Patent US4833276A successfully refreshed from Google Patents.
US4833276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shield structure of electronic equipment
Assignee: Alps Alpine Co Ltd
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Filing: 1987-08-21
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Granted: 1989-05-23
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Expires: 2007-08-21
Abstract
Abstract In a shield structure of an electronic equipment including a printed circuit board on which electronic parts are mounted, a box having an upper opening for receiving the printed circuit board, and a shielding planar cover for shieldably covering the upper opening of the box, the cover being soldered at its peripheral edge to a side wall of the box; the improvement is characterized in that the peripheral edge of the cover is arcuately downwardly bent.
Inventors
- 👤 Takeo Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:20
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0007; H05K9/002; H05K9/0022; H05K9/0024; H05K9/0032; H05K9/0033
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
108 words
In a shield structure of an electronic equipment including a printed circuit board on which electronic parts are mounted, a box having an upper opening for receiving said printed circuit board, and a shielding planar cover for shieldably covering said upper opening of said box, said cover being soldered at its peripheral edge to a side wall of said box; the improvement characterized in that said peripheral edge of said cover is arcuately downwardly bent, wherein a lower end of each bent portion forms a straight portion, and a plurality of stopper projections are formed at a lower end of each straight portion along a longitudinal direction thereof.
Claim 2
Dependent Claim
108 words
In a shield structure of an electronic equipment including a printed circuit board on which electronic parts are mounted, a box having an upper opening for receiving said printed circuit board, and a shielding planar cover for shieldably covering said upper opening of said box, said cover being soldered at its peripheral edge to a side wall of said box; the improvement characterized in that said peripheral edge of said cover is arcuately downwardly bent, wherein a lower end of each bent portion forms a straight portion, and a plurality of stopper projections are formed at a lower end of each straight portion along a longitudinal direction thereof.
Claim 3
Dependent Claim
48 words
The shield structure as defined in claim 1, wherein said cover is positioned on said printed circuit board by means of said stopper projections of said cover, and is closely fitted with said box by resiliently contacting said straight portion with an inner wall surface of said box.
Claim 4
Dependent Claim
28 words
The shield structure as defined in claim 2, wherein an upper surface of said cover is flush with an upper edge of the side wall of said box.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |