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. 28, 2005
Filed:
May. 29, 2003
Masaaki Itoh, Nishiku, JP;
Shingo Hatakeyama, Osaka, JP;
Yukio Takashima, Osaka, JP;
Takeshi Hamanaka, Ebina, JP;
Masaaki Itoh, Nishiku, JP;
Shingo Hatakeyama, Osaka, JP;
Yukio Takashima, Osaka, JP;
Takeshi Hamanaka, Ebina, JP;
Toyo Tire & Rubber Co., Ltd., Osaka, JP;
Nissan Motor Co., Ltd., Kanagawa, JP;
Abstract
In an anti-vibration device having a partition member dividing a fluid-sealed chamber into upside and downside, aimed at enhancing the anti-vibration performance by preventing unwanted leak of the fluid through through-holes of the partition member. To that end, the partition member is constructed of an elastic membrane partitioning the fluid-sealed chamber, and a pair of grids limiting displacements of the elastic membrane; and the elastic membrane is provided at its either surface with projecting streaks integral therewith, the projecting streaks surrounding through-holes, defined by the grids, over their whole peripheries and abutting on the grids, thereby regulating the flow of fluid among adjacent through-holes.