Measuring and testing – Volume or rate of flow – Thermal type
Reexamination Certificate
2008-05-20
2008-05-20
Thompson, Jewel (Department: 2855)
Measuring and testing
Volume or rate of flow
Thermal type
Reexamination Certificate
active
10574059
ABSTRACT:
The arrangement relates to a hot-film mass flow meter for recording the flow rate of a flowing medium in the intake tract or the charge air tract of an internal combustion engine. A substrate part is provided, that accommodates a sensor chip, which is allocated to a channel that has flowing through it at least one partial mass flow of the flowing medium. The sensor chip extends into channel that has flowing through it the partial mass flow of the flowing medium. The substrate part is formed either as a separately extruded plastic tongue or as a cavity extruded of plastic material. The sensor chip is integrated downstream with respect to a flow direction of the flowing medium, so as to lie behind a leading edge.
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patent: 5744713 (1998-04-01), Wienand et al.
patent: 6516785 (2003-02-01), Nakada et al.
patent: 2002/0050165 (2002-05-01), Yonezawa et al.
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patent: 2002/0069699 (2002-06-01), Sato et al.
patent: WO 02/08701 (2002-01-01), None
Automotive Handbook 23rd [English version 5th], updated and expanded edition, Braunschweig, Wiesbaden, Viehweg, 1999, pp. 116-117.
Schard Rainer
Strohrmann Manfred
Kenyon & Kenyon LLP
Robert & Bosch GmbH
Thompson Jewel
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