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:
Jun. 12, 2001
Filed:
Dec. 19, 1997
Motohiro Umehara, Shiga, JP;
Masaki Sato, Shiga, JP;
Kyocera Corporation, Kyoto, JP;
Abstract
An apparatus characterized by disposing a magnetic head,at one side of a transparent disk,, and light emitting means,and light detecting means,at other side, for measuring the flying height h of the magnetic head,by detecting the reflected light,of the light emitted to the magnetic head,from the light emitting means,through the transparent disk,, while rotating the transparent disk,disk and lifting the magnetic head,, which is extended in the life of the transparent disk,, reduced in weight, and free from adverse effects of static electricity if decreased in the flying height h of the magnetic head,. The transparent disk,is formed of monocrystalline sapphire.