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:
Feb. 24, 1987
Filed:
Aug. 29, 1985
Toyofumi Tomita, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A square wave excitation current is supplied to an excitation coil. A magnetic field generated in this coil is impressed on an electrically conductive fluid. The voltage induced in the electrically conductive fluid is drawn out as a flow rate signal by means of a pair of electrodes. The issue of the flow rate signal is delayed by the sample hold circuit to an extent corresponding to half the period of the flow rate signal. A differential amplifier determines a difference between the level of the flow rate signal and that of the delayed signal. The noise component of the delayed signal is offset against the noise component of the flow rate signal, thus issuing a signal having a level corresponding the level difference. The flow rate of the electrically conductive fluid is determined from the level of an output signal from the differential amplifier.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile