Patent US5204497A successfully refreshed from Google Patents.
US5204497A
Expired / Lapsed
US
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Computer front panel with offset airflow louvers
Assignee: Mei California Inc
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Filing: 1990-05-30
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Granted: 1993-04-20
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Expires: 2010-05-30
Abstract
Abstract A computer front panel including louvered offset slots oriented to minimize or negate the transmission of internally generated electromagnetic interference outwardly through the slots. The slots include slot openings which align along a horizontal plane through which flow of cooling air in a vertical fashion only is allowed. The slots, slot opening surfaces and the entire inner back surface of the RF front panel is coated with a metallic conductive substance to shunt any electromagnetic RF interference to ground.
Inventors
- 👤 Gregory E. Herrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:46
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0007; H05K9/0041; G; G06; G06F; G06F1/00; G06F1/16; G06F1/18; G06F1/181; G06F1/182
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
43 words
Panel for a personal computer comprising: a. a panel member constructed to be resistant to RF transmission; b. a plurality of louvers in said front panel; and, c. an offset means in each of said louvers for blocking the path of RF transmission.
Claim 2
Dependent Claim
43 words
Panel for a personal computer comprising: a. a panel member constructed to be resistant to RF transmission; b. a plurality of louvers in said front panel; and, c. an offset means in each of said louvers for blocking the path of RF transmission.
Claim 3
Dependent Claim
60 words
Computer face panel comprising: a. a computer panel face plate constructed of material resistant to RF transmission; b. a plurality of horizontal ventilation slots extending through said face plate; and, c. a plurality of offsets in each of said slots for eliminating straight paths through the slots for preventing passage of RF energy through the slots while allowing air passage.
Claim 4
Dependent Claim
60 words
Computer face panel comprising: a. a computer panel face plate constructed of material resistant to RF transmission; b. a plurality of horizontal ventilation slots extending through said face plate; and, c. a plurality of offsets in each of said slots for eliminating straight paths through the slots for preventing passage of RF energy through the slots while allowing air passage.
Claim 5
Dependent Claim
19 words
A computer face plate of claim 2 wherein each of said offsets includes at least two opposing angled bends.
Claim 6
Dependent Claim
150 words
A ventilating panel for a personal computer comprising: a. a panel wall generally resistant to RF transmission from inside the personal computer to the exterior; b. ventilating slots in the wall for allowing passage of cooling air from the exterior into the personal computer and for generally blocking RF transmission from inside the personal computer to the exterior; and, c. the slots including a generally vertical passage for receiving cooling air from the exterior, a generally horizontal passage connected to the vertical passage and extending to the interior of the wall for allowing the cooling air from the vertical passage to continue into the interior of the computer, the angle of connection of the vertical passage to the horizontal passage being constructed so that RF transmission from inside the computer following the horizontal passage would be obstructed by the wall and prevented from escaping to the exterior of the wall.
Claim 7
Dependent Claim
150 words
A ventilating panel for a personal computer comprising: a. a panel wall generally resistant to RF transmission from inside the personal computer to the exterior; b. ventilating slots in the wall for allowing passage of cooling air from the exterior into the personal computer and for generally blocking RF transmission from inside the personal computer to the exterior; and, c. the slots including a generally vertical passage for receiving cooling air from the exterior, a generally horizontal passage connected to the vertical passage and extending to the interior of the wall for allowing the cooling air from the vertical passage to continue into the interior of the computer, the angle of connection of the vertical passage to the horizontal passage being constructed so that RF transmission from inside the computer following the horizontal passage would be obstructed by the wall and prevented from escaping to the exterior of the wall.
Claim 8
Dependent Claim
34 words
The panel of claim 4 wherein the wall is made of plastic and has the interior side coated with metal conductive paint for shunting to ground any radio frequency transmission directed at the panel.
Claim 9
Dependent Claim
34 words
The panel of claim 4 wherein the wall is made of plastic and has an interior side coated with metallic conductive paint for shunting to ground any radio frequency transmission directed at the panel.
Claim 10
Dependent Claim
45 words
Panel for a personal computer comprising: a. a personal computer panel member constructed of material resistant to RF transmission; b. a plurality of louvers in said front panel; and, c. an offset means in each of said louvers for blocking the path of RF transmission.
Claim 11
Dependent Claim
45 words
Panel for a personal computer comprising: a. a personal computer panel member constructed of material resistant to RF transmission; b. a plurality of louvers in said front panel; and, c. an offset means in each of said louvers for blocking the path of RF transmission.
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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) | 1996-04-19 | 1996-10-19 | 1997-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-19 | 2000-10-19 | 2001-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-19 | 2004-10-19 | 2005-04-20 | $7700.00 | Window Closed / Lapsed |