The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 1997
Filed:
Jun. 05, 1995
Takashi Endo, Tokyo, JP;
Kenichi Matsuoka, Tokyo, JP;
Kimihiro Ichinose, Tokyo, JP;
Hidemi Seki, Tokyo, JP;
Shingo Gomi, Tokyo, JP;
Oval Corporation, Tokyo, JP;
Abstract
Disclosed is a Coriolis flowmeter which is capable of detecting a mass flow and a density of fluid with an increased stability by resonantly oscillating a double tube portion consisting of an inner flow tube allowing fluid to flow therein and a coaxially disposed thereon counterbalance tube provided with a weight for equalizing the lateral natural frequency of the counterbalance tube with that of the flow tube. The Coriolis flowmeter has supporting metal means for supporting the both ends of the flow tube in such a way that the both ends of the flow tube is restricted in radial directions and axially movable in respective connecting flange; the inner flow tube has extending ends enlarged in diameter and supported in the respective connecting flanges of the outer housing. The flow tube is further supported at near-to-end portions on respective rectangle leaf springs having a plane parallel to oscillating direction and extending in radial direction of the double tube portion being perpendicular to the oscillating direction within the outer housing. The flow tube is thus supported at four stable points representing oscillating nodes, axially movable but radially restricted, assuring stable oscillation and accurate measurement of mass flow.