Valve device for silencer

Acoustics – Sound-modifying means – Muffler – fluid conducting type

Reexamination Certificate

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Details

C181S237000, C137S855000, C137S856000, C137S857000

Reexamination Certificate

active

07066296

ABSTRACT:
A valve device for a silence opens a bypass passage provided in the silencer to flow exhaust gas through the bypass passage when exhaust gas pressure rises to a certain pressure. The valve device includes a base having a valve opening through which exhaust gas flows, and a plate-like valve for opening and closing the valve opening. The plate-like valve is fixed to the base at its proximal portion, and is bent at both edges thereof in a certain range extending from its distal end toward the proximal portion.

REFERENCES:
patent: 1599414 (1926-09-01), Huff
patent: 1614124 (1927-01-01), Hansen
patent: 4079808 (1978-03-01), Mizuno et al.
patent: 4179883 (1979-12-01), Nishiyama et al.
patent: 4484659 (1984-11-01), Buchwalder
patent: 5614699 (1997-03-01), Yashiro et al.
patent: 6065564 (2000-05-01), Uegane
patent: 6079516 (2000-06-01), Pearson
patent: 6173808 (2001-01-01), Maeda et al.
patent: 6899199 (2005-05-01), Sageman
patent: 19957711 (2001-04-01), None
patent: 10-141041 (1998-05-01), None
patent: 2001-020718 (2001-01-01), None
patent: 2001-123817 (2001-05-01), None
patent: 2002180815 (2002-06-01), None
patent: 2004124905 (2004-04-01), None

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