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:
Aug. 04, 1992
Filed:
Jul. 10, 1990
Koosaku Wakatsuki, Ibaraki, JP;
Shoji Suzuki, Hamamatsu, JP;
Noriaki Okamoto, Ibaraki, JP;
Yuzo Yamaguchi, Tsuchiura, JP;
Katsuaki Kikuchi, Tsuchiura, JP;
Mikio Tokuyama, Tsuchiura, JP;
Yoshinori Takeuchi, Ishioka, JP;
Yoshihiko Miyake, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A magnetic head device has a magnetic head slider by means of which information is recorded in and read from a magnetic recording medium. The magnetic head slider is supported by a supporting structure having an internal cavity, an opening formed in a portion of the structure where the magnetic head slider faces the magnetic recording medium and communicating with the internal cavity, and a gas passage through which the gas introduced into the internal cavity through the opening is discharged to the exterior of the internal cavity. With this arrangement, the pressure acting on the back surface of the magnetic head slider is adjusted to keep the slider afloat, while removing dust suspended in the gas around the recording medium and the supporting structure.