Patent US4572921A successfully refreshed from Google Patents.
US4572921A
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Electromagnetic shielding device
Assignee: Laird Technologies Inc
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Filing: 1984-07-30
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Granted: 1986-02-25
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Expires: 2004-07-30
Abstract
Abstract An electromagnetic shielding device includes a continuous metallic strip having a plurality of fingers defining spaces therebetween, and a base portion including a plurality of segments which are arranged so as to securely mount the shielding device in a channel having a linear or irregular configuration.
Inventors
- 👤 James P. May
- 👤 Arthur R. Eppler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:17
CPC Classifications
G; G12; G12B; G12B17/00; G12B17/02; H; H05; H05K; H05K9/00; H05K9/0007; H05K9/0015; H05K9/0016
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
80 words
An electromagnetic shielding device comprising a continuous metallic strip defining a plurality of fingers and a base portion, each of the fingers extending over the base portion and being joined at one end to the base portion in a curved configuration and having a free end which extends in an inwardly curved configuration toward the base portion, said base portion defining a plurality of individual segments each having a free end with adjacent segments being connected by an associated finger.
Claim 2
Dependent Claim
80 words
An electromagnetic shielding device comprising a continuous metallic strip defining a plurality of fingers and a base portion, each of the fingers extending over the base portion and being joined at one end to the base portion in a curved configuration and having a free end which extends in an inwardly curved configuration toward the base portion, said base portion defining a plurality of individual segments each having a free end with adjacent segments being connected by an associated finger.
Claim 3
Dependent Claim
46 words
The electromagnetic shielding device of claim 1, wherein each of said segments of the base portion has a flat bottom portion and a flat free end portion, the flat bottom portion and the flat free end portion being oriented at an obtuse angle to one another.
Claim 4
Dependent Claim
25 words
The electromagnetic shielding device of claim 2, wherein the flat free end portion of each segment of the base portion has a straight free edge.
Claim 5
Dependent Claim
22 words
The electromagnetic shielding device of claim 1, wherein each of the fingers is connected to two adjacent segments of the base portion.
Claim 6
Dependent Claim
27 words
The electromagnetic shielding device of claim 4, wherein each pair of adjacent fingers defines a space therebetween having generally parallel sidewalls when the device is generally linear.
Claim 7
Dependent Claim
31 words
The electromagnetic shielding device of claim 5 wherein each pair of adjacent segments of the base portion defines a space therebetween having generally parallel sidewalls when the device is generally linear.
Claim 8
Dependent Claim
31 words
The electromagnetic shielding device of claim 6, wherein each space defined by a pair of adjacent fingers is arranged between spaces defined by adjacent pairs of segments of said base portion.
Claim 9
Dependent Claim
16 words
The electromagnetic shielding device of claim 7, wherein the continuous metallic strip is of beryllium copper.
Claim 10
Dependent Claim
22 words
The electromagnetic shielding device of claim 8, wherein each space defined by a pair of adjacent fingers extends into an associated segment.
Claim 11
Dependent Claim
22 words
The electromagnetic shielding device of claim 9, wherein each space defined by a pair of adjacent segments extends into an associated finger.
Claim 12
Dependent Claim
16 words
The electromagnetic shielding device of claim 5, wherein the continuous metallic strip is of beryllium copper.
Claim 13
Dependent Claim
16 words
The electromagnetic shielding device of claim 1, wherein the continuous metallic strip is of beryllium copper.
Claim 14
Dependent Claim
91 words
An electromagnetic shielding device system, comprising: a member to be shielded having at least one support surface; and an electromagnetic shielding device comprising a continuous metallic strip defining a plurality of fingers and a base portion, each of the fingers being joined at one end to the base portion and having a free end which extends in a curved configuration over the base portion, said base portion defining a plurality of segments each having a free end and having an outer surface in engagement with said support surface of said member.
