Die cut disposable grounding wrist strap

Details Die cut disposable grounding wrist strap Die cut disposable grounding wrist strap

1989-10-06

1991-07-16

Scott, J. R.

Electricity: electrical systems and devices

Discharging or preventing accumulation of electric charge

Specific conduction means or dissipator

439 37, H05F 302

Patent

active

050329480

ABSTRACT:
An inexpensive grounding wrist strap and tether for draining excess electrostatic charge, which may be used once and then disposed. The strap and tether are formed integrally and include a conductive strip having a discrete resistance portion for safety considerations. The discrete resistance portion is formed by making a zig-zag pattern of cuts in the conductive strip, thereby increasing the length of the current path through the discrete resistance portion. Due to the slight resistivity of the conductive strip, the lengthened current path results in a discrete resistance being built into the strip. The cuts may be made in the strip at the same time the strip is fashioned out of a sheet of the conductive material, such as carbon loaded polyethylene.

REFERENCES:
patent: 3857397 (1974-12-01), Brosseau
patent: 4698724 (1987-10-01), Burvee

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