Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
November 18, 2008
Patent Application Number
11414618
Date Filed
April 28, 2006
Patent Citations Received
Patent Primary Examiner
Patent abstract
An exhaust flow rate control valve includes an on-off valve which is switched between a closed state in which a flow passage area of an exhaust pipe is decreased, and an opened state in which the flow passage area is increased. A notch is formed in the on-off valve, and a recess is formed in an inner pipe member of the exhaust pipe to correspond to the notch. A resilient member, for biasing the on-off valve in a closing direction, is disposed in a space formed between the recess and an outer pipe member of the exhaust pipe. Thus, the degree of freedom is improved in setting the operating characteristic of the on-off valve, without increasing the size of an exhaust structure.
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