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Method of metering a fluid using a multi-mode differential fluid displacement pump

  • US 5,366,904 A
  • Filed: 04/21/1992
  • Issued: 11/22/1994
  • Est. Priority Date: 06/29/1988
  • Status: Expired due to Term
First Claim
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1. A method of metering a measured amount of a first fluid into a measured amount of a second fluid comprising,confining a fluid within a first chamber of defined volume,mechanically moving a first displacement solid into said defined chamber volume to displace a first measured amount of said confined fluid therefrom,mechanically moving a second displacement solid into said defined chamber volume to displace a second volume of said confined fluid therefrom different from said first volume whereupon said first and second volumes can be mixed in predetermined proportion.

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