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. 30, 2003
Filed:
Aug. 03, 1999
Hidekazu Kohira, Odawara, JP;
Masaaki Matsumoto, Fujisawa, JP;
Kiyoshi Hashimoto, Odawara, JP;
Masayoshi Endo, Odawara, JP;
Akio Takakura, Odawara, JP;
Yoshinori Takeuchi, Ishioka, JP;
Shinsuke Higuchi, Odawara, JP;
Akira Iida, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A magnetic head slider for sliding on a magnetic disk includes a leading edge, a trailing edge, an air bearing surface having a front step bearing of submicron depth made from the leading edge, and a rail surface made from the front step bearing. A negative pressure recess which is more profound than the front step bearing is made from the rail surface, and a side step bearing having a depth identical with the front step bearing is made from the rail surface. The ratio of the depth R of the recess to the depth &dgr;S of the front step bearing is R/&dgr;s>5.