US Patent 7137298 Thermal air flowmeter
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Patent Inventor Names
Izumi Watanabe0
Keiichi Nakada0
Keiji Hanzawa0
Masahiro Matsumoto0
Masamichi Yamada0
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Patent abstract
A thermal air flowmeter which improves air flow rate measurement sensitivity, reduces power consumption of a heating element and broadens the measuring range. A heating resistor is provided on insulating film in a thermal insulating area as a rectangular space on a flat substrate; and two resistance temperature detectors are provided upstream and downstream of the heating resistor. The sides of the rectangular thermal insulating area which are parallel to the axis of air flow are longer than its sides which are perpendicular to the axis of air flow.
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US Patent 07137298 Thermal air flowmeter US Patent 7137298 Thermal air flowmeter
Infobox
Patent Number
071372980
Patent Number
71372980
Edits on 22 Apr, 2023
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Infobox
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Patent Jurisdiction
Patent Number
071372980
Date of Patent
November 21, 2006
0Patent Application Number
108603260
Date Filed
June 4, 2004
0Official Website
Patent Primary Examiner
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US Patent 07137298 Thermal air flowmeter
Infobox
Is a
Patent jurisdiction
Patent number
07137298
Date of patent
November 21, 2006
Patent application number
10860326
Date Filed
June 4, 2004
Patent primary examiner
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