Exhaust passage control valve

Details Exhaust passage control valve Exhaust passage control valve

2007-12-25

2007-12-25

Tran, Binh Q. (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

Divider, collector, valve means, or boundary layer device...

C060S292000, C060S293000, C060S312000, C060S322000, C181S237000, C181S254000, C181S278000, C181S279000, C137S529000, C137S535000, C123S0650VD, C029SDIG085

Reexamination Certificate

active

11320570

ABSTRACT:
Exhaust passage control valve10may comprise housing30, valve member20, and helical torsion spring40. Housing30has an exhaust passage. Exhaust gas from an internal combustion engine flows through the exhaust passage of the housing30. Valve member20opens and closes the exhaust passage of the housing. Helical torsion spring40may be disposed at the opposite side of the valve member from the housing side thereof. Helical torsion spring40comprises a coil part wherein spring wires have been wound in a coil shape, and arms formed at both ends of the coil part. The coil part may be disposed at approximately the center of the valve member. When the arms bend with respect to the coil part, the counter-force of this bending energizes the valve member towards a closing side. The spring mounting member may be arranged and constructed to adjust a position in which the spring mounting member is mounted on the housing such that a rotation angle of the arms can be changed.

REFERENCES:
patent: 4205706 (1980-06-01), Jasensky
patent: 6176347 (2001-01-01), Chae et al.
patent: 6338246 (2002-01-01), Eguchi et al.
patent: 6527006 (2003-03-01), Jackson
patent: 6637449 (2003-10-01), Nagai et al.
patent: 6769247 (2004-08-01), Watanabe et al.
patent: 2001-207827 (2001-08-01), None

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