Patent US6600663B1 successfully refreshed from Google Patents.
US6600663B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shielding can for a printed circuit board
Assignee: Nokia Oyj
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Filing: 2000-06-19
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Granted: 2003-07-29
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Expires: 2020-06-19
Abstract
Abstract A shielding can for a printed circuit board which includes a frame with side walls and a lid with apparatus to increase flexibility of the lid. The flexibility apparatus are slits on the sides of the lid. These slits enable a flexible contraction, when soldering the shielding can onto the printed circuit board. The invention also includes a method for mounting the shielding can onto printed circuit boards. The shielding can is placed onto the printed circuit board and heated slowly to melt the solder paste to solder the shielding can to the printed circuit board. The heating phase is followed by a fast cooling phase, and the flexible apparatus (the slits on the shielding can) reduces the internal stress, which occurs when the shielding can is exposed to different temperatures at the same time, without any permanent deformations.
Inventors
- 👤 Eugen Koleda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:19
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0007; H05K9/002; H05K9/0022; H05K9/0024; H05K9/0032; B; B23; B23K; B23K1/00; B23K1/0008; B23K1/0016; B23K2101/00; B23K2101/36; B23K2101/42
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
148 words
A shielding can mountable on a top surface of a printed circuit board, said shielding can comprising: a frame, attachable to the top surface of the printed circuit board, being of substantially rectangular shape and having side walls; and a lid having a top surface which extends in a horizontal direction and side surfaces which extend from the top surface of said lid in a vertical direction with respect to the horizontal direction of the top surface of said lid, wherein said lid can be disposed adjacent to the side walls of said frame in a manner such that said frame and said lid form an enclosed area with the top surface of the printed circuit board, and wherein said lid further includes means, provided on the top surface of said lid, for increasing the flexibility of said lid in at least the horizontal direction of said lid.
Claim 2
Dependent Claim
148 words
A shielding can mountable on a top surface of a printed circuit board, said shielding can comprising: a frame, attachable to the top surface of the printed circuit board, being of substantially rectangular shape and having side walls; and a lid having a top surface which extends in a horizontal direction and side surfaces which extend from the top surface of said lid in a vertical direction with respect to the horizontal direction of the top surface of said lid, wherein said lid can be disposed adjacent to the side walls of said frame in a manner such that said frame and said lid form an enclosed area with the top surface of the printed circuit board, and wherein said lid further includes means, provided on the top surface of said lid, for increasing the flexibility of said lid in at least the horizontal direction of said lid.
Claim 3
Dependent Claim
29 words
A shielding can according to claim 1 , wherein said means for increasing the flexibility of said lid are slits on at least the top surface of said lid.
Claim 4
Dependent Claim
25 words
A shielding can according to claim 2 , wherein said slits are adjacent to the side surfaces of said lid and extend substantially transverse thereto.
Claim 5
Dependent Claim
37 words
A shielding can according to claim 2 , wherein said slits extend to the side surfaces of said lid, and wherein said slits extend substantially transverse to a moving direction of the printed circuit board during soldering.
Claim 6
Dependent Claim
172 words
A shielding can mountable on a top surface of a printed circuit board, said shielding can comprising: a frame, attachable to the printed circuit board, being of substantially rectangular shape and having side walls; and a lid having a top surface which extends in a horizontal direction and side surfaces which extend from the top surface of said lid in a vertical direction with respect to the horizontal direction of the top surface of said lid, wherein said lid can be disposed adjacent to the side walls of said frame in a manner such that said frame and said lid form an enclosed area with the top surface of the printed circuit board, wherein said lid further includes means for increasing the flexibility of said lid in at least the horizontal direction of said lid, wherein said flexibility is accomplished through slits disposed on at least two points on the top surface of said lid, and wherein said slits are adjacent to the side surfaces of said lid extending substantially transverse thereto.
Claim 7
Dependent Claim
172 words
A shielding can mountable on a top surface of a printed circuit board, said shielding can comprising: a frame, attachable to the printed circuit board, being of substantially rectangular shape and having side walls; and a lid having a top surface which extends in a horizontal direction and side surfaces which extend from the top surface of said lid in a vertical direction with respect to the horizontal direction of the top surface of said lid, wherein said lid can be disposed adjacent to the side walls of said frame in a manner such that said frame and said lid form an enclosed area with the top surface of the printed circuit board, wherein said lid further includes means for increasing the flexibility of said lid in at least the horizontal direction of said lid, wherein said flexibility is accomplished through slits disposed on at least two points on the top surface of said lid, and wherein said slits are adjacent to the side surfaces of said lid extending substantially transverse thereto.
