Intake air control valves

Details Intake air control valves Intake air control valves

2007-06-26

2008-12-16

Wolfe, Jr., Willis R. (Department: 3747)

Internal-combustion engines

Engine speed regulator

Specific throttle valve structure

C123S336000, C123S361000, C251S305000

Reexamination Certificate

active

07464692

ABSTRACT:
An intake air control valve has a bore defining member and a butterfly-type valve member that includes a shaft and a valve body. The valve body has a pair of valve portions joined to the shaft and rotatable between a fully closed position and a fully opened position; Each of the valve portions has a central portion and opposite end portions along a direction of the rotational axis of the valve member. The thickness of each of the valve portions gradually increases from the central portion toward the end portions.

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patent: 7367124 (2008-05-01), Hannewald
patent: 614635 (1994-02-01), None

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