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:
Feb. 12, 2008
Filed:
Nov. 24, 2004
Toshifumi Sakata, Osaka, JP;
Toshifumi Sakata, Osaka, JP;
Toyo Tire & Rubber Co., Ltd., Osaka, JP;
Abstract
There is provided a hydraulic antivibration device and an assembly capable of obtaining a low dynamic spring characteristic upon input of relatively small amplitude vibrations and reducing sufficiently strange sounds. The low dynamic spring characteristic is obtainable by absorption of hydraulic pressure fluctuations between both liquid chambers due to reciprocating displacement of an elastic partition membrane. First and a second attachment fittings are constituted respectively as body frame side coupling means and as vibration generator or engine side coupling means, whereby part of a vibration transmitting path from partitioning means to the body frame can be formed by a vibration-isolating base. Consequently, even when a vibration is generated by impingement of an elastic partition membrane of the partitioning means on plate members, it is possible to suppress securely transmission of the vibration to the body frame by vibration-insulating effect of the vibration-isolating base, thus reducing greatly generation of strange sounds.