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Bifurcated foam pump, dispensers and refill units

  • US 8,763,863 B2
  • Filed: 07/03/2013
  • Issued: 07/01/2014
  • Est. Priority Date: 02/08/2008
  • Status: Expired due to Fees
First Claim
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1. A disposable refill unit for a dispenser having a permanent air compressor residing therein, the disposable refill unit comprising:

  • a container containing a foamable liquid;

    a liquid pump secured to the container;

    a chamber in the liquid pump for receiving liquid and compressed air;

    a liquid passage from the container to the chamber;

    an air passage located upstream of the one-way air inlet member;

    the air passage configured to be in fluid communication with an air compressor and configured to pass compressed air from the air compressor to the chamber when the refill unit is installed in a dispenser and the air passage is configured to not be in fluid communication with the air compressor when the refill unit is not installed in the dispenser; and

    one or more sealing members forming a seal between an air compressor and the air passage when the refill unit is installed in a dispenser.

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