Handling: hand and hoist-line implements – Utilizing fluid pressure – Venturi effect
Patent
1985-05-17
1987-08-18
Cherry, Johnny D.
Handling: hand and hoist-line implements
Utilizing fluid pressure
Venturi effect
6537413, B25B 1100, B25J 1506
Patent
active
046872426
ABSTRACT:
A semi-conductor wafer handling apparatus for use during fabrication of semi-conductor wafers, made of alumina and having a relieved flat face connected to a source of air pressure differential.
REFERENCES:
patent: 3272350 (1966-09-01), Pflaumer et al.
patent: 3404973 (1968-10-01), Nedelec
patent: 3533771 (1970-10-01), Stehl et al.
patent: 3655233 (1972-04-01), Twist
patent: 3694179 (1972-09-01), Deeg et al.
patent: 3728098 (1973-04-01), Giffen
patent: 4496180 (1985-01-01), Hillman et al.
IBM Technical Disclosure Bulletin, vol. 24, No. 6, Nov. 1981, "Vacuum Wafer Pick-Up Tip" by Ferrentino et al.
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