Patent CA1209635A successfully refreshed from Google Patents.
US5483423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
EMI shielding for components
Assignee: Hewlett Packard Development Co LP
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Filing: 1995-01-09
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Granted: 1996-01-09
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Expires: 2015-01-09
Abstract
Abstract This disclosure pertains to an apparatus and method of providing EMI shielding for an electrical component. The apparatus includes an elastomeric gasket, which is coated with a conductive jacket, and which is mounted on the backplane of a cabinet, the backplane providing EMI shielding. The cabinet is adapted for the insertion of a plurality of electrical components, such as disk drives, tape drives, and power supplies, which themselves are mounted in a rigid frame member. The frame member includes EMI shielding for the components on five of their six sides. The sixth side is unshielded, due to the fact that it contains the electrical connector used to connect the component to the backplane of the cabinet, when the frame member is inserted in the cabinet. With the frame member providing shielding on five sides, and the backplane providing shielding for the sixth side, the gasket serves the purpose of establishing an electrical seal between the frame member and the backplane of the cabinet.
Inventors
- 👤 Mark S. Lewis
- 👤 Reuben M. Martinez
- 👤 Ralph M. Tusler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:57
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0062; G; G06; G06F; G06F1/00; G06F1/16; G06F1/18; G06F1/181; G06F1/182
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
120 words
Apparatus for shielding an electrical component comprising: a container for holding the electrical component, the container being shielded against EMI emissions on all sides except one the unshielded side having an electrically conductive edge which defines a geometric shape; a cabinet for holding the container, the cabinet including a wall constructed to shield EMI emissions; and a gasket on the interior surface of the wall, the gasket having an elastomeric core and an electrically conductive outer surface, the gasket being in the given geometric shape such that with the electrically conductive edge of the unshielded side of the container in pressed contact with the outer surface of the gasket an electrical connection is established between the edge and the gasket.
Claim 2
Dependent Claim
120 words
Apparatus for shielding an electrical component comprising: a container for holding the electrical component, the container being shielded against EMI emissions on all sides except one the unshielded side having an electrically conductive edge which defines a geometric shape; a cabinet for holding the container, the cabinet including a wall constructed to shield EMI emissions; and a gasket on the interior surface of the wall, the gasket having an elastomeric core and an electrically conductive outer surface, the gasket being in the given geometric shape such that with the electrically conductive edge of the unshielded side of the container in pressed contact with the outer surface of the gasket an electrical connection is established between the edge and the gasket.
Claim 3
Dependent Claim
14 words
The apparatus as in claim 1, wherein said core is an electrically insulative material.
Claim 4
Dependent Claim
13 words
The apparatus as in claim 2, wherein said insulative material is foam rubber.
Claim 5
Dependent Claim
14 words
The apparatus as in claim 2, wherein said gasket surface includes a conductive mesh.
Claim 6
Dependent Claim
30 words
The apparatus as in claim 1, wherein the container for holding the electrical component includes a plating of electrically conductive material which is electrically coupled to the electrically conductive edge.
Claim 7
Dependent Claim
15 words
The apparatus as in claim 5, wherein said conductive plating comprises a shield against EMI.
Claim 8
Dependent Claim
170 words
Apparatus for EMI shielding an electrical component comprising: a cabinet including a backplane constructed to shield EMI emissions and having an opening on one side thereof; a container for holding an electrical component, the container including a side having a component connector, the container being effective to shield an electrical component held therein from EMI emissions on all sides except the side with the component connector, the unshielded side of the container having an exteriorly exposed closed narrow electrically conductive surface extending around the outer boundary region of such side, the container having a shape and dimensions for insertion in the cabinet through the opening; and a resilient electrically conductive surface on the interior of the backplane conforming in shape and size to the exteriorly exposed electrically conductive surface, the electrically conductive surface being positioned on the backplane so that when the container is in position in the cabinet such resilient electrically conductive surface engages the conductive surface on the unshielded side of the container to form electrical contact therewith.
Claim 9
Dependent Claim
170 words
Apparatus for EMI shielding an electrical component comprising: a cabinet including a backplane constructed to shield EMI emissions and having an opening on one side thereof; a container for holding an electrical component, the container including a side having a component connector, the container being effective to shield an electrical component held therein from EMI emissions on all sides except the side with the component connector, the unshielded side of the container having an exteriorly exposed closed narrow electrically conductive surface extending around the outer boundary region of such side, the container having a shape and dimensions for insertion in the cabinet through the opening; and a resilient electrically conductive surface on the interior of the backplane conforming in shape and size to the exteriorly exposed electrically conductive surface, the electrically conductive surface being positioned on the backplane so that when the container is in position in the cabinet such resilient electrically conductive surface engages the conductive surface on the unshielded side of the container to form electrical contact therewith.
