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:
Jan. 31, 1984
Filed:
Sep. 28, 1981
Applicant:
Inventors:
Normand A Berube, North Andover, MA (US);
Pavel Otavsky, Southboro, MA (US);
Sigmund Hinlein, Sudbury, MA (US);
Thomas Wiseley, Acton, MA (US);
Assignee:
Data General Corporation, Westboro, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360 97 ;
Abstract
A rigid magnetic disc memory apparatus having an aperture formed in the base such that contaminants from the bearings are removed before they can migrate into the vicinity of the discs. In a preferred embodiment the aperture is located in the region of high pressure created by a rotor and stator assembly. The pressure differential causes air and contaminants to flow out of the disc drive enclosure. The pressure differential across the aperture is increased by connecting a duct between the aperture and the inlet side of the clean air supply blower.