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. 13, 1992
Filed:
May. 03, 1990
Applicant:
Inventor:
Yu-Chuan Lee, Cupertino, CA (US);
Assignee:
Microscience International Corp., San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ; B65D / ; G11B / ; F16C / ;
U.S. Cl.
CPC ...
360 9807 ; 360 9908 ; 277 80 ; 277135 ; 384133 ;
Abstract
The present invention is a disk spindle motor cap. By affixing the cap to the cylindrical shaft of a disk drive, the amount of magnetic ferrofluid escaping from the well between the hub and the cylindrical shaft of the disk spindle assembly is reduced.