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:
Jan. 10, 2012
Filed:
Oct. 05, 2009
Yasutaka Nakamura, Hamamatsu, JP;
Rento Tanase, Iwata, JP;
Atsushi Yoshida, Hamamatsu, JP;
Masaru Matsushita, Hamamatsu, JP;
Yasutaka Nakamura, Hamamatsu, JP;
Rento Tanase, Iwata, JP;
Atsushi Yoshida, Hamamatsu, JP;
Masaru Matsushita, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu-Shi, JP;
Abstract
A sound absorbing structure is constituted of a vibration plate and a rear air layer and is installed in a luggage compartment or trunk which is separated from a cabin in a vehicle. Sound waves entering into the luggage compartment drive the vibration plate to vibrate so that acoustic energy is converted into mechanical energy and is consumed by way of vibration of the vibration plate. By appropriately setting parameters and dimensions, the sound absorbing structure efficiently absorbs low-frequency sound such as road noise occurring due to friction of wheels of the vehicle traveling on a road.