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. 21, 2000
Filed:
Nov. 18, 1998
Walter Lloyd Prater, San Jose, CA (US);
Gwendolyn Jones Chung, San Jose, CA (US);
Tim Raeburn Lincoln, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An actuator E-block for a rotary data storage device has a number of solid flat arms and flat coil yokes. The arms and yokes are formed from a metal, metal-reinforced metal matrix composites (MMC), ceramic-reinforced MMCs, glasses, ceramics or ceramic composites having a low density metal matrix surrounding reinforcing particles of low density and high specific stiffness. The arms and yokes may be formed as inserts by inexpensive processes such as stamping, blanking or laser scribing. The arm and yoke inserts are placed in a mold and then overmolded with a metal or metal matrix composite E-block body using a thixotropic or semisolid forming process. After molding, these materials and processes form a cost effective, lightweight E-block with a near net shape and enhanced damping and stiffness.