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Flowmeter

  • US 3,955,415 A
  • Filed: 03/03/1975
  • Issued: 05/11/1976
  • Est. Priority Date: 03/08/1974
  • Status: Expired due to Term
First Claim
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1. A flowmeter for the quantitative measurement of small rates of flow of fluids flowing through the flowmeter, comprising:

  • a hermetically sealed housing having two parallel walls facing each other, at least one of these being transparent;

    a scale being provided on a transparent wall;

    a thin vane made of flexible, resilient material positioned so as to divide the said housing into two parts, one end of said vane being non-rotatably attached to the housing;

    inlet means being provided in a sidewall of one of these parts; and

    outlet means being provided in a sidewall of the other part of the housing;

    said vane being of an area substantially equal to the cross-section of the housing where said vane is located in its rest position,whereby the rate of flow is indicated by the deflection of the edge of the flexible vane due to the bending thereof in the fluid flow.

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