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. 23, 2010
Filed:
May. 15, 2008
Shinichi Kamiya, Kariya, JP;
Shinichi Kamiya, Kariya, JP;
Denso Corporation, Kariya, JP;
Abstract
An air flow measuring device includes a flow amount sensor for measuring a flow amount of air in a duct, and a tube body for defining a bypass passage in the duct. An upstream end surface of the tube body has an inlet of the bypass passage, and a downstream end surface thereof has an outlet of the bypass passage. An outer diameter of an outer peripheral surface of the tube body has a smallest dimension at the upstream end surface, and a largest dimension at the downstream end surface. Furthermore, the outer peripheral surface of the tube body has an upstream portion extending downstream from the upstream end surface in a predetermined range, and the upstream portion of the outer peripheral surface is a convex curve surface in which the outer diameter is increased by a ratio from the upstream end surface toward downstream.