Patent US4255941A successfully refreshed from Google Patents.
US5895884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shielding device with push fit lid
Assignee: Nokia Technologies Oy
•
Filing: 1996-02-05
•
Granted: 1999-04-20
•
Expires: 2016-02-05
Abstract
Abstract A shielding device is formed from two unitary pieces, one of which pieces is a generally planar member taking the form of a lid and the other piece takes the form of a side wall member which is adapted for mounting to a substrate surface on which is mounted electric circuit elements. The two pieces together combine to create a shielding device for inhibiting the passage of electromagnetic radiation to and/or from a group of circuit elements disposed on a substrate. The lid may have flanges for connection onto the side wall member and the side wall member may have intersecting dividing walls disposed internally thereof.
Inventors
- 👤 Brian James Davidson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:54
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0007; H05K9/002; H05K9/0022; H05K9/0024; H05K9/0032; Y; Y10; Y10S; Y10S174/00; Y10S174/34
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
145 words
A shielding device for inhibiting the passage of electromagnetic radiation to and from a group of circuit elements disposed on a substrate surface comprising: a side wall member adapted for mounting on the substrate surface, wherein said side wall member is a unitary member constructed from a single planar sheet, said side wall member comprising a plurality of side walls wherein selective bending of pre-defined discrete areas of the planar sheet along respective axes forms adjacent side walls, and a push fit lid for removable attachment to the side wall member, such that removal of the lid allows access to the circuit elements disposed on the substrate surface, and wherein said side wall member further comprises an internal wall defining compartments separated from each other by said internal wall, said internal wall being formed by the selective bending of pre-defined areas of the planar sheet.
Claim 2
Dependent Claim
145 words
A shielding device for inhibiting the passage of electromagnetic radiation to and from a group of circuit elements disposed on a substrate surface comprising: a side wall member adapted for mounting on the substrate surface, wherein said side wall member is a unitary member constructed from a single planar sheet, said side wall member comprising a plurality of side walls wherein selective bending of pre-defined discrete areas of the planar sheet along respective axes forms adjacent side walls, and a push fit lid for removable attachment to the side wall member, such that removal of the lid allows access to the circuit elements disposed on the substrate surface, and wherein said side wall member further comprises an internal wall defining compartments separated from each other by said internal wall, said internal wall being formed by the selective bending of pre-defined areas of the planar sheet.
Claim 3
Dependent Claim
30 words
A shielding device as claimed in claim 1 wherein said side wall member further comprises complementary interlocking apertures and projections for mechanically coupling respective walls of said side wall member.
Claim 4
Dependent Claim
25 words
A shielding device as claimed in claim 1 wherein the push fit is enabled by a plurality of flanges depending from the push fit lid.
Claim 5
Dependent Claim
26 words
A shielding device as claimed in claim 3 wherein at least one of the plurality of flanges is arranged for disposition outside the side wall member.
Claim 6
Dependent Claim
26 words
A shielding device as claimed in claim 3 wherein at least one of the plurality of flanges is biased for contact with the side wall member.
Claim 7
Dependent Claim
42 words
A shielding device as claimed in claim 3 wherein at least one of the plurality of flanges includes a projection extending towards a contact surface of the side wall member for improved electrical conduction between the side wall member and the lid.
Claim 8
Dependent Claim
34 words
A shielding device as claimed in claim 6 wherein the side wall member comprises a recess for accommodating said projection of said at least one of the plurality of flanges in the closed position.
Claim 9
Dependent Claim
14 words
A shielding device as claimed in claim 7 wherein the recess is an aperture.
Claim 10
Dependent Claim
25 words
A shielding device as claimed in claim 1 wherein the lid includes sprung fingers for providing electrical contact between the lid and the internal wall.
Claim 11
Dependent Claim
21 words
A shielding device as claimed in claim 1 wherein the shielding device is made from a metal or a metal alloy.
References Cited (Backward Citations)
GB569281A
Cited
US3234318A
Cited
US3909726A
Cited
GB2029645A
Cited
GB2152291A
Cited
GB2156162A
Cited
EP0265285A2
Cited
US4816613A
Cited
US4912604A
Cited
US4945633A
Cited
US5006667A
Cited
US5271056A
Cited
US5400949A
Cited
US5442521A
Cited
US5365410A
Cited
US5175395A
Cited
WO1994006268A1
Cited
US5354951A
Cited
GB2285181A
Cited
US5495399A
Cited
US5539150A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-04-19 | 2002-10-19 | 2003-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-04-19 | 2006-10-19 | 2007-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-04-19 | 2010-10-19 | 2011-04-20 | $7700.00 | Window Closed / Lapsed |