Anti-static chair

Details Anti-static chair Anti-static chair

1985-02-22

1986-11-25

Hix, L. T.

Electricity: electrical systems and devices

Discharging or preventing accumulation of electric charge

361220, H05F 302

Patent

active

046252576

ABSTRACT:
A chair for discharging static electricity carried by an occupant has a non-conductive seat covering and an electrode under the covering for permitting the occupant to safely touch a source of current having a moderate voltage of less than about 200 volts, without being shocked thereby. When the charge exceeds a predetermined level, current flows through the covering between the occupant and the conductor, discharging the occupant. The electrode can be a flexible wire or a resilient foam member. A current limiting resistor protects the occupant from high discharge currents. The chair can have a wheeled base of electrically conductive construction for grounding the chair. In one version of the chair, a discrete breakdown device prevents discharge from moderate voltages and the covering can be made conductive.

REFERENCES:
patent: 2858482 (1958-10-01), Nutter
patent: 4208696 (1980-06-01), Lindsay et al.
patent: 4307144 (1981-12-01), Sanders et al.
patent: 4513347 (1985-04-01), Wilcox et al.
"Condulon Low & High Density Conductive Foams" brochure, Bemis Company, Minneapolis, MN 5-1-82.
Anti-Static and Conductive Foam brochure, Controlled Static, Santa Fe Springs, CA.

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