US6181573B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-part electromagnetic radiation shielding device for mounting on a printed circuit board
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 1998-03-18
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Granted: 2001-01-30
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Expires: 2018-03-18
Abstract
Abstract A two-part electromagnetic radiation shielding device ( 10 ) for mounting on a Printed Circuit Board (PCB). The device ( 10 ) comprises a substantially open frame member ( 6 ) for receiving an electric or electronic component requiring shielding, and a closing can or cover member ( 1 ). The frame and cover members ( 6; 1 ) are constructed from electrically conductive material and have peripheral sides ( 7; 3 ) adapted to grip each other such that, in use, the frame and cover member ( 6; 1 ) surround the component in a closing arrangement. The peripheral sides ( 7; 3 ) of the frame and cover member ( 6; 1 ) have a shape such that a continuous gripping force is exerted ( 14 ) to establish and maintain circumferential electrical contact ( 13 ) between the frame and cover member ( 6; 1 ) at facing edges ( 5; 11 ) of the peripheral sides ( 3; 7 ) of the members ( 1; 6 ). Separate mechanical ( 14 ) and electrical ( 13 ) engagements are provided for optimum Electro Magnetic Compatibility (EMC) shielding.
Inventors
- 👤 Johan Te Riet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:10
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0007; H05K9/002; H05K9/0022; H05K9/0024; H05K9/0032
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
167 words
A two-part electromagnetic radiation shielding device for mounting on a Printed Circuit Board (PCB) and surrounding an electric or electronic component requiring shielding and mounted on said PCB, the device comprising a substantially open frame member and a closing can or cover member, said frame member and said can or cover member being constructed from electrically conductive material and having peripheral sides that grip each other in a closing arrangement, said peripheral sides of said frame member and said can or cover member being shaped such that said members exert a continuous gripping force on each other to establish and maintain uninterrupted circumferential electrical contact between said frame member and said can or cover member at facing edges of said peripheral sides of said members, wherein said peripheral sides of one member comprise a bevelled step and said peripheral sides of said other member comprise a reslient portion such that said bevelled step and resilient portion engage each other thereby forcing said members in a closing arrangement.
Claim 2
Dependent Claim
167 words
A two-part electromagnetic radiation shielding device for mounting on a Printed Circuit Board (PCB) and surrounding an electric or electronic component requiring shielding and mounted on said PCB, the device comprising a substantially open frame member and a closing can or cover member, said frame member and said can or cover member being constructed from electrically conductive material and having peripheral sides that grip each other in a closing arrangement, said peripheral sides of said frame member and said can or cover member being shaped such that said members exert a continuous gripping force on each other to establish and maintain uninterrupted circumferential electrical contact between said frame member and said can or cover member at facing edges of said peripheral sides of said members, wherein said peripheral sides of one member comprise a bevelled step and said peripheral sides of said other member comprise a reslient portion such that said bevelled step and resilient portion engage each other thereby forcing said members in a closing arrangement.
Claim 3
Dependent Claim
27 words
A device according to claim 1 , wherein said reslient portion takes the form of a shallow V such that said V portion engages said bevelled step.
Claim 4
Dependent Claim
26 words
A device according to claim 1 , wherein said resilient portion is formed as spaced apart resilient fingers extending from said peripheral sides of said member.
Claim 5
Dependent Claim
120 words
An electromagnetic radiation shielding device, comprising: an electrically conductive frame for receiving an electrical component; an electrically conductive cover for covering said frame, at least one of said frame and said cover having at least one member for contacting a first location of the other of said frame and said cover, said frame and said cover being configured to contact each other at a second location different than said first location, said second location being along an entire circumferential edge of at least one of said frame and said cover, said member biasing said other of said frame and said cover toward said second location, wherein said cover includes a beveled step, and said beveled step defines said first location.
Claim 6
Dependent Claim
120 words
An electromagnetic radiation shielding device, comprising: an electrically conductive frame for receiving an electrical component; an electrically conductive cover for covering said frame, at least one of said frame and said cover having at least one member for contacting a first location of the other of said frame and said cover, said frame and said cover being configured to contact each other at a second location different than said first location, said second location being along an entire circumferential edge of at least one of said frame and said cover, said member biasing said other of said frame and said cover toward said second location, wherein said cover includes a beveled step, and said beveled step defines said first location.
Claim 7
Dependent Claim
23 words
A device according to claim 4 , wherein said frame includes a plurality of said members, each of said members defining a flange.
Claim 8
Dependent Claim
48 words
A device according to claim 4 , wherein said frame receives an electrical component, said cover covers said frame, said member contacts said first location, said frame and said cover contact each other at said second location, and said shielding device is mounted on a printed circuit board.
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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) | 2004-01-30 | 2004-07-31 | 2005-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-01-30 | 2008-07-31 | 2009-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-01-30 | 2012-07-31 | 2013-01-30 | $7700.00 | Window Closed / Lapsed |