Air flow measuring device

Details Air flow measuring device Air flow measuring device

2008-05-15

2010-02-23

Caputo, Lisa M (Department: 2855)

Measuring and testing

Internal combustion engine or related engine system or...

Monitoring intake air system

Reexamination Certificate

active

07665351

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.

REFERENCES:
patent: 5099686 (1992-03-01), Kohler
patent: 5804718 (1998-09-01), Nagasaka et al.
patent: 5847275 (1998-12-01), Kondo et al.
patent: 6079264 (2000-06-01), Yamakawa et al.
patent: 6474154 (2002-11-01), Kohmura et al.
patent: 6474177 (2002-11-01), Maeda et al.
patent: 6526822 (2003-03-01), Maeda et al.
patent: 6578414 (2003-06-01), Kohmura et al.
patent: 6619140 (2003-09-01), Kitahara et al.
patent: 6647776 (2003-11-01), Kohmura et al.
patent: 6786089 (2004-09-01), Goto et al.
patent: 7043978 (2006-05-01), Goka et al.
patent: 7089788 (2006-08-01), Yonezawa
patent: 7194920 (2007-03-01), Welker
patent: 7389686 (2008-06-01), Thomas et al.
patent: 2002/0023485 (2002-02-01), Kohmura et al.
patent: 2002/0129648 (2002-09-01), Kohmura et al.
patent: 2003/0182998 (2003-10-01), Goto et al.
patent: 2008/0307867 (2008-12-01), Enomoto et al.
patent: 2008/0307868 (2008-12-01), Kitahara
patent: 2008/0307869 (2008-12-01), Kamiya
patent: 60-185118 (1985-09-01), None
patent: 06-307906 (1994-11-01), None
patent: 8-297039 (1996-11-01), None
patent: 9-287991 (1997-11-01), None
patent: 2005-128038 (2005-05-01), None
patent: 2006-047272 (2006-02-01), None
U.S. Appl. No. 12/120,882, Takashi Enomoto et al., filed May 15, 2008, (JP 2007-157314).
U.S. Appl. No. 12/120,981, Noboru Kitahara, filed May 15, 2008, (JP 2007-157362).
Japanese Office Action dated Mar. 3, 2009, issued in corresponding Japanese Application No. 2007-157392, with English translation.
Japanese Office Action dated Oct. 27, 2009, issued in corresponding Japanese Application No. 2007-157392, with English translation.

Affiliated with

Also associated with

Rating

Air flow measuring device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Air flow measuring device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Air flow measuring device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4179910