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:
Sep. 15, 1998
Filed:
Jun. 07, 1995
Ramgopal Battu, Los Angeles County, CA (US);
Iraj Jabbari, Santa Clara County, CA (US);
Sanjoy Ghose, Santa Cruz County, CA (US);
Seagate Technologies, Inc., Scotts Valley, CA (US);
Abstract
A disc drive system having at least one hard disc having concentric tracks is supported by a hub positioned in a centrally located aperture. The disc is rotated at a constant speed by a DC motor attached to the hub. A transducer head for communicating information with the hard disc is moved relative to the disc surface by a positioning apparatus. The positioning apparatus includes a voice coil motor for selectably and accurately positioning the transducer head over the tracks on the hard disc. The disc drive system is enclosed in a housing having a base portion and a roof portion. The positioning apparatus includes a shaft about which the transducer head rotates to move the transducer from track to track. In one configuration, permanent magnets are attached to the base and roof, and a moving coil is interposed between them, the housing completing a magnetic circuit in the VCM. In one aspect the disc drive system is designed to be permanently mounted in a portable, lap-top or notebook computer. Alternatively, it is adaptable for insertion and removal from a connector port in the computer.