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:
Nov. 17, 1987
Filed:
Aug. 07, 1985
Applicant:
Inventors:
Shailesh Patel, San Jose, CA (US);
Wolfgang Dirks, Monte Sereno, CA (US);
Assignee:
Apple Computer, Inc., Cupertino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360106 ; 360 98 ;
Abstract
A disk drive which includes an actuator motor whose magnets and iron path are mounted on the arm assembly to act as a counter weight. The coil of the actuator motor is mounted to the base of the disk drive with the iron path disposed around the coil and the iron core disposed through the center of the coil and all are mounted on the iron path and face the coils. By utilizing the iron path and magnets as a counterbalance, the total mass of the arm is reduced, reducing the inertia of the arm and of the power requirements of the actuator motor to move the arm.