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.

Date of Patent:
Sep. 30, 2014

Filed:

Sep. 29, 2010
Applicants:

Yoshihiko Eguchi, Saitama, JP;

Masahiko Higuchi, Saitama, JP;

Kouji Harada, Saitama, JP;

Yoshiyuki Gushiken, Saitama, JP;

Jun Fukazawa, Gunma, JP;

Inventors:

Yoshihiko Eguchi, Saitama, JP;

Masahiko Higuchi, Saitama, JP;

Kouji Harada, Saitama, JP;

Yoshiyuki Gushiken, Saitama, JP;

Jun Fukazawa, Gunma, JP;

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L 11/00 (2006.01); F16L 9/14 (2006.01); F16L 21/00 (2006.01); F16L 51/02 (2006.01); F16L 11/12 (2006.01); F16L 59/16 (2006.01); F16L 27/111 (2006.01); F16L 11/16 (2006.01); F01N 13/18 (2010.01);
U.S. Cl.
CPC ...
F01N 13/1816 (2013.01); F16L 27/111 (2013.01); F16L 11/16 (2013.01); F16L 51/025 (2013.01);
Abstract

A flexible tube includes a bellows tube, an interlock tube placed inside the bellows tube, and upstream-side and downstream-side joint pipes coupled to opposite ends of the bellows tube. Diameters of fixing end portions located at opposite ends of the interlock tube are made larger than a diameter at a middle portion of the interlock tube, extension portions of the upstream-side and downstream-side joint pipes are fitted and fixed to inner peripheral surfaces of the fixing end portions of the interlock tube, and a depth of each of valley portions of a bellows portion of the bellows tube located over the fixing end portions is smaller than a depth of other valley portions of the bellows portion. Accordingly, it is possible to achieve the downsizing of the flexible tube that is connected to an exhaust system being continuous with an engine to dampen vibrations in the axial direction of the exhaust system.


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