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:
Jul. 21, 2015
Filed:
Jan. 09, 2014
Takehiro Co. Ltd., Anjyo-shi, JP;
Toyota Boshoku Corporation, Kariya-shi, JP;
Toru Inoue, Aichi-ken, JP;
Masaki Ishikawa, Aichi-ken, JP;
Youhei Ishikawa, Aichi-ken, JP;
Sohei Matsuyama, Aichi-ken, JP;
Hideyuki Mori, Aichi-ken, JP;
Takehiro Co., Ltd., Anjyo-shi, JP;
Toyota Boshoku Corporation, Kariya-shi, JP;
Abstract
A sound insulator of the invention includes a sound absorption layer and an air-impermeable resonance layer, which are bonded to each other via an adhesive layer. The sound absorption layer has a thickness in a range of 5 to 50 mm, an area-weight of not greater than 2000 g/mand a two-layer structure of a high-density sound absorption layer and a low-density sound absorption layer. The high-density sound absorption layer is bonded to the air-impermeable resonance layer via the adhesive layer and has a density in a range of 0.05 to 0.20 g/cmand a thickness in a range of 2 to 30 mm. The low-density sound absorption layer is bonded to the other face of the high-density sound absorption layer via an adhesive layer and has a density in a range of 0.01 to 0.10 g/cmand a thickness in a range of 2 to 30 mm.