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. 05, 1989
Filed:
Aug. 20, 1987
Osamu Miyazawa, Suwa, JP;
Nobuo Ishikawa, Suwa, JP;
Mamoru Miyasaka, Suwa, JP;
Kenichi Hirota, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
In magnetic read/write apparatus having a media hub (2) made of magnetic material provided with a magnetic disk (1) and a package so as to cover the magnetic disk with a shell, to position the media hub (2) in the axial direction is performed by attaching an end of a spindle hub (17) to a media hub (2), and to position the media hub in the radial direction is performed by attaching the inner side of a center core (4) integrally formed with the media hub (2) to the periphery of the spindle hub (17). Furthermore, a driving pin (21) for contacting the media hub (2) with the spindle hub (17) is provided at the end of the media hub (2) and in the inner side of the center core (4), thereby, making it possible to provide a small-sized spindle hub and an excellent head contact.