US4890199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Miniature shield with opposing cantilever spring fingers
Assignee: Motorola Solutions Inc
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Filing: 1988-11-04
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Granted: 1989-12-26
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Expires: 2008-11-04
Abstract
Abstract A miniature shield with opposing cantilever spring fingers is disclosed. Shield walls, which may be part of a housing for electronic equipment, are designed to insert between a plurality of opposing cantilever spring fingers arranged in a "U"-shaped channel. Torque generated at the bottom of the "U"-shaped channel is minimized by the opposing cantilever spring fingers and enables the channel to be reflow soldered to an electronic circuit board.
Inventors
- 👤 Scott D. Beutler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:39
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0007; H05K9/002; H05K9/0022; H05K9/0024; H05K9/0032; H04; H04M; H04M1/00; H04M1/02; H04M1/0202; H05K9/0035; Y; Y10; Y10S; Y10S174/00; Y10S174/34
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
192 words
An electromagnetic shield apparatus for miniature electronic circuitry on a substrate which is at least partially surrounded by a housing, comprising: an essentially "U"-shaped conductive channel further comprising: a plurality of pairs of opposing cantilever spring fingers attached to an elongated planar common base, a first spring finger of said plurality of pairs of opposing cantilever spring fingers extending away from the plane of said base at a first obtuse angle and an opposing second spring finger of said plurality of pairs of opposing cantilever spring fingers extending away from the plane of said base at a second obtuse angle, such that said first and said opposing second spring fingers approach each other, each said first and said opposing second of said pair of spring fingers further having an end portion extending in a direction away from said opposing second and said first spring finger respectively; a conductive area on the substrate connected to the electronic circuitry and to which said "U"-shaped conductive channel is electrically coupled; and a shield portion comprising a raised conductive segment of the housing which is disposed at least between said first and opposing second spring fingers.
Claim 2
Dependent Claim
192 words
An electromagnetic shield apparatus for miniature electronic circuitry on a substrate which is at least partially surrounded by a housing, comprising: an essentially "U"-shaped conductive channel further comprising: a plurality of pairs of opposing cantilever spring fingers attached to an elongated planar common base, a first spring finger of said plurality of pairs of opposing cantilever spring fingers extending away from the plane of said base at a first obtuse angle and an opposing second spring finger of said plurality of pairs of opposing cantilever spring fingers extending away from the plane of said base at a second obtuse angle, such that said first and said opposing second spring fingers approach each other, each said first and said opposing second of said pair of spring fingers further having an end portion extending in a direction away from said opposing second and said first spring finger respectively; a conductive area on the substrate connected to the electronic circuitry and to which said "U"-shaped conductive channel is electrically coupled; and a shield portion comprising a raised conductive segment of the housing which is disposed at least between said first and opposing second spring fingers.
Claim 3
Dependent Claim
37 words
An electromagnetic shield apparatus in accordance with claim 1 wherein said first and said opposing second spring fingers extend in a direction away from each other at an acute angle relative to said plane of said base.
Claim 4
Dependent Claim
19 words
An electromagnetic shield apparatus in accordance with claim 1 wherein said conductive area further comprises a reflow solder surface.
Claim 5
Dependent Claim
221 words
A portable radiotelephone having a housing with a conductive material covering at least a portion of the inside surface of the housing and having electronic circuitry substantially enclosed in the housing, comprising: a substrate with the circuitry thereon disposed within the housing: an essentially "U"-shaped conductive channel further comprising: a plurality of pairs of opposing cantilever spring fingers attached to an elongated planar common base, a first spring finger of said plurality of pairs of opposing cantilever spring fingers extending away from the plane of said base at a first obtuse angle and an opposing second spring finger of said plurality of pairs of opposing cantilever spring fingers extending away from the plane of said base at a second obtuse angle, such that said first and said opposing second spring fingers approach each other, each said first and said opposing second of said pairs of spring fingers further having an end portion extending in a direction away from said opposing second and said first spring finger respectively; a raised conductive wall portion disposed on the inside surface of the housing and further disposed between each said first and said opposing second of said pairs of spring fingers; and a conductive area disposed on said substrate essentially opposite said raised conductive wall and to which said "U"-shaped conductive channel is electrically connected.
Claim 6
Dependent Claim
221 words
A portable radiotelephone having a housing with a conductive material covering at least a portion of the inside surface of the housing and having electronic circuitry substantially enclosed in the housing, comprising: a substrate with the circuitry thereon disposed within the housing: an essentially "U"-shaped conductive channel further comprising: a plurality of pairs of opposing cantilever spring fingers attached to an elongated planar common base, a first spring finger of said plurality of pairs of opposing cantilever spring fingers extending away from the plane of said base at a first obtuse angle and an opposing second spring finger of said plurality of pairs of opposing cantilever spring fingers extending away from the plane of said base at a second obtuse angle, such that said first and said opposing second spring fingers approach each other, each said first and said opposing second of said pairs of spring fingers further having an end portion extending in a direction away from said opposing second and said first spring finger respectively; a raised conductive wall portion disposed on the inside surface of the housing and further disposed between each said first and said opposing second of said pairs of spring fingers; and a conductive area disposed on said substrate essentially opposite said raised conductive wall and to which said "U"-shaped conductive channel is electrically connected.
Claim 7
Dependent Claim
41 words
A portable radiotelephone in accordance with claim 4 wherein each said first and said opposing second of said pairs of spring fingers extend in a direction away from each other at an acute angle relative to said plane of said base.
Claim 8
Dependent Claim
20 words
A portable radiotelephone in accordance with claim 4 wherein said "U"-shaped conductive channel is reflow soldered to said conductive area.
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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) | 1992-12-25 | 1993-06-26 | 1993-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-25 | 1997-06-26 | 1997-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-25 | 2001-06-26 | 2001-12-26 | $7700.00 | Window Closed / Lapsed |