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:
Sep. 06, 2005
Filed:
Nov. 18, 2002
Takao Iwaki, Chiryu, JP;
Toshiyuki Morishita, Iwakukra, JP;
Yasushi Kohno, Nagoya, JP;
Hiroyuki Wado, Toyota, JP;
Yasushi Goka, Kariya, JP;
Makoto Tsunekawa, Okazaki, JP;
Toshirou Gotou, Kariya, JP;
Kiyoyuki Sugiura, Okazaki, JP;
Takao Iwaki, Chiryu, JP;
Toshiyuki Morishita, Iwakukra, JP;
Yasushi Kohno, Nagoya, JP;
Hiroyuki Wado, Toyota, JP;
Yasushi Goka, Kariya, JP;
Makoto Tsunekawa, Okazaki, JP;
Toshirou Gotou, Kariya, JP;
Kiyoyuki Sugiura, Okazaki, JP;
Denso Corporation, , JP;
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.