Electrostatic discharge protection system

Details Electrostatic discharge protection system Electrostatic discharge protection system

1989-05-12

1991-02-12

Pellinen, A. D.

Electricity: electrical systems and devices

Discharging or preventing accumulation of electric charge

Specific conduction means or dissipator

242 76, 226168, 226196, H01L 2360, H05F 302, H05F 304

Patent

active

049929070

ABSTRACT:
An electrostatic discharge protection system for use in connection with a pulley or sprocket of the type having a central hub portion and opposite side portions. The hub portion is electrically non-conductive and is rotatably carried on a conductive shaft. The side portions are provided with conductive portions or members. A zener diode is connected between each conductive portion and the conductive shaft to enable electrostatic charges on each side of the pulley or sprocket to be safely drained off. Electrostatic charges present on strip material drawn over a pulley, sprocket or guide are also drained with the protection system. The system is also useful in connection with fixed guides which do not rotate.

REFERENCES:
patent: 3140621 (1964-07-01), Stone
patent: 3176931 (1965-04-01), Hannay
patent: 4402593 (1983-09-01), Bernard et al.
patent: 4814698 (1989-03-01), St. Onge et al.
patent: 4831488 (1989-05-01), Playe

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