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Fluid delivery device with conformable ullage and fill assembly

  • US 6,007,518 A
  • Filed: 09/08/1998
  • Issued: 12/28/1999
  • Est. Priority Date: 12/22/1995
  • Status: Expired due to Fees
First Claim
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1. A fluid delivery apparatus comprising:

  • (a) a fluid delivery assembly having an outlet for delivering fluid from the apparatus, said fluid delivery assembly including;

    (i) a base;

    (ii) means defining a conformable ullage overlaying said base for forming in conjunction therewith a reservoir having an outlet in communication with said outlet of said fluid delivery assembly;

    (iii) a cover assembly connected to said base, one of said cover assembly and said base having a receiving chamber interconnected with said reservoir; and

    (iv) a stored energy means for exerting forces on said means defining a conformable ullage, said stored energy means comprising at least one distendable membrane superimposed over said means defining a conformable ullage, said membrane being distendable by forces imparted thereon by said means defining a conformable ullage in response to fluids introduced into said reservoir, said forces establishing internal stresses within said distendable membrane, said stresses tending to return said distendable membrane toward a less distended configuration, said distendable membrane being generally conformable to the shape of said means defining a conformable ullage as said membrane is being distended thereby and also being generally conformable to the shape of said means defining a conformable ullage as said distendable membrane tends to return to said less distended configuration; and

    (b) a fill assembly interconnected with said fluid delivery assembly for filling said reservoir.

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