×

Apparatus for measuring fluid flow

  • US 4,788,869 A
  • Filed: 06/27/1986
  • Issued: 12/06/1988
  • Est. Priority Date: 06/27/1986
  • Status: Expired due to Fees
First Claim
Patent Images

1. Apparatus for measuring fluid flow, comprising an elongated housing having an opening in one end thereof;

  • an elongated stem having an end projecting longitudinally from said housing through said opening;

    means within the housing at a location remote from said opening for supporting the stem;

    a probe attached to the projecting end of the stem near said opening for interaction with a flowing fluid and for transmitting to the stem forces exerted on the probe by the flowing fluid; and

    sensor means within the housing for sensing the forces transmitted to the stem and for producing corresponding electrical signals representative of a measurement of said flowing fluid, and wherein said sensor means comprises a variable capacitor, the capacitance of which varies in response to the forces transmitted to the stem by said probe, and wherein the supporting means supports the stem such that the stem is coaxial with the longitudinal axis of the housing, and the sensor means detects deviation of the stem from said axis, and wherein said stem has a portion which is movable in a direction substantially normal to the longitudinal axis of the housing in response to forces exerted on the probe substantially normal to said longitudinal axis, and the sensor means detects movement of said portion in said direction and, wherein the supporting means supports the stem at an opposite end of the stem from the projecting end and said portion of the stem at which movement is detected by the sensor means comprises an intermediate location of the stem.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×