Claim 8
Dependent Claim
156 words
A communication terminal comprising: a printed circuit board onto which a shielding can is mounted on a top surface of the printed circuit board, wherein said shielding can comprises: a frame, attachable to the printed circuit board, being of substantially rectangular shape and having side walls, and a lid having a top surface which extends in a horizontal direction and side surfaces which extend from the top surface of said lid in a vertical direction with respect to the horizontal direction of the top surface of said lid, wherein said lid can be disposed adjacent to the side walls of said frame in a manner such that said frame and said lid form an enclosed area with the top surface of the printed circuit board, and wherein said lid further includes means, provided on the top surface of said lid, for increasing the flexibility of said lid in at least the horizontal direction of said lid.
Claim 9
Dependent Claim
156 words
A communication terminal comprising: a printed circuit board onto which a shielding can is mounted on a top surface of the printed circuit board, wherein said shielding can comprises: a frame, attachable to the printed circuit board, being of substantially rectangular shape and having side walls, and a lid having a top surface which extends in a horizontal direction and side surfaces which extend from the top surface of said lid in a vertical direction with respect to the horizontal direction of the top surface of said lid, wherein said lid can be disposed adjacent to the side walls of said frame in a manner such that said frame and said lid form an enclosed area with the top surface of the printed circuit board, and wherein said lid further includes means, provided on the top surface of said lid, for increasing the flexibility of said lid in at least the horizontal direction of said lid.
Claim 10
Dependent Claim
29 words
A communication terminal according to claim 6 , wherein said means for increasing the flexibility of said lid are slits on at least the top surface of said lid.
Claim 11
Dependent Claim
25 words
A communication terminal according to claim 7 , wherein said slits are adjacent to the side surfaces of said lid and extend substantially transverse thereto.
Claim 12
Dependent Claim
39 words
A communication terminal according to claim 8 , wherein said slits are placed on at least two points on said lid, and wherein said slits are adjacent to the side surfaces of said lid and extend substantially transverse thereto.
Claim 13
Independent Claim
239 words
A method for mounting shielding cans, which includes a frame and a lid, on printed circuit boards comprising the steps of: placing, onto a top surface of the printed circuit board, which has been prepared with solder paste, the shielding can in one joined piece, warming the printed circuit board to solder the shielding can onto the printed circuit board; and slowly increasing the soldering temperature to make the solder paste melt entirely followed by a fast cooling phase, wherein said shielding can comprises: a frame, attachable to the top surface of the printed circuit board, being of a substantially rectangular shape and having side walls, and a lid having a top surface which extends in a horizontal direction and side surfaces which extend from the top surface of said lid in a vertical direction with respect to the horizontal direction of the top surface of said lid, wherein said lid can be disposed adjacent to the sidewalls of said frame in a manner such that said frame and said lid form an enclosed area with the top surface of the printed circuit board, and wherein said lid further includes: means, provided on the top surface of said lid, for increasing the flexibility of said lid in at least the horizontal direction of said lid, wherein said means for increasing flexibility is formed by slits on the top surface of said lid, to adapt said lid to temperature changes.
Claim 14
Independent Claim
239 words
A method for mounting shielding cans, which includes a frame and a lid, on printed circuit boards comprising the steps of: placing, onto a top surface of the printed circuit board, which has been prepared with solder paste, the shielding can in one joined piece, warming the printed circuit board to solder the shielding can onto the printed circuit board; and slowly increasing the soldering temperature to make the solder paste melt entirely followed by a fast cooling phase, wherein said shielding can comprises: a frame, attachable to the top surface of the printed circuit board, being of a substantially rectangular shape and having side walls, and a lid having a top surface which extends in a horizontal direction and side surfaces which extend from the top surface of said lid in a vertical direction with respect to the horizontal direction of the top surface of said lid, wherein said lid can be disposed adjacent to the sidewalls of said frame in a manner such that said frame and said lid form an enclosed area with the top surface of the printed circuit board, and wherein said lid further includes: means, provided on the top surface of said lid, for increasing the flexibility of said lid in at least the horizontal direction of said lid, wherein said means for increasing flexibility is formed by slits on the top surface of said lid, to adapt said lid to temperature changes.
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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) | 2006-07-28 | 2007-01-27 | 2007-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-07-28 | 2011-01-27 | 2011-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-07-28 | 2015-01-27 | 2015-07-29 | $7700.00 | Window Closed / Lapsed |