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FLUID FLOW CONTROL SYSTEM

  • US 3,763,877 A
  • Filed: 11/12/1971
  • Issued: 10/09/1973
  • Est. Priority Date: 11/12/1971
  • Status: Expired due to Term
First Claim
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1. A flow control system for maintaining a substantially constant flow of fluid sample into a chamber comprising;

  • a. conduit means, including upstream and downstream flow restriction means in series with each other, for conducting the fluid sample to said chamber;

    b. bypass flow means connected between said flow restriction means, said bypass flow means including suction means for drawing off a portion of the fluid sample that has passed through said upstream flow restriction means;

    c. means establishing communication between the inlet of said suction means and a source of supplementary fluid; and

    d. means located in said communication means for regulating the quantity of supplemental fluid drawn to said suction means, to thereby influence the pressure between said upstream and downstream flow restriction means and the flow of fluid sample to said chamber.

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