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Disposable Conductive Overshoe

IP.com Disclosure Number: IPCOM000106879D
Original Publication Date: 1993-Sep-01
Included in the Prior Art Database: 2005-Mar-21
Document File: 2 page(s) / 25K

Publishing Venue

IBM

Related People

King, J: AUTHOR

Abstract

Proposed is an electrically conducting overshoe for personnel working in a clean room environment with static sensitive components. The disposable overshoe includes a conducting path from the wearer to the exterior undersole which is in contact with a static dissipative floor.

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Disposable Conductive Overshoe

      Proposed is an electrically conducting overshoe for personnel
working in a clean room environment with static sensitive components.
The disposable overshoe includes a conducting path from the wearer to
the exterior undersole which is in contact with a static dissipative
floor.

      Referring to Fig. 1, a disposable clean room overshoe 1 has a
strip of conductive material 2 attached by adhesive and running along
its underside projecting as a tail 3 from the heel end 4.  The tail 3
is lifted over the heel of the wearer's normal footwear 6 and tucked
under the person's heel 5; or, as shown in Fig. 2, attached around
the person's ankle with an elasticized conducting band 7.  A one
megohm resistor 8 is fitted in series with the strip at the heel end
for safety reasons.

      The 1 meg resistor is to limit the chances of electrocution
where high values of accessible voltages may be present; therefore,
the current from operator to ground is limited to a safe value.