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. 21, 1999
Filed:
Dec. 01, 1997
Paul A Gilovich, Boulder, CO (US);
Other;
Abstract
A hard disk drive apparatus is disclosed which utilizes at least a pair of actuator assemblies each of which includes a plurality of separate actuator arms and spacers stacked on a tubular sleeve which is bearing supported on a stationary actuator shaft. The arms and spacers are preferably ceramic with head leads and preamplifiers carried on the arm. Each actuator stack has heads oriented in only one direction to minimize the spacing between the hard disks. The head disk assembly is built up on the baseplate by installation of layers of actuator arms, spacers and hard disks. The assembled head disk assembly is enclosed between the generally flat baseplate and a top plate by a peripheral housing therearound. The disks are rotated by a dual stator motor located between the baseplate and the top plate with one stator mounted to the baseplate and the other stator mounted to the top plate.