Measuring and testing – Volume or rate of flow – Thermal type
Patent
1987-03-03
1989-06-27
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
Thermal type
731182, B01F 168
Patent
active
048417696
ABSTRACT:
In an apparatus for measuring the velocity of flow of fluids, and particularly of the intake air of internal combustion engines, having an electrically heatable resistance layer which is applied in insulated manner on a support and is in thermal contact with the flowing fluid, the support is developed in rectangular shape with a flat central part bearing the resistance layer and is provided with reinforcement strips integral with it on at least three sides. Futhermore, the central part is provided at its edges with slits which adjoin the reinforcement strips. The apparatus of the invention can be produced preferably from silicon by etching and can be developed to receive futher resistors and other electronic elements.
REFERENCES:
patent: 4320655 (1982-03-01), Kammermaier et al.
patent: 4478076 (1984-10-01), Bohrer
patent: 4581928 (1986-04-01), Johnson
patent: 4633578 (1987-01-01), Aine et al.
patent: 4680963 (1987-07-01), Tabata et al.
patent: 4696188 (1987-09-01), Higashi
patent: 4735099 (1988-04-01), Ohta et al.
Porth Wolfgang
Weibler Wolfgang
Farber Martin A.
Goldstein Herbert
VDO Adolf Schindling AG
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