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:
Jun. 05, 2012
Filed:
Dec. 13, 2006
Masaki Ishikawa, Anjyo, JP;
Youhei Ishikawa, Anjyo, JP;
Sohei Matsuyama, Nukata-gun, JP;
Hideyuki Mori, Inuyama, JP;
Masaki Ishikawa, Anjyo, JP;
Youhei Ishikawa, Anjyo, JP;
Sohei Matsuyama, Nukata-gun, JP;
Hideyuki Mori, Inuyama, JP;
Takehiro Co., Ltd., Anjyo-Shi, JP;
Toyota Boshoku Kabushiki Kaisha, Kariya-Shi, JP;
Abstract
The objective of the present invention is to efficiently and inexpensively mass-produce a sound insulator for a vehicle which is light in weight and has excellent sound insulating properties. For this purpose, the ultra-light sound insulator of the present invention is composed of a felt single sheethaving a vehicle interior side surfaceand a vehicle exterior side surfaceand being thermoformed of cotton fibers and binder fibers which are tangled and contacted and jointed to each other in a random manner. The ratio of the stiffness of the vehicle interior side surfaceto that of the vehicle exterior side surfaceis set to be in a range of 1.1 to 10. The single sheetalso has an area of gradually-decreasing stiffnessthat spreads over at least one part of the area between the vehicle interior side surfaceand the vehicle exterior side surface. The area of gradually-decreasing stiffnesshas a stiffness distribution pattern in which the stiffness decreases gradually from the vehicle interior side surfacetoward the vehicle exterior side surfacewith respect to the direction perpendicular to the vehicle exterior side surface