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:
Oct. 24, 2006
Filed:
Jan. 21, 2005
Akihiro Hayashi, Saitama-ken, JP;
Keiji Tamaki, Saitama-ken, JP;
Masakuni Kainuma, Saitama-ken, JP;
Fujikura Rubber Ltd., Tokyo, JP;
Abstract
A vibration isolation device including a stationary housing; a movable top plate positioned horizontally above the stationary housing; an airtight flexible member forming an airtight pressure chamber between the movable top plate and the stationary housing; a vibration-free movable base having a mounting plate portion; and a dome-shaped contacting portion, provided between opposed surfaces of the movable top plate and the mounting plate portion. The movable top plate is moved up and down by varying an internal pressure of the airtight pressure chamber. The vibration-free movable base is moved up and down via the dome-shaped contacting portion. The vibration isolation device includes a biasing device, positioned inside the airtight pressure chamber for holding the planar centers of the movable top plate and the mounting plate portion in contact with each other when the internal pressure of the airtight pressure chamber is smaller than a predetermined value.