US4494651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically conductive anti-static work station
Assignee: FLAMBEAU AIRMOLD Corp
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Filing: 1983-04-19
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Granted: 1985-01-22
•
Expires: 2003-04-19
Abstract
Abstract A portable work station for transporting a device sensitive to external electrical forces and, in particular, to static electricity is provided. The work station which is manufactured from an electrically conductive composition which acts to shield the contents of the container from external electrical forces is provided with an electrically conductive window means and electrical charge grounding means all of which are in electrically conductive communication with each other. In one embodiment the work station is provided with an internal electrically conductive anti-static pad.
Inventors
- 👤 Donald A. Malcolm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:39
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0067
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
145 words
A portable work station adapted to transport a device sensitive to electrical forces, said work station comprising: a double walled electrically conductive enclosure defining an orifice and an interior, said enclosure comprising electrically conductive window means for viewing said interior through said orifice; wherein said electrically conductive window means comprises: window recess means completely surrounding said orifice and having at least one hole located therein; a sheet of optically transparent electrically non-conductive material located in said window recess means and completely covering said orifice, said sheet having an electrically conductive surface; and an electrically conductive frame-like structure maintaining electrically conductive communication between said enclosure and said surface comprising: at least one leg, said leg being inserted into said hole and a sheet retaining indent retaining engaging said sheet to said window recess means; whereby the interior of said closure is shielded from external electrical forces.
Claim 2
Dependent Claim
145 words
A portable work station adapted to transport a device sensitive to electrical forces, said work station comprising: a double walled electrically conductive enclosure defining an orifice and an interior, said enclosure comprising electrically conductive window means for viewing said interior through said orifice; wherein said electrically conductive window means comprises: window recess means completely surrounding said orifice and having at least one hole located therein; a sheet of optically transparent electrically non-conductive material located in said window recess means and completely covering said orifice, said sheet having an electrically conductive surface; and an electrically conductive frame-like structure maintaining electrically conductive communication between said enclosure and said surface comprising: at least one leg, said leg being inserted into said hole and a sheet retaining indent retaining engaging said sheet to said window recess means; whereby the interior of said closure is shielded from external electrical forces.
Claim 3
Dependent Claim
43 words
The portable work station of claim 1 further comprising electrically conductive anti-static pad means located within said interior; electrically conductive grounding means; and wherein said window means, said pad means and said grounding means are in electrically conductive communication with said enclosure means.
Claim 4
Dependent Claim
30 words
The portable work station of claim 1, wherein said electrically conductive enclosure means comprises a blend of from 75-85 weight percent polyethylene and from 15-25 weight percent electrically conductive particles.
Claim 5
Dependent Claim
30 words
The portable work station of claim 1, wherein said electrically conductive enclosure means comprises a blend of from 75-85 weight percent polyethylene and from 15-25 weight percent of aluminum particles.
Claim 6
Dependent Claim
16 words
The portable work station of claim 3, wherein said electrically conductive particles comprise carbon black particles.
Claim 7
Dependent Claim
15 words
The portable work station of claim 3, wherein said electrically conductive particles comprise aluminum particles.
Claim 8
Dependent Claim
17 words
The portable work station of claim 1, wherein said optically transparent electrically non-conductive material comprises a polycarbonate.
Claim 9
Dependent Claim
29 words
The portable work station of claim 1, wherein said frame-like structure comprises a blend of from 75-85 weight percent polyethylene and from 15-25 weight percent of carbon black particles.
Claim 10
Dependent Claim
20 words
The portable work station of claim 1, wherein said electrically conductive surface comprises a sputter coating of indium tin oxide.
Claim 11
Dependent Claim
19 words
The portable work station of claim 2, wherein said pad comprises a foamed polyethylene loaded with carbon black particles.
Claim 12
Dependent Claim
20 words
The portable work station of claim 2, wherein said pad comprises a hydroscopic wetting composition located on the surface thereof.
Claim 13
Dependent Claim
25 words
The portable work station of claim 2, wherein said pad is foamed, shaped, and contoured to the shape of at least one electrically sensitive device.
Claim 14
Dependent Claim
20 words
The portable work station of claim 8, wherein said electrically conductive surface comprises a sputter coating of indium time oxide.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-22 | 1988-07-23 | 1989-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-22 | 1992-07-23 | 1993-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-22 | 1996-07-23 | 1997-01-22 | $7700.00 | Window Closed / Lapsed |