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Abstract

A flowmeter comprised of a substantially S-shaped tube extending to a rigidly anchored inlet tube at one extremity and to a rigidly anchored outlet tube at the other extremity and at least one electromagnetic vibrator disposed at the midsection of the S-shaped tube that imposes low amplitude high frequency oscillatory flexural movements on the inlet tube-S-tube-exit tube combination having two fixed ends in the direction substantially perpendicular to the plane including the S-tube, which oscillatory flexural movements interacting with the fluid moving through the S-tube produces fluid dynamic Coriolis forces that twists the S-tube about an axis substantially tangential to the central axis of the S-tube at the midsection of the S-tube. The amount of twist of the S-tube is directly related to the time rate of mass flow through the S-tube and, consequently, the time rate of mass flow can be measured by measuring the amount of twist of the S-tube.

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First Claim