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. 30, 1984
Filed:
Feb. 22, 1982
George W Brock, Los Altos Hills, CA (US);
Alfred W Conner, Palo Alto, CA (US);
Verbatim Corporation, Sunnyvale, CA (US);
Abstract
An improved magnetic flexible disk for use in data storage is provided with a stabilized locating ring about the spindle aperture thereof. The stabilized locating ring is selected from an electrically conductive material having miniscule humidital expansion characteristics at normal use temperatures. The stabilized locating ring has an inside diameter precisely equal to the outside diameter of the drive spindle on the disk drive apparatus for which the disk is designed to be utilized. The locating ring is bonded onto an existing disk which has had its central aperture punched to be slightly oversized. The improved disk is characterized by its longer usable lifetime, substantially elimination of errors in registration and increased data capacity.