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:
Mar. 17, 1998
Filed:
Sep. 08, 1995
Hironobu Yao, Kawasaki, JP;
Hiroyuki Yoshimura, Kawasaki, JP;
Masato Takahashi, Kawasaki, JP;
Michihiko Tsuruoka, Kawasaki, JP;
Iwao Matsumoto, Kawasaki, JP;
Masakazu Kawakami, Kawasaki, JP;
Keita Okawa, Kawasaki, JP;
Fuji Electric Co., Ltd., Kanagawa, JP;
Abstract
The precision of phase difference obtained by a phase difference calculating unit is improved by correction through outputs of a frequency ratio calculating unit and a temperature calculating unit considering that the phase or time difference of each output signal of a vibration sensor indicating the mass flow or density of a fluid is a function of the temperature and axial force on a measurement pipe, or that the axial force is a function of the ratio between two resonant frequencies.