US5422433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio frequency isolation shield having reclosable opening
Assignee: Motorola Solutions Inc
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Filing: 1993-11-15
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Granted: 1995-06-06
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Expires: 2013-11-15
Abstract
Abstract A shielding enclosure (10) shields an electronic circuit (12) from radio frequency interference (RFI) or electromagnetic interferences (EMI). The shielding enclosure is an electrically conductive polyhedron having at least one aperture (18). The enclosure has a closable member (20), which is a part of the polyhedron, arranged to enable the aperture to be opened and closed. The polyhedron can be an electrically conductive metal enclosure that covers the shielded circuit, and is mechanically and electrically attached to the circuit. The aperture has an integral flap (21) connected to the enclosure at one end (23), so that it is able to be opened and closed to reveal the shielded circuit. Any openings remaining in the polyhedron when the aperture is closed are less than or equal to 1/4 wavelength of the interfering radio frequency energy.
Inventors
- 👤 Ruben Rivera
- 👤 Timothy J. Dinwiddie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:24
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0007; H05K9/002; H05K9/0022; H05K9/0024; H05K9/0026
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
104 words
An electronic circuit shielded from radio frequency interference or electromagnetic interferences, comprising: a circuit carrying substrate; an electronic circuit on the substrate, having a plurality of components; an electrically conductive polyhedron covering at least a portion of the electronic circuit and said components, and mechanically attached to the circuit carrying substrate and electrically attached to the electronic circuit, the polyhedron having at least one aperture arranged to reveal only a portion of the plurality of components; and the electrically conductive polyhedron having a closable member arranged to enable the aperture to be opened and closed, the closable member being a part of the polyhedron.
Claim 2
Dependent Claim
104 words
An electronic circuit shielded from radio frequency interference or electromagnetic interferences, comprising: a circuit carrying substrate; an electronic circuit on the substrate, having a plurality of components; an electrically conductive polyhedron covering at least a portion of the electronic circuit and said components, and mechanically attached to the circuit carrying substrate and electrically attached to the electronic circuit, the polyhedron having at least one aperture arranged to reveal only a portion of the plurality of components; and the electrically conductive polyhedron having a closable member arranged to enable the aperture to be opened and closed, the closable member being a part of the polyhedron.
Claim 3
Dependent Claim
15 words
The electronic circuit as described in claim 1, wherein the closable member is a shutter.
Claim 4
Dependent Claim
16 words
The electronic circuit as described in claim 1, wherein the closable member is a sliding member.
Claim 5
Dependent Claim
33 words
The electronic circuit as described in claim 1, wherein the closable member is arranged so as to permit the electronic circuit to be adjusted and remain electrically shielded when the aperture is open.
Claim 6
Dependent Claim
23 words
The electronic circuit as described in claim 1, wherein the closable member is a flap that is an integral part of the polyhedron.
Claim 7
Dependent Claim
37 words
The electronic circuit as described in claim 1, wherein any openings remaining in the electrically conductive metal enclosure when the closable member is closed are less than or equal to 1/4 wavelength of said radio frequency interference.
Claim 8
Dependent Claim
106 words
An electronic circuit shielded from radio frequency interference or electromagnetic interference, comprising: a circuit carrying substrate; an electronic circuit on the substrate, having a plurality of components; an electrically conductive metal enclosure covering at least a portion of the electronic circuit and mechanically attached to the circuit carrying substrate and electrically attached to the electronic circuit, the enclosure having at least one side; and an opening in the metal enclosure, the opening comprising an integral flap connected to the metal enclosure at one end, and arranged to be operably opened and closed to reveal only a portion of the electronic circuit covered by the metal enclosure.
Claim 9
Dependent Claim
106 words
An electronic circuit shielded from radio frequency interference or electromagnetic interference, comprising: a circuit carrying substrate; an electronic circuit on the substrate, having a plurality of components; an electrically conductive metal enclosure covering at least a portion of the electronic circuit and mechanically attached to the circuit carrying substrate and electrically attached to the electronic circuit, the enclosure having at least one side; and an opening in the metal enclosure, the opening comprising an integral flap connected to the metal enclosure at one end, and arranged to be operably opened and closed to reveal only a portion of the electronic circuit covered by the metal enclosure.
Claim 10
Dependent Claim
17 words
The electronic circuit as described in claim 7, wherein the electrically conductive metal enclosure is a hemisphere.
Claim 11
Dependent Claim
37 words
The electronic circuit as described in claim 7, wherein any openings remaining in the electrically conductive metal enclosure when the integral flap is dosed are less than or equal to 1/4 wavelength of said radio frequency interference.
Claim 12
Dependent Claim
32 words
The electronic circuit as described in claim 7, wherein the opening is arranged so as to permit the electronic circuit to be adjusted and remain electrically shielded when the aperture is open.
Claim 13
Dependent Claim
94 words
A radio, comprising a receiver, said receiver having a receive circuit shielded from radio frequency interference or electromagnetic interference, comprising: a circuit carrying substrate having said receive circuit on the substrate, said circuit having at least one component; an electrically conductive metal enclosure covering only said receive circuit and mechanically attached to the circuit carrying substrate and electrically attached to said receive circuit; an opening in the metal enclosure, the opening comprising a closable member arranged to enable the opening to be opened and closed to reveal only a portion of the receive circuit.
Claim 14
Dependent Claim
94 words
A radio, comprising a receiver, said receiver having a receive circuit shielded from radio frequency interference or electromagnetic interference, comprising: a circuit carrying substrate having said receive circuit on the substrate, said circuit having at least one component; an electrically conductive metal enclosure covering only said receive circuit and mechanically attached to the circuit carrying substrate and electrically attached to said receive circuit; an opening in the metal enclosure, the opening comprising a closable member arranged to enable the opening to be opened and closed to reveal only a portion of the receive circuit.
Claim 15
Dependent Claim
35 words
The radio as described in claim 11, wherein the opening in the metal enclosure is arranged so as to permit the receive circuit to be adjusted and remain electrically shielded when the opening is open.
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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) | 1998-06-05 | 1998-12-05 | 1999-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-06-05 | 2002-12-05 | 2003-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-06-05 | 2006-12-05 | 2007-06-06 | $7700.00 | Window Closed / Lapsed |