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:
Jun. 10, 2003
Filed:
Nov. 29, 2000
Frederick Frank Kazmierczak, San Jose, CA (US);
Michael Alan Maiers, Longmont, CO (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
The present invention relates to a integrated voice coil motor assembly in a head disc assembly of a disc drive, the head disc assembly having a base plate and the top cover enclosing a data storage disc rotatably mounted on a drive motor, and an actuator arm for transferring data to and from the disc. The voice coil motor has a bottom pole attached to the base plate and a top pole integrated with the top cover. A permanent magnet set is positioned between the bottom pole and a top cover and generates a magnetic field between the bottom pole and the top cover. The top pole rests within a recess in an outer surface of the top cover above the bottom pole and provides a return path for the magnetic field generated by the permanent magnet set. A voice coil is attached to the actuator arm and positioned within the magnetic field between the bottom pole and the top cover.