Two-piece foam piston pump

A piston pump for dispensing fluid from a reservoir, an improved vacuum relief arrangement in which a passageway for flow of air from the atmosphere into the reservoir is provided at least in part through a piston-forming element of the piston pump.

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Bibliographische Detailangaben
Hauptverfasser:	Jones, Andrew, Ophardt, Heiner, Shi, Zhenchun
Format:	Patent
Sprache:	eng
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ATOMISING APPARATUS BOTTLES, JARS OR SIMILAR CONTAINERS COFFEE MILLS DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISEPROVIDED FOR DOMESTIC ARTICLES OR APPLIANCES FURNITURE HUMAN NECESSITIES LIQUID HANDLING NOZZLES OPENING, CLOSING PERFORMING OPERATIONS SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR SPICE MILLS SPRAYING APPARATUS SPRAYING OR ATOMISING IN GENERAL SUCTION CLEANERS IN GENERAL TOILET ACCESSORIES TRANSPORTING
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Beschreibung
Zusammenfassung:	A piston pump for dispensing fluid from a reservoir, an improved vacuum relief arrangement in which a passageway for flow of air from the atmosphere into the reservoir is provided at least in part through a piston-forming element of the piston pump.