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SEQUENTIALLY ACTIVATED MULTI-DIAPHRAGM FOAM PUMPS, REFILL UNITS AND DISPENSER SYSTEMS

  • US 20170290470A1
  • Filed: 04/06/2017
  • Published: 10/12/2017
  • Est. Priority Date: 04/06/2016
  • Status: Active Grant
First Claim
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1. A foam dispenser comprising:

  • a housing;

    a drive motor;

    a foam pump operatively coupled to the drive motor;

    the foam pump is secured to the housing and the foam pump includes;

    a housing;

    a molded multi-chamber diaphragm;

    the molded multi-chamber diaphragm comprising;

    a liquid pump chamber;

    two or more air pump chambers; and

    one or more outlet valves;

    a mixing chamber downstream of the one or more outlet valves for mixing foamable liquid from the liquid pump chamber with air from each of the two or more air pump chambers;

    a foam cartridge in fluid communication with the mixing chamber; and

    an outlet for dispensing foam wherein the outlet is in fluid communication with the foam cartridge.

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