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:
Mar. 11, 2008
Filed:
Nov. 07, 2003
Hikofumi Yamamoto, Osaka, JP;
Yoshio Ihara, Osaka, JP;
Hikofumi Yamamoto, Osaka, JP;
Yoshio Ihara, Osaka, JP;
Toyo Tire & Rubber Co., Ltd., Osaka-shi, JP;
Abstract
In a hydraulic style vibration-proof device, a lower attachment fitting () forming an air chamber () between a diaphragm () and itself is fabricated of aluminum and is provided at its bottom wall portion with a through-hole (), and a bolt () having a serration portion () below its head is press fitted in and secured to the through-hole, thereby fixedly providing the bolt () without involving a large projection into the air chamber () and at a low cost Further, the bottom wall portion (B) is formed to be thicker than a peripheral wall portion (C) of the lower attachment fitting and both are interconnected by a curved portion (D), thereby achieving an increase in strength.