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Precise volume fluid dispenser

  • US 5,568,882 A
  • Filed: 02/03/1995
  • Issued: 10/29/1996
  • Est. Priority Date: 02/03/1995
  • Status: Expired due to Fees
First Claim
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1. A fluid dispenser for measuring precise volumes of a fluid, comprising:

  • a pressure vessel for receiving a fluid supplied from a supply tank;

    a sense pressure supplya bubbler tube received within said pressure vessel and connected to said sense pressure supply, said sense pressure supply continually exerting a pressure through said bubbler tube while said pressure vessel is receiving said fluid from said supply tank;

    a controller in communication with said bubbler tube for controlling the inflow and outflow of said fluid through said pressure vessel; and

    a pressure transducer connected to said controller and in communication with said bubbler tube, said pressure transducer monitoring a pressure within said bubbler tube, said controller correlating said pressure to a volume of said fluid in said pressure vessel and stopping said inflow of said fluid when said pressure reaches a predetermined level.

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