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:
Aug. 16, 1994
Filed:
Jan. 07, 1993
Applicant:
Inventors:
Akihiro Kasahara, Kawasaki, JP;
Akira Yamada, Yokohama, JP;
Takashi Yoshizawa, Yokohama, JP;
Katsutoshi Wada, Kawasaki, JP;
Hideo Yamasaki, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
F16F / ;
U.S. Cl.
CPC ...
188378 ; 188267 ; 188268 ; 267136 ;
Abstract
A viscoelastic substance which is useful in an objective lens driving apparatus has magnetic particles dispersed therein for generating a force for restoring deformation of the viscoelastic substance when an external force acts upon the viscoelastic substance in the presence of an external magnetic field.