Pump maintaining container internal pressure

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United States of America Patent

PATENT NO 9731890
SERIAL NO

14684234

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Abstract

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A piston pump for dispensing fluid from a closed container in which during the cycle of operation to dispense fluid, atmospheric air is discharged into the reservoir towards reducing a vacuum that might otherwise be created within the container.

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Patent Owner(s)

Patent OwnerAddress
OP-HYGIENE IP GMBHHERRENMATTWEG 1 NIEDERBIPP 4704

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jones, Andrew Smithville, US 248 6815
Ophardt, Heiner Arisdorf, CH 251 5134

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