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.
Patent No.:
Date of Patent:
Dec. 04, 2012
Filed:
Jun. 21, 2011
Katsuhisa Ohta, Kawagoe, JP;
Junji Yoshida, Tokorozawa, JP;
Katsuhisa Ohta, Kawagoe, JP;
Junji Yoshida, Tokorozawa, JP;
Mahle Filter Systems Japan Corporation, Tokyo, JP;
Abstract
An intake sound generation apparatus for an internal combustion engine, including an introduction duct connected to an intake passage of an intake system of the engine, a vibration member including a diaphragm portion which is vibrated by intake pulsation in the intake system, and a bellows portion configured to promote vibration of the diaphragm portion, the vibration member being so disposed as to cover one end of the introduction duct, and a resonance duct having one end connected to the introduction duct through the vibration member and the other end opened to an outside of the intake sound generation apparatus, the resonance duct acting to increase and emit a sound pressure of intake sound produced by vibration of the vibration member. A central axis of at least one of the introduction duct and the resonance duct is located offset relative to a central axis of the vibration member.