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:
Jan. 08, 2002
Filed:
Sep. 22, 1999
Shingo Gomi, Tokyo, JP;
Kimihiro Ichinose, Tokyo, JP;
Osamu Futagawa, Tokyo, JP;
Kazuhide Kobayashi, Tokyo, JP;
Oval Corporation, , JP;
Abstract
A double-tube type Coriolis flow meter is provided for measuring mass flow. The flow meter includes a straight flow tube ( ) through which the fluid being measured flows, a hollow outer tube ( ) secured at both ends thereof to act as a counterbalance, a drive unit ( ), and a pair of sensors. The flow tube ( ) is caused to vibrate by the drive unit ( ) so that the mass flow of the fluid is measured by detecting a phase difference proportional to Coriolis force acting on the flow tube ( ) by the sensors. Sheet members (coupling plates ) secure the flow tube ( ) to both ends of the outer tube ( ) and integrally form the coupling plate ( ) with tube-assembly supporting leaf springs ( ) in the double-tube type Coriolis flow meter. By connecting the flow tube to the outer tube via the sheet members in this manner, stresses produced between the tubes are absorbed and a uniform temperature distribution is maintained in the outer tube and manufacturing costs are reduced.