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. 25, 1983
Filed:
Apr. 10, 1981
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360 98 ;
Abstract
A magnetic disk memory device of the invention has a shroud accommodating replaceable or changeable disk packs and air passages through which air is circulated to cool the disk packs and the access mechanism. This air passage is formed, when a shroud cover for closing the space in the shroud is in the closing position, to recirculate the air through the space in the shroud, while, when the shroud cover is in the opening position, to discharge the air delivered by a blower to the outside of the shroud through the opening of the latter. The air passage has an air filter for filtrating the air.