US5091606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasket for sealing electromagnetic waves filled with a conductive material
Assignee: Bal Seal Engineering LLC
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Filing: 1991-02-11
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Granted: 1992-02-25
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Expires: 2011-02-11
Abstract
Abstract An electromagnetic shielding gasket assembly includes a coil spring for blocking the propagation of electromagnetic waves therepast, with the coil spring including a plurality of individual coils canted along a center line thereof. The plurality of individual coils are supported in an orientation for controlling the electromagnetic shielding effectiveness of the coil spring, and a formable conductive material, disposed on said plurality of individual coils, is provided for being formed by the plurality of coils upon loading thereof. The formed conductive material fills an aperture of the coil spring to further block the propagation of electromagnetic waves.
Inventors
- 👤 Peter J. Balsells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:49
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02; F16F1/04; F16F1/045; F16F3/00; F16F3/02; F16F3/04; F16F3/08; F16F3/10; F16F3/12; F16J; F16J15/00; F16J15/02; F16J15/021; F16J15/022; F16J15/024; F16J15/025; F16J15/06; F16J15/08; F16J15/0887; F16J15/0893; F16J15/16; F16J15/34; F16J15/3436; F16J15/344; H; H01; H01R; H01R13/00; H01R13/648; H01R13/658; H01R13/6581; H01R13/6582; H01R13/6583; H01R13/6584; H05; H05K; H05K9/00; H05K9/0007; H05K9/0015; H05K9/0016; H01R4/00; H01R4/28; H01R4/48
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
89 words
Electromagnetic shielding gasket assembly comprising: coil spring means for blocking the propagation of electromagnetic waves therepast, said coil spring means comprising a plurality of individual coils canted along a center line thereof; means for supporting the plurality of coils in an orientation for controlling the electromagnetic shielding effectiveness of the coil spring means; and formable conductive means, disposed on said plurality of individual coils, for filling an aperture of the coil spring means to further block the propagation of electromagnetic waves upon loading of the plurality of individual coils.
Claim 2
Dependent Claim
89 words
Electromagnetic shielding gasket assembly comprising: coil spring means for blocking the propagation of electromagnetic waves therepast, said coil spring means comprising a plurality of individual coils canted along a center line thereof; means for supporting the plurality of coils in an orientation for controlling the electromagnetic shielding effectiveness of the coil spring means; and formable conductive means, disposed on said plurality of individual coils, for filling an aperture of the coil spring means to further block the propagation of electromagnetic waves upon loading of the plurality of individual coils.
Claim 3
Dependent Claim
22 words
The electromagnetic shielding gasket assembly according to claim 1 wherein sufficient formable conductive means is present to provide a low pressure seal.
Claim 4
Dependent Claim
24 words
The electromagnetic shielding gasket assembly according to claim 1 wherein said individual coils are interconnected in a manner forming a continuous circular coil spring.
Claim 5
Dependent Claim
23 words
The electromagnetic shielding spring gasket assembly according to claim 1 wherein said formable conductive means comprises a nonconductive elastomer with conductive material therein.
Claim 6
Dependent Claim
19 words
The electromagnetic shielding spring gasket assembly according to claim 1 wherein said formable conductive means comprises a soft metal.
Claim 7
Dependent Claim
17 words
The electromagnetic shielding spring gasket assembly according to claim 1 wherein said formable conductive means comprises tin.
Claim 8
Dependent Claim
36 words
The electromagnetic shielding gasket assembly according to claim 3 wherein said individual coils are fabricated from wire having a diameter, d, selected to achieve a desired shielding effectiveness, said shielding effectiveness increasing with increasing wire diameter.
Claim 9
Dependent Claim
35 words
The electromagnetic shielding gasket assembly according to claim 7 wherein said individual coils are formed with a coil height, D, selected to achieve a desired shielding effectiveness, said shielding effectiveness decreasing with increasing D/d ratio.
Claim 10
Dependent Claim
83 words
The electromagnetic shielding gasket assembly according to claim 1 wherein said individual coils are interconnected in a manner forming a continuous circular coil spring having a turn angle greater than zero degrees (0°) and said means for supporting the plurality of individual coils includes groove means for increasing the turn angle of the continuous circular coil spring to control the aperture of the circular coil spring through which electromagnetic waves may propagate, thereby controlling the electromagnetic shielding effectiveness of the coil spring means.
Claim 11
Dependent Claim
35 words
The electromagnetic shielding gasket according to claim 9 wherein said individual coils are fabricated from wire having a diameter, d, selected to achieve a desired shielding effectiveness, said shielding effectiveness increasing with increasing wire diameter.
Claim 12
Dependent Claim
34 words
The electromagnetic shielding gasket according to claim 9 wherein said individual coils are formed with a coil height, D, selected to achieve a desired shielding effectiveness, said shielding effectiveness decreasing with increasing D/d ratio.
Claim 13
Dependent Claim
38 words
The electromagnetic shielding gasket according to claim 1 further comprising groove means for containing said coil spring means, and said means for supporting the plurality of coils includes means for causing said individual coils to abut one another.
Claim 14
Dependent Claim
24 words
The electromagnetic shielding gasket assembly according to claim 12 wherein said individual coils are interconnected in a manner forming a continuous circular coil spring.
Claim 15
Dependent Claim
36 words
The electromagnetic shielding gasket assembly according to claim 13 wherein said individual coils are fabricated from wire having a diameter, d, selected to achieve a desired shielding effectiveness, said shielding effectiveness decreasing with increasing wire diameter.
Claim 16
Dependent Claim
34 words
The electromagnetic shielding gasket according to claim 14 wherein said individual coils are formed with a coil height, D, selected to achieve a desired shielding effectiveness, said shielding effectiveness increasing with increasing D/d ratio.
Claim 17
Dependent Claim
22 words
The electromagnetic shielding gasket assembly according to claim 13 wherein said means for causing said individual coils to abut comprises a wedge.
Claim 18
Dependent Claim
20 words
The electromagnetic shielding gasket assembly according to claim 16 wherein said wedge is an integral part of said groove means.
Claim 19
Dependent Claim
23 words
The electromagnetic shielding gasket assembly according to claim 16 wherein said wedge is disposed within said groove means and is not fixed thereto.
Claim 20
Dependent Claim
118 words
Electromagnetic shielding gasket assembly comprising: coil spring means for blocking the propagation of electromagnetic waves therepast, said coil spring means comprising a plurality of individual coils canted along a center line thereof; means for supporting the plurality of individual coils in an orientation for controlling the electromagnetic shielding effectiveness of the coil spring means; means, cooperating with said last mentioned means, for loading the plurality of coils to control an aperture of the coil spring means through which electromagnetic waves can propagate; and formable conductive means, disposed on said plurality of individual coils, for filling an aperture of the coil spring means to further block the propagation of electromagnetic waves upon loading of the plurality of individual coils.
Claim 21
Dependent Claim
118 words
Electromagnetic shielding gasket assembly comprising: coil spring means for blocking the propagation of electromagnetic waves therepast, said coil spring means comprising a plurality of individual coils canted along a center line thereof; means for supporting the plurality of individual coils in an orientation for controlling the electromagnetic shielding effectiveness of the coil spring means; means, cooperating with said last mentioned means, for loading the plurality of coils to control an aperture of the coil spring means through which electromagnetic waves can propagate; and formable conductive means, disposed on said plurality of individual coils, for filling an aperture of the coil spring means to further block the propagation of electromagnetic waves upon loading of the plurality of individual coils.
Claim 22
Dependent Claim
22 words
The electromagnetic shielding gasket assembly according to claim 19 wherein said formable conductive means comprises a nonconductive elastomer with conductive material therein.
Claim 23
Dependent Claim
18 words
The electromagnetic shielding gasket assembly according to claim 19 wherein said formable conductive means comprises a soft metal.
Claim 24
Dependent Claim
16 words
The electromagnetic shield gasket assembly according to claim 19 wherein said formable conductive means comprises tin.
Claim 25
Dependent Claim
22 words
The electromagnetic shielding gasket assembly according to claim 19 wherein sufficient formable conductive means is present to provide a low pressure seal.
Claim 26
Dependent Claim
38 words
The electromagnetic shielding gasket assembly according to claim 23 wherein the formable conductive means is disposed between the plurality of individual coils and has an outside diameter less than an outside diameter of the plurality of individual coils.
Claim 27
Dependent Claim
121 words
Electromagnetic shielding gasket assembly comprising: coil spring means for blocking the propagation of electromagnetic waves therepast, said coil spring means comprising a plurality of coils canted along a center line thereof; means for supporting the plurality of coils in an orientation for controlling the electromagnetic shielding effectiveness of the coil spring means; and formable conductive elastic means, disposed around and between said plurality of individual coils and partially adhering thereto, for modifying a force exerted by the coil spring means in response to deflection thereof, said formable conductive elastic means being formed by said plurality of coils upon loading thereof, the formable conductive elastic means filling an aperture of the coil spring means to further block the propagation of electromagnetic waves.
Claim 28
Dependent Claim
121 words
Electromagnetic shielding gasket assembly comprising: coil spring means for blocking the propagation of electromagnetic waves therepast, said coil spring means comprising a plurality of coils canted along a center line thereof; means for supporting the plurality of coils in an orientation for controlling the electromagnetic shielding effectiveness of the coil spring means; and formable conductive elastic means, disposed around and between said plurality of individual coils and partially adhering thereto, for modifying a force exerted by the coil spring means in response to deflection thereof, said formable conductive elastic means being formed by said plurality of coils upon loading thereof, the formable conductive elastic means filling an aperture of the coil spring means to further block the propagation of electromagnetic waves.
Claim 29
Dependent Claim
121 words
Electromagnetic shielding gasket assembly comprising: coil spring means for blocking the propagation of electromagnetic waves therepast, said coil spring means comprising a plurality of coils canted along a center line thereof; means for supporting the plurality of coils in an orientation for controlling the electromagnetic shielding effectiveness of the coil spring means; and formable conductive elastic means, disposed around and between said plurality of individual coils, but not adhering thereto, for modifying a force exerted by the coil spring means in response to deflection thereof, said formable conductive elastic means being formed by said plurality of coils upon loading thereof, the formable conductive elastic means filling an aperture of the coil spring means to further block the propagation of electromagnetic waves.
Claim 30
Dependent Claim
121 words
Electromagnetic shielding gasket assembly comprising: coil spring means for blocking the propagation of electromagnetic waves therepast, said coil spring means comprising a plurality of coils canted along a center line thereof; means for supporting the plurality of coils in an orientation for controlling the electromagnetic shielding effectiveness of the coil spring means; and formable conductive elastic means, disposed around and between said plurality of individual coils, but not adhering thereto, for modifying a force exerted by the coil spring means in response to deflection thereof, said formable conductive elastic means being formed by said plurality of coils upon loading thereof, the formable conductive elastic means filling an aperture of the coil spring means to further block the propagation of electromagnetic waves.
Claim 31
Dependent Claim
22 words
The electromagnetic shielding gasket assembly according to claim 26 wherein sufficient formable conductive means is present to provide a low pressure seal