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. 04, 2000
Filed:
Mar. 02, 1998
Norihiro Yamada, Inazawa, JP;
Yoshiki Shimoda, Ichinomiya, JP;
Takashi Maeno, Aichi-ken, JP;
Shigeki Takeo, Nagoya, JP;
Osamu Nakagaki, Ichinomiya, JP;
Masanao Goto, Gifu-ken, JP;
Tetsuya Tsuiki, Aichi-ken, JP;
Tatsuo Suzuki, Inazawa, JP;
Tetsuo Asano, Komaki, JP;
Toyoda Gosei Co., Ltd., Aichi-ken, JP;
Abstract
A liquid-sealing type vibration isolating apparatus including a first coupling member attached to a vibrator; a second coupling member attached to a member in a vehicle body; an insulator interposed between the coupling members, for absorbing and isolating vibration from the vibrator; a vibration isolating mechanism composed of a main chamber having a chamber wall formed by a portion of the insulator, and charged therein with liquid, an auxiliary chamber communicated with the main chamber through an orifice and having a chamber wall a portion of which is formed by a first diaphragm, an air chamber partitioned from the auxiliary chamber across the first diaphragm, and an equilibrium chamber partitioned from the auxiliary chamber across a second diaphragm; a selector for carrying out change-over operation so as to introduce negative pressure or the atmospheric pressure into the equilibrium chamber in the vibration isolating mechanism control for controlling the change-over operation of the selector, a negative pressure tank provided between a negative pressure source and the selector, and a check valve formed between the negative pressure tank and the negative pressure source, for allowing introduction of only negative pressure, and a solenoid mechanism for driving the selector.