Workpiece handling end-effector and a method for processing workpieces using a workpiece handling end-effector
US6752442B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2001 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | Jan 31, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S414/141
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A two sided wafer handling end-effector provides for the efficient loading and unloading of wafers into and out of a wafer processing apparatus. Each side of the end-effector includes spaced apart rotatable catch mechanisms between which a wafer is firmly grasped. When the end-effector is positioned beneath the wafer processing apparatus, the catch mechanisms are rotated to an open position and a lifting surface on the catch mechanisms lifts the wafer into the wafer processing apparatus. When the catch mechanisms are in the open position, the wafer is centered on the end-effector by rotatable rocker assemblies that contact the edge of the wafer. As the end-effector is raised into contact with the processing apparatus, the rocker assemblies rotate to a lowered position in the end-effector while arcuate surfaces on the assemblies maintain contact with the wafer edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.