Browse Prior Art Database

Sub-Miniature Disk Outside Diameter Gripper

IP.com Disclosure Number: IPCOM000114512D
Original Publication Date: 1994-Sep-01
Included in the Prior Art Database: 2005-Mar-28
Document File: 4 page(s) / 80K

Publishing Venue

IBM

Related People

Authors:
Mello, T Perrault, JD Seing, HS [+details]

Abstract

A subminiature disk Outside Diameter (OD) gripper design was required for use with a Rotational Transport Assembly (RTA) to load and unload hard storage disks 95mm and smaller in diameter during manufacture and testing. In prior art, disk grippers were designed to handle disks with 65mm and larger diameters. As a result, the commercially available grippers intended for very much larger disks were not suited for handling the smaller disks that have come into use with the industry trend toward ever-increasing density and miniaturization. For one thing, grippers designed to handle relatively large, thick disks can cause damage to thinner ones; for another, the relatively higher mass of the components of large grippers limits the speed at which they move--and consequently on the throughput of the RTA.