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:
Nov. 16, 1999
Filed:
Apr. 24, 1998
Applicant:
Inventors:
Takayuki Yamaguchi, Miyagi, JP;
Yukito Sato, Miyagi, JP;
Hiroyoshi Shoji, Miyagi, JP;
Junichi Azumi, Miyagi, JP;
Morimasa Kaminishi, Miyagi, JP;
Assignees:
Ricoh Company Ltd., Tokyo, JP;
Ricoh Elemex Corporation, Nagoya, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F / ;
U.S. Cl.
CPC ...
73-134 ; 73 2321 ; 73 2324 ;
Abstract
A method of calibrating a zero point of a flow sensor includes the steps of detecting a transition of output of the flow sensor caused in response to a shut down of a fluid, and adjusting the zero point of a characteristic curve representing the output of the flow sensor and a flow rate, such that the indicated flow rate is zero immediately after the transition of the flow sensor output.