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:
Apr. 21, 1987
Filed:
Nov. 03, 1983
Muneo Iida, Odawara, JP;
Jyosei Simizu, Odawara, JP;
Masami Suzuki, Yokohama, JP;
Nobuyuki Okamoto, Odawara, JP;
Toshinori Kazama, Hiratsuka, JP;
Masanobu Honda, Odawara, JP;
Jiro Mochida, Yokohama, JP;
Seiji Tada, Odawara, JP;
Masayuki Fujii, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A magnetic disk storage device capable of avoiding the occurrence of vibration of magnetic disks and off-track of magnetic heads with respect to the magnetic disks, including an inner shroud enclosing a disk assembly composed of a multiplicity of magnetic disks stacked in superposed relation with spacers being interposed therebetween and formed at its outer peripheral wall with first ports for inserting access arms therethrough and at its top above a spindle supporting the disk assembly with a second port, a cylindrical filter for removing dust from air flowing through the second port of the inner shroud into the interior thereof, and a dust cover enclosing the inner shroud, actuators and filter. The provision of the inner shroud is conductive to prevention of development of turbulent air flow in the vicinity of the magnetic disks. The inner shroud is further formed at its outer peripheral wall with a multiplicity of small apertures for releasing heat generated in the inner shroud to outside, to thereby avoid thermal off-track of the magnetic heads.