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:
Dec. 01, 1987
Filed:
Oct. 22, 1986
Applicant:
Inventors:
Hiroshi Imai, Hyogo, JP;
Kouichi Yoshioka, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360 97 ; 360 98 ;
Abstract
An air filter assembly 45, 46, 47 is disposed inside a hermetically sealed housing 1 which encloses fixed hard discs 2 with its intake directly facing a spiralling centrifugal air flow generated by the rotating discs. An air guide or duct 71, 72, 73 communicates the clean air leaving the filter outlet with the low pressure area at the center of the discs. An increased pressure differential across the filter and improved filtration efficiency results. Internal partitions 62, 64 may also be provided to channel the air flow towards the filter inlet.