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:
Dec. 22, 1998
Filed:
Jun. 12, 1997
Yukito Sato, Sendai, JP;
Takayuki Yamaguchi, Sendai, JP;
Hiroyoshi Shoji, Sendai, JP;
Junichi Azumi, Sendai, JP;
Morimasa Kaminishi, Shiroishi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Ricoh Elemex Corporation, Nagoya, JP;
Ricoh Seiki Company, Ltd., Tokyo, JP;
Abstract
A flow sensor includes a first heating portion, provided at a first position in a flow of a fluid, which heats the fluid and outputs a voltage in response to a temperature of the first position. A second heating portion, provided at a second, downstream position in the flow of the fluid, heats the fluid and outputs a voltage in response to a temperature of the second position, the first position and the second position being spaced from each other in a direction parallel to the flow of the fluid. An intermediate heater, provided between the first heating portion and the second heating portion, heats the fluid at an intermediate position between the first position and the second position.