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:
Mar. 16, 2010
Filed:
Aug. 17, 2006
Ashok Nayak, Glendora, CA (US);
John Ycas, Boulder, CO (US);
Turguy Goker, Solana Beach, CA (US);
Ming-chih Weng, Los Angeles, CA (US);
James Mark Decot, Fountain Valley, CA (US);
Ashok Nayak, Glendora, CA (US);
John Ycas, Boulder, CO (US);
Turguy Goker, Solana Beach, CA (US);
Ming-chih Weng, Los Angeles, CA (US);
James Mark Decot, Fountain Valley, CA (US);
Quantum Corporation, San Jose, CA (US);
Abstract
A servo-controlled, head actuator design that has low profile characteristics in both the height and width dimensions. The low height allows the actuator to fit into a half-high tape drive form factor. Additionally, in some implementations, the actuator comprises a smaller, concentrated moving mass coupled with a flexure construction having a narrowed width with added ribs for torsional stiffness. These aspects of the actuator provide a higher second mode of vibration compared to the flexure designs of the prior art. The actuator includes a coarse actuator assembly for larger movements of the head, and a fine actuator, including a Voice coil motor, responsive to analysis of servo signals. In some embodiments, the voice coil motor of the fine actuator and the coarse actuator shafts are in line. Since the centerlines of the shafts are in-line with the voice coil motor, the resonance response of the shaft spring-mass system is reduced.