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1. (WO2014193885) VACUUM PRIME FOAM PUMPS, REFILL UNITS AND DISPENSERS

Pub. No.:    WO/2014/193885    International Application No.:    PCT/US2014/039662
Publication Date: Fri Dec 05 00:59:59 CET 2014 International Filing Date: Thu May 29 01:59:59 CEST 2014
IPC: B05B 7/00
B05B 12/00
B05B 7/26
A47K 5/14
Applicants: GOJO INDUSTRIES, INC.
Inventors: CIAVARELLA, Nick, E.
GALLO, Michael, J.
Title: VACUUM PRIME FOAM PUMPS, REFILL UNITS AND DISPENSERS
Abstract:
Exemplary embodiments of foam pumps, refill units and dispenser systems are disclosed herein. Some embodiments have a foam pump that includes a chamber having a liquid inlet, a vacuum outlet, a pressurized air inlet and a liquid air mixture outlet. The exemplary foam pump includes a liquid inlet valve located in fluid communication with the liquid inlet to allow liquid to enter the chamber and to prevent liquid from exiting the chamber through the liquid inlet. Vacuum pressure applied to the vacuum outlet causes fluid to flow through the liquid inlet, past the liquid inlet valve and into the chamber. Pressurized air flows through the pressurized air inlet and mixes with the liquid and the liquid air mixture is forced out of the liquid air mixture outlet. The foam pump includes a mix media in fluid communication with the liquid air mixture outlet. The liquid air mixture flows through the mix media and flows through an outlet to be dispensed as a foam.