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:
Apr. 20, 2004
Filed:
Nov. 27, 2002
Applicant:
Inventors:
Cheng-Wen Fan, Tainan, TW;
Chin-Chung Nien, Hsinchu, TW;
Tsung-Tu Gwo, Taipei Hsien, TW;
Kao-Hone Chu, Kaohsiung, TW;
Assignee:
Industrial Technology Research Institute, Hsinchu Hsien, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F 1/78 ;
U.S. Cl.
CPC ...
G01F 1/78 ;
Abstract
A Coriolis force type flow meter uses an optical interferometer as the measuring device. When a tube that a fluid flows through experiences a bending vibration caused by an external stimulating source, the tube also has a twist vibration due to the action of the Coriolis force. The optical interferometer is then employed to measure the tiny angular change in the amplitude of the tube vibration. From such a measurement, one can determine the flux of the fluid in the tube.