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DISPENSERS, REFILL UNITS AND PUMPS HAVING SUCK-BACK FEATURES

  • US 20150090737A1
  • Filed: 09/30/2014
  • Published: 04/02/2015
  • Est. Priority Date: 09/30/2013
  • Status: Abandoned Application
First Claim
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1. A refill unit comprising:

  • a container;

    a pump connected to the container; and

    an outlet passage;

    the outlet passage includes a first cylindrical portion and a second portion;

    wherein the diameter of the second portion is larger than the diameter of the first cylindrical portion;

    an inline suck-back valve located in the in the outlet passage;

    wherein the inline-suck-back valve moves within the first cylindrical portion and second portion of the outlet passage; and

    wherein movement of the inline suck-back valve in a first direction while the inline suck-back valve is located within the first cylindrical portion causes fluid in the outlet passage to be drawn back into the outlet passage.

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