Claim 10
Dependent Claim
26 words
The apparatus of claim 7 wherein the electrically conductive surface on the interior of the backplane is formed by a conductive outer cover of a gasket.
Claim 11
Dependent Claim
15 words
The apparatus as in claim 8, wherein the gasket includes an electrically insulated elastomeric core.
Claim 12
Dependent Claim
14 words
The apparatus as in claim 9, wherein said core is made of foam rubber.
Claim 13
Dependent Claim
16 words
The apparatus as in claim 9, wherein said gasket includes a conductive mesh over said core.
Claim 14
Dependent Claim
30 words
The apparatus of claim 7 wherein the interior surfaces of the container on all sides are formed of an electrically conductive metallic material except the side with the component connector.
Claim 15
Dependent Claim
12 words
The apparatus of claim 12 wherein the container is formed of plastic.
Claim 16
Independent Claim
92 words
A method of shielding an electrical component comprising the steps of: inserting a frame member which houses an electrical component into a cabinet, the frame member having a plurality of sides, one of which is unshielded against the emission of EMI, said unshielded side having an opening defined by an electrically conductive edge in a given geometric shape; and compressively engaging a sealing gasket with the edge, the sealing gasket having an elastomeric core with a conductive surface and being mounted in the cabinet in the same geometric shape as the edge.
Claim 17
Independent Claim
92 words
A method of shielding an electrical component comprising the steps of: inserting a frame member which houses an electrical component into a cabinet, the frame member having a plurality of sides, one of which is unshielded against the emission of EMI, said unshielded side having an opening defined by an electrically conductive edge in a given geometric shape; and compressively engaging a sealing gasket with the edge, the sealing gasket having an elastomeric core with a conductive surface and being mounted in the cabinet in the same geometric shape as the edge.
Claim 18
Dependent Claim
213 words
Apparatus for EMI shielding an electrical component comprising: a cabinet including a backplane constructed to shield EMI emissions and having an opening on one side thereof; a plastic container for holding an electrical component, the container including side, top, bottom, back walls, and a front cover, the interior of the side, top, and bottom walls and the front cover being coated with a metallic layer effective to shield against EMI emissions, the back wall having a component connector, the unshielded back wall of the container having an exteriorly exposed closed narrow electrically conductive surface extending around the outer boundary region of such back wall, the container having a shape and dimensions for insertion in the cabinet through the opening; and a resilient electrically conductive surface on the interior of the backplane conforming in shape and size to the exteriorly exposed electrically conductive surface, the electrically conductive surface on the interior of the backplane is formed by a conductive outer cover of a gasket, the gasket includes an electrically insulated elastomeric core, the electrically conductive surface being positioned on the backplane so that when the container is in position in the cabinet such resilient electrically conductive surface engages the conductive surface on the unshielded back wall of the container to form electrical contact therewith.
Claim 19
Dependent Claim
213 words
Apparatus for EMI shielding an electrical component comprising: a cabinet including a backplane constructed to shield EMI emissions and having an opening on one side thereof; a plastic container for holding an electrical component, the container including side, top, bottom, back walls, and a front cover, the interior of the side, top, and bottom walls and the front cover being coated with a metallic layer effective to shield against EMI emissions, the back wall having a component connector, the unshielded back wall of the container having an exteriorly exposed closed narrow electrically conductive surface extending around the outer boundary region of such back wall, the container having a shape and dimensions for insertion in the cabinet through the opening; and a resilient electrically conductive surface on the interior of the backplane conforming in shape and size to the exteriorly exposed electrically conductive surface, the electrically conductive surface on the interior of the backplane is formed by a conductive outer cover of a gasket, the gasket includes an electrically insulated elastomeric core, the electrically conductive surface being positioned on the backplane so that when the container is in position in the cabinet such resilient electrically conductive surface engages the conductive surface on the unshielded back wall of the container to form electrical contact therewith.
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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) | 1999-01-08 | 1999-07-10 | 2000-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-08 | 2003-07-10 | 2004-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-08 | 2007-07-10 | 2008-01-09 | $7700.00 | Window Closed / Lapsed |