US5095177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rf sealed radio housing
Assignee: Nokia Mobile Phones UK Ltd
•
Filing: 1990-09-20
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Granted: 1992-03-10
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Expires: 2010-09-20
Abstract
Abstract A two-piece transceiver housing for a mobile telephone comprises an open-topped box and a separate lid both made of conductive material, specifically diecast aluminium. A plurality of flat projections are formed integrally on the underside of the lid. These projections are arranged to bear internally against the side wall of the box when the lid is in place to prevent radio frequency radiation escaping from the housing without the need for a separate sealing component. The projections have a tapering curvilinear or rectilinear profile. This helps to distribute the stress and enables the projections to suffer slight deflection without breaking even when they are made of cast aluminium which is relatively brittle.
Inventors
- 👤 Martin L. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:36
CPC Classifications
H; H04; H04B; H04B15/00; H04B15/02; H04B1/00; H04B1/02; H04B1/03; H04B1/034
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
76 words
A housing for electronic circuitry, comprising an open-topped box having bottom and side walls made of electrically conductive material, and a separate electrically conductive lid for closing the box, wherein a plurality of projections depend from the lid and are integral therewith, the width of said projections gradually decreasing away from the lid, which projections are arranged to bear internally against the side walls of the box to prevent radio frequency radiation escaping from the housing.
Claim 2
Dependent Claim
76 words
A housing for electronic circuitry, comprising an open-topped box having bottom and side walls made of electrically conductive material, and a separate electrically conductive lid for closing the box, wherein a plurality of projections depend from the lid and are integral therewith, the width of said projections gradually decreasing away from the lid, which projections are arranged to bear internally against the side walls of the box to prevent radio frequency radiation escaping from the housing.
Claim 3
Dependent Claim
27 words
A housing for electronic circuitry as claimed in claim 1 wherein the projections are substantially flat in the plane of the side wall against which they bear.
Claim 4
Dependent Claim
22 words
A housing for electronic circuitry as claimed in claim 2 wherein the lid and the box are made of the same material.
Claim 5
Dependent Claim
17 words
A housing for electronic circuitry as claimed in claim 3, wherein the lid is manufactured by diecasting.
Claim 6
Dependent Claim
15 words
A housing for electronic circuitry as claimed in claim 4, wherein the lid comprises aluminium.
Claim 7
Dependent Claim
22 words
A housing for electronic circuitry as claimed in claim 1, wherein the projections extend from a common ridge integral with the lid.
Claim 8
Dependent Claim
19 words
A housing for electronic circuitry as claimed in claim 1, wherein the projections depend substantially orthorgonally to the lid.
Claim 9
Dependent Claim
17 words
A housing for electronic circuitry as claimed in claim 1, wherein neighbouring projections are in adjoining relationship.
Claim 10
Dependent Claim
22 words
A housing for electronic circuitry as claimed in claim 1, wherein the projections extend around substantially the whole periphery of the lid.
Claim 11
Dependent Claim
20 words
A housing for electronic circuitry as claimed in claim 1, wherein the projections are arranged in a generally tooth-like configuration.
Claim 12
Dependent Claim
41 words
A housing for electronic circuitry as claimed in claim 1, wherein the side wall of the box comprises a plurality of ribs on the internal face thereof, which ribs are arranged to engage and deflect a respective projection on the lid.
Claim 13
Dependent Claim
51 words
A housing for electronic circuitry as claimed in claim 11 wherein each rib is provided with a chamfered portion at the end facing the open top of the box, which chamfered portion is arranged to engage the leading edge of the associated projection when the lid is placed on the box.
Claim 14
Dependent Claim
90 words
A housing for electronic circuitry, comprising an open-topped box having bottom and side walls made of electrically conductive material, and a separate electrically conductive lid for closing the box, wherein a plurality of projections depend substantially orthorgonally to the lid, the width of said projections gradually decreasing away from the lid, which projections are arranged to bear internally against the side walls of the box to prevent radio frequency radiation escaping from the housing, said projections being substantially flat in the plane of the side wall against which they bear.
Claim 15
Dependent Claim
90 words
A housing for electronic circuitry, comprising an open-topped box having bottom and side walls made of electrically conductive material, and a separate electrically conductive lid for closing the box, wherein a plurality of projections depend substantially orthorgonally to the lid, the width of said projections gradually decreasing away from the lid, which projections are arranged to bear internally against the side walls of the box to prevent radio frequency radiation escaping from the housing, said projections being substantially flat in the plane of the side wall against which they bear.
Claim 16
Dependent Claim
17 words
A housing for electronic circuitry as claimed in claim 13, wherein neighbouring projections are in adjoining relationships.
Claim 17
Dependent Claim
22 words
A housing for electronic circuitry as claimed in claim 14, wherein the projections extend around substantially the whole periphery of the lid.
Claim 18
Dependent Claim
17 words
A housing as claimed in claim 15, wherein the projections are arranged in a generally tooth-like configuration.
Claim 19
Dependent Claim
19 words
A housing as claimed in claim 16, wherein the projections extend from a common ridge integral with the lid.
Claim 20
Dependent Claim
41 words
A housing for electronic circuitry as claimed in claim 13, wherein the side wall of the box comprises a plurality of ribs on the internal face thereof, which ribs are arranged to engage and deflect a respective projection on the lid.
Claim 21
Dependent Claim
51 words
A housing for electronic circuitry as claimed in claim 18 wherein each rib is provided with a chamfered portion at the end facing the open top of the box, which chamfered portion is arranged to engage the leading edge of the associated projection when the lid is placed on the box.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-10 | 1995-09-09 | 1996-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-10 | 1999-09-09 | 2000-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-10 | 2003-09-09 | 2004-03-10 | $7700.00 | Window Closed / Lapsed |