US6625039B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
EMI spring configuration
Assignee: International Business Machines Corp
•
Filing: 2001-08-29
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Granted: 2003-09-23
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Expires: 2021-08-29
Abstract
Abstract An electromagnetic shield system for cartridge-based printed circuit cards inserted into a printed circuit mother board comprises a card level system and a board level system which are electrically connected upon card insertion to provide more effective EMI shielding system. Prongs on a card level tab provide continuous EMI shielding even as card insertion operations are taking place. The principal linkage between the card level and board level systems is provided by a flexible shield strip which mates with apertures in a conductive board stiffener and simultaneously contacts not only a conductive cartridge bezel, but also contacts an EMI shield plate disposed on the printed circuit card.
Inventors
- 👤 Dennis R. Barringer
- 👤 Harold M. Toffler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:00
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0062
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
66 words
A substantially flat EMI shield comprising an elongate strip of conductive material with a first edge which includes a plurality of engagement slots with slot openings which open in a direction outwardly from said first edge of said strip, said strip further including a plurality of flexible tabs disposed along a second edge of said strip which edge is opposite said first edge of said strip.
Claim 2
Dependent Claim
66 words
A substantially flat EMI shield comprising an elongate strip of conductive material with a first edge which includes a plurality of engagement slots with slot openings which open in a direction outwardly from said first edge of said strip, said strip further including a plurality of flexible tabs disposed along a second edge of said strip which edge is opposite said first edge of said strip.
Claim 3
Dependent Claim
12 words
The shield of claim 1 in which said shield comprises a metal.
Claim 4
Dependent Claim
13 words
The shield of claim 1 in which said shield comprises an integral structure.
Claim 5
Dependent Claim
16 words
The shield of claim 1 in which said shield is formed by stamping and forming operations.
Claim 6
Dependent Claim
25 words
The shield of claim 1 further including at least one prong extending into at least one of said engagement slots, whereby electrical connection is facilitated.
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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) | 2006-09-22 | 2007-03-24 | 2007-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-09-22 | 2011-03-24 | 2011-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-09-22 | 2015-03-24 | 2015-09-23 | $7700.00 | Window Closed / Lapsed |