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:
Sep. 12, 2000
Filed:
Sep. 05, 1996
Masamichi Ipponmatsu, Hyogo-ken, JP;
Masashi Nishigaki, Osaka-fu, JP;
Akira Hirano, Hyogo-ken, JP;
Tsuyoshi Nakajima, Hyogo-ken, JP;
Yuji Ikeda, Hyogo-ken, JP;
Minoru Suzuki, Osaka-fu, JP;
Tsuyoshi Tsurutani, Hyogo-ken, JP;
Osaka Gas Company Limited, Osaka-fu, JP;
Abstract
The disclosed method of measuring the flow of a fluid with a porous particulate ceramic tracer and an optical instrument is characterized in that spherical particles having diameters in the range of 0.5 to 150 .mu.m are used as the tracer. Inasmuch as the tracer particles for flow measurement are spherical, the sectional area of scattered light to be detected by an optical sensor means is constant regardless of the orientation of particles. Furthermore, spherical particles have no surface irregularities that might cause concatenation so that individual particles are not agglomerated in tracking a fluid flow, thus contributing to improved measurement accuracy.