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Fluid transfer device

  • US 9,376,224 B2
  • Filed: 01/16/2014
  • Issued: 06/28/2016
  • Est. Priority Date: 05/04/2009
  • Status: Active Grant
First Claim
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1. A fluid transfer device for transferring fluid between a supply reservoir and a fill reservoir comprising:

  • a metering reservoir;

    a first flow path having a first one-way channel fluidly connected with the metering reservoir and configured to fluidly couple the supply reservoir and the metering reservoir and a second one-way channel fluidly connected with the metering reservoir and configured to fluidly couple the fill reservoir and the metering reservoir; and

    a second flow path configured to fluidly couple the supply reservoir and the fill reservoir,wherein expanding the metering reservoir draws fluid from the supply reservoir via the first one-way channel into the metering reservoir, compressing the metering reservoir expels the fluid from the metering reservoir into the fill reservoir via the second one-way channel and expelling the fluid into the fill reservoir displaces air in the fill reservoir into the supply reservoir via the second flow path.

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