US5677511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overmolded PC board with ESD protection and EMI suppression
Assignee: National Semiconductor Corp
•
Filing: 1995-03-20
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Granted: 1997-10-14
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Expires: 2015-03-20
Abstract
Abstract An apparatus directed to portable peripheral cards is disclosed which provides protection against electro-static discharge and electro-magnetic interference. Furthermore, this apparatus provides a solid housing which affords a strong protective structure for the PC board and also protects the ICs housed inside the peripheral card from being easily accessed.
Inventors
- 👤 Carl James Taylor
- 👤 Michael William Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:13
CPC Classifications
H; H05; H05K; H05K5/00; H05K5/02; H05K5/0256; H05K5/026; H05K5/0265; H05K5/0269; G; G06; G06F; G06F13/00; G06F13/38; G06F13/40; G06F13/4063; G06F13/409; H05K3/00; H05K3/22; H05K3/28; H05K3/284; H05K5/0208
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
132 words
A portable peripheral card comprising: a printed circuit board (PC board) having an active region where one or more electrical components are mounted; an electrical connector attached to the PC board, whereby external devices electrically access said one or more electronic components via said electrical connector; a solid package encapsulating the PC board yet leaving a portion of said electrical connector exposed, said solid package being composed of a conductive segment and a non-conductive segment, wherein said non-conductive segment encapsulates said active region of the PC board, and said conductive segment encapsulates a remaining outer perimeter of the PC board surrounding said active region; and a conductive layer overlaying said solid package such that said conductive layer substantially covers the area over said non-conductive segment and further extends over said conductive segment.
Claim 2
Dependent Claim
132 words
A portable peripheral card comprising: a printed circuit board (PC board) having an active region where one or more electrical components are mounted; an electrical connector attached to the PC board, whereby external devices electrically access said one or more electronic components via said electrical connector; a solid package encapsulating the PC board yet leaving a portion of said electrical connector exposed, said solid package being composed of a conductive segment and a non-conductive segment, wherein said non-conductive segment encapsulates said active region of the PC board, and said conductive segment encapsulates a remaining outer perimeter of the PC board surrounding said active region; and a conductive layer overlaying said solid package such that said conductive layer substantially covers the area over said non-conductive segment and further extends over said conductive segment.
Claim 3
Dependent Claim
23 words
A portable peripheral card as recited in claim 1 wherein said conductive segment is from metal and said non-conductive segment is from polymer.
Claim 4
Dependent Claim
16 words
A portable peripheral card as recited in claim 2 wherein said polymer is thermoset plastic material.
Claim 5
Dependent Claim
21 words
A portable peripheral card as recited in claim 2 wherein said metal is pre-fabricated and is clamped to the PC board.
Claim 6
Dependent Claim
22 words
A portable peripheral card as recited in claim 1 wherein said conductive segment is filled polymer and said non-conductive segment is polymer.
Claim 7
Dependent Claim
28 words
A portable peripheral card as recited in claim 5 wherein a conductive trace travels around said outer perimeter of the PC board and electrically contacts said electrical connector.
Claim 8
Dependent Claim
17 words
A portable peripheral card as recited in claim 6 wherein said conductive trace is a ground trace.
Claim 9
Dependent Claim
26 words
A portable peripheral card as recited in claim 1 wherein said conductive segment is from thermoplastic material and said non-conductive segment is from thermoset plastic material.
Claim 10
Dependent Claim
23 words
A portable peripheral card as recited in claim 1 wherein said conductive layer is secured to said solid package via a conductive adhesive.
Claim 11
Dependent Claim
16 words
A portable peripheral card as recited in claim 9 wherein said conductive adhesive is z-axis adhesive.
Claim 12
Dependent Claim
18 words
A portable peripheral card as recited in claim 1 wherein said conductive layer is a sheet of metal.
Claim 13
Dependent Claim
17 words
A portable peripheral card as recited in claim 1 wherein said peripheral card is a PCMCIA card.
Claim 14
Dependent Claim
124 words
A portable peripheral card comprising: a printed circuit board (PC board) having an active region where one or more electrical components are mounted; an electrical connector attached to the PC board, whereby external devices electrically access said one or more electronic components via said electrical connector; a solid package encapsulating the PC board yet leaving a portion of said electrical connector exposed, said solid package being composed of a conductive segment and a non-conductive segment, wherein said non-conductive segment encapsulates said active region of the PC board, and said conductive segment encapsulates a remaining outer perimeter of the PC board surrounding said active region; and a conductive trace that travels around said outer perimeter of the PC board and electrically contacts said electrical connector.
Claim 15
Dependent Claim
124 words
A portable peripheral card comprising: a printed circuit board (PC board) having an active region where one or more electrical components are mounted; an electrical connector attached to the PC board, whereby external devices electrically access said one or more electronic components via said electrical connector; a solid package encapsulating the PC board yet leaving a portion of said electrical connector exposed, said solid package being composed of a conductive segment and a non-conductive segment, wherein said non-conductive segment encapsulates said active region of the PC board, and said conductive segment encapsulates a remaining outer perimeter of the PC board surrounding said active region; and a conductive trace that travels around said outer perimeter of the PC board and electrically contacts said electrical connector.
Claim 16
Dependent Claim
17 words
A portable peripheral card as recited in claim 13 wherein said conductive trace is a ground trace.
Claim 17
Dependent Claim
38 words
A portable peripheral card as recited in claim 14 further comprising a conductive layer overlaying said solid package such that said conductive layer substantially covers the area over said non-conductive segment and further extends over said conductive segment.
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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) | 2000-10-13 | 2001-04-14 | 2001-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-10-13 | 2005-04-14 | 2005-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-10-13 | 2009-04-14 | 2009-10-14 | $7700.00 | Window Closed / Lapsed |