Claim 15
Dependent Claim
91 words
An electromagnetic shielding device system, comprising: a member to be shielded having at least one support surface; and an electromagnetic shielding device comprising a continuous metallic strip defining a plurality of fingers and a base portion, each of the fingers being joined at one end to the base portion and having a free end which extends in a curved configuration over the base portion, said base portion defining a plurality of segments each having a free end and having an outer surface in engagement with said support surface of said member.
Claim 16
Dependent Claim
47 words
The electromagnetic shielding device system of claim 13, wherein each of said segments of the base portion has a flat bottom portion and a flat free end portion, the flat bottom portion and the flat free end portion being oriented at an obtuse angle to one another.
Claim 17
Dependent Claim
26 words
The electromagnetic shielding device system of claim 14, wherein the flat free end portion of each segment of the base portion has a straight free edge.
Claim 18
Dependent Claim
27 words
The electromagnetic shielding device system of claim 15, wherein the support surface includes a channel with the base portion of the strip resiliently received within the channel.
Claim 19
Dependent Claim
23 words
The electromagnetic shielding device system of claim 13, wherein each of the fingers is connected to two adjacent segments of the base portion.
Claim 20
Dependent Claim
28 words
The electromagnetic shielding device system of claim 17, wherein each pair of adjacent fingers defines a space therebetween having generally parallel sidewalls when the device is generally linear.
Claim 21
Dependent Claim
32 words
The electromagnetic shielding device system of claim 18, wherein each pair of adjacent segments of the base portion defines a space therebetween having generally parallel sidewalls when the device is generally linear.
Claim 22
Dependent Claim
17 words
The electromagnetic shielding device system of claim 19, wherein the continuous metallic strip is of beryllium copper.
Claim 23
Dependent Claim
17 words
The electromagnetic shielding device system of claim 13, wherein the continuous metallic strip is of beryllium copper.
Claim 24
Dependent Claim
94 words
An electromagnetic shielding device comprising a continuous metallic strip defining a plurality of fingers and a base portion, each of the fingers being joined at one end to the base portion and having a free end which extends in a curved configuration over the base portion, said base portion defining a Plurality of segments each having a flat bottom portion and a flat free end portion, the flat bottom portion and the flat free end portion being oriented at an obtuse angle to one another, said flat free end portion extending toward said fingers.
Claim 25
Dependent Claim
94 words
An electromagnetic shielding device comprising a continuous metallic strip defining a plurality of fingers and a base portion, each of the fingers being joined at one end to the base portion and having a free end which extends in a curved configuration over the base portion, said base portion defining a Plurality of segments each having a flat bottom portion and a flat free end portion, the flat bottom portion and the flat free end portion being oriented at an obtuse angle to one another, said flat free end portion extending toward said fingers.
Claim 26
Dependent Claim
25 words
The electromagnetic shielding device of claim 22, wherein the flat free end portion of each segment of the base portion has a straight free edge.
Claim 27
Dependent Claim
22 words
The electromagnetic shielding device of claim 22, wherein each of the fingers is connected to two adjacent segments of the base portion.
Claim 28
Dependent Claim
27 words
The electromagnetic shielding device of claim 24, wherein each pair of adjacent fingers defines a space therebetween having generally parallel sidewalls when the device is generally linear.
Claim 29
Dependent Claim
31 words
The electromagnetic shielding device of claim 25, wherein each pair of adjacent segments of the base portion defines a space therebetween having generally parallel sidewalls when the device is generally linear.
Claim 30
Dependent Claim
16 words
The electromagnetic shielding device of claim 25, wherein the continuous metallic strip is of beryllium copper.
Claim 31
Dependent Claim
16 words
The electromagnetic shielding device of claim 22, wherein the continuous metallic strip is of beryllium copper.
References Cited (Backward Citations)
US2825042A
Cited
US2844644A
Cited
US3277230A
Cited
US3504095A
Cited
GB1179975A
Cited
US3904810A
Cited
US4115655A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-02-24 | 1989-08-26 | 1990-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-24 | 1993-08-26 | 1994-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-24 | 1997-08-26 | 1998-02-25 | $7700.00 | Window Closed / Lapsed |