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Plunger for moisture tight dispenser

  • US 9,248,950 B2
  • Filed: 06/18/2014
  • Issued: 02/02/2016
  • Est. Priority Date: 01/03/2012
  • Status: Expired due to Fees
First Claim
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1. A dispenser for dispensing a plurality of products, the dispenser comprising:

  • a body, the body including a product housing defining an interior for housing the plurality of products, the product housing being tubular and comprising an outer wall and an inner wall located within the outer wall, the outer wall and the inner wall being joined by a connecting wall, the product housing having a dispensing portion defining a dispensing opening configured to permit the removal of at least one of the plurality of products from the interior, wherein the interior is configured for housing a stack of the plurality of products that extend within the interior towards the dispensing portion;

    the body further including a plunger movably engaged with the product housing and including a product support that moves within the interior to move the plurality of products towards the dispensing opening, wherein a portion of the plunger is movably located within a space formed between the inner wall and the outer wall, wherein the plunger comprises a bottom wall located at a lowermost portion of the body and a side wall that extends upwardly from the bottom wall, the sidewall being a portion of the plunger movably located within the space formed between the inner wall and the outer wall;

    the dispenser comprising a seal between the plunger and the product housing, wherein elastomeric sealing elements respectively positioned around the perimeters of an outer surface of the product housing inner wall and an inner surface of the product housing outer wall, compress against the side wall of the plunger to create the seal;

    the dispenser having a moisture ingress rate of less than 1000 micrograms per day at 80% relative humidity and 22.2°

    C.

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