Claims
- 1. A rotatable armset of an actuator having a bore for rotating about an actuator shaft for positioning a head of the actuator radially across a disk of a disk drive, wherein the armset is a one piece unit entirely comprised of an alloy consisting essentially of about 40% to about 95% beryllium and the balance essentially aluminum, the alloy having a microstructure of randomly distributed crystals of aluminum-rich and beryllium-rich phases, and having isotropic properties of high stiffness and low coefficient of thermal expansion.
Parent Case Info
This application is a division of application Ser. No. 08/587,135, filed Jan. 16, 1996, now U.S. Pat. No. 5,578,146, which is a continuation of application Ser. No. 08/333,942, filed Nov. 3, 1994, now abandoned, which is a continuation of application Ser. No. 08/156,356, filed Nov. 23, 1993, now abandoned, which is a continuation of application Ser. No. 07/770,187, filed Oct. 2, 1991, also abandoned.
US Referenced Citations (14)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2123852 |
Feb 1984 |
GBX |
Divisions (1)
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Number |
Date |
Country |
Parent |
587135 |
Jan 1996 |
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Continuations (3)
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Number |
Date |
Country |
Parent |
333942 |
Nov 1994 |
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Parent |
156356 |
Nov 1993 |
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Parent |
770187 |
Oct 1991 |
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