Measuring and testing – Volume or rate of flow – Thermal type
Reexamination Certificate
2005-09-06
2005-09-06
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Volume or rate of flow
Thermal type
Reexamination Certificate
active
06938473
ABSTRACT:
An airflow meter has a membrane type sensor element. The sensor element is supported on a support member so that a sensing surface of the sensor element is in parallel to the airflow direction. The airflow meter has at least one means for protecting the sensor element from dust such as foreign particles. The protecting means is provided with an obstruction member that is disposed upstream or downstream of the sensor element with respect to the airflow direction. The sensor element is hidden behind the obstruction member. The obstruction member has gradually spreading surfaces and gradually converging surfaces along the airflow direction. Alternatively, the protecting means can be provided with a deflector, a cover member, a flow guide member, an inlet or a dust collector.
REFERENCES:
patent: 4457169 (1984-07-01), Lauterbach et al.
patent: 4981035 (1991-01-01), Hall
patent: 5220830 (1993-06-01), Bonne
patent: 5454859 (1995-10-01), Chiba et al.
patent: 5942683 (1999-08-01), Aoi et al.
patent: 6079264 (2000-06-01), Yamakawa et al.
patent: 6085587 (2000-07-01), Konzelmann
patent: 6112590 (2000-09-01), Rilling
patent: 6332356 (2001-12-01), Hecht et al.
patent: 6336360 (2002-01-01), Weber
patent: 6595049 (2003-07-01), Maginnis et al.
patent: 05-312064 (1993-11-01), None
patent: 06-026903 (1994-02-01), None
patent: 2000-304585 (2000-11-01), None
patent: 2001-33288 (2001-02-01), None
patent: 2001-174305 (2001-06-01), None
Goka Yasushi
Gotou Toshirou
Iwaki Takao
Kohno Yasushi
Morishita Toshiyuki
Denso Corporation
Lefkowitz Edward
Nixon & Vanderhye PC
Thompson Jewel V.
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