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:
Sep. 15, 1998
Filed:
Mar. 29, 1996
Applicant:
Inventors:
Akira Takahashi, Kawagoe, JP;
Fuyuki Shirai, Kawagoe, JP;
Jiro Morinaga, Kawagoe, JP;
Yasushi Konno, Kawagoe, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo-to, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369270 ; 369264 ;
Abstract
A clamp unit for a disk comprises a disk table on which a disk is mounted and a clamper disposed in association with the disk table for clamping the disk under pressure therebetween. A film is formed on a surface of either one of the disk table and the clamper and formed of a mixture a synthetic resin and a plurality of fine particles disposed in the synthetic resin, both having viscous and elastic property, and some of the particles are exposed outside an outer surface of the film so as to provide an irregular surface having protruded portions.