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:
Feb. 24, 2004
Filed:
Mar. 06, 2003
Yasushi Kohno, Nagoya, JP;
Toshimasa Yamamoto, Bisai, JP;
Hiroyuki Wado, Toyota, JP;
Tetsuo Yoshioka, Okazaki, JP;
Denso Corporation, , JP;
Abstract
A flow meter is formed with a passage for introducing and carrying air to measure and has a sensing part disposed in the passage for measuring a flow rate of the air. A contraction part is formed on an inner surface of the passage so that the contraction part faces the sensing part. The contraction part narrows the flow of the air flowing near the sensing part. A flat surface of the contraction part is formed in parallel with the surface of the sensing part and at least upstream of the sensing part. Thus, collision of particles against the sensing part and adhesion of contaminants to the sensing pert are inhibited. Meanwhile, the flow rate of the air is measured stably and accurately.