.01) B05B 11/00 (2006.01) F04B 53/12 (2006.01) G01F 11/02 (2006.01)

Patent

CA 2045313

A disposable plastic pump for dispensing liquids is disclosed which comprises three basic unitary all plastic elements: a chamber forming body having an open outer end and an inner end in fluid communication with a liquid reservoir, a one-way valve located at the inner end of the chamber between the reservoir and the chamber permitting fluid flow only from the reservoir into the chamber, and a piston formed to slidably fit into the chamber. The piston comprises a stem on which is located an inwardly located flexing element serving as a one-way valve to permit fluid flow outwardly past the flexing element and a sealing element located outwardly of the flexing element. A channel is provided from an inlet on the piston between the flexing element and the sealing element through which the dispensed liquid flows.

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