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:
Dec. 02, 1997
Filed:
Sep. 05, 1995
Toshihiro Miyazaki, Kodaira, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
A vibration isolating apparatus and a vibration isolating table for reliably controlling vibration of an object of vibration isolation. A coil-mounting main body is mounted on the vibration isolating table and a yoke-mounting main body is mounted on a floor. A coil of the coil-mounting main body is disposed in a gap of a yoke where magnetic flux passes through, in a state in which the coil does not contact the yoke. An acceleration sensor for detecting a vibration is mounted on the vibration isolating table and is connected to a controlling device. The controlling device receives an acceleration detecting signal from the acceleration sensor and controls an electric current applied to the coil such that vibration acting on the vibration isolating table becomes zero. Since the coil and the yoke are disposed in a non-contact state, even though vibration shifted in any direction other than a direction in which the coil moves is generated on the floor, the vibration is not transmitted to the vibration isolating table.