Disk processing chuck

US6145849A · kind A · utility

Assignee

• Komag, Inc. · US

Inventors

• Peter S. Bae · Sunnyvale, US
• Stanley M. Smith · Clarence Center, US
• Kang Jia · Fremont, US
• Warren C. Schroeder · Washington, US
• Michael Edwin Slafter · Ivins, US
• Ronald Allen · San Jose, US

Key dates

• Filing date: Nov 18, 1998
• Grant date: Nov 14, 2000
• Expiry date: Nov 18, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T279/3487
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A memory disk having a central opening and planar sides for receiving magnetic media on both of the sides is bounded by a cylindrical outside diameter peripheral edge and chamfered edges extending between each of the planar sides. The peripheral edge is clamped by a disk processing chuck including a disk retainer mount having a central disk support for mounting a circular disk edge bounding the central opening and a mount cylindrical beveled edge receiving an outside diameter chamfered edge of the disk. A ring in the retainer mount includes a multiplicity of spaced radial fingers extending cylindrically around the ring, each finger having a distal end extending to a first position outboard of the disk peripheral edge. The distal ends are moveable inwardly to a second position by an inflatable bladder acting simultaneously against all the fingers, placing the distal end tips into clamping contact with the disk peripheral edge mounted on the retainer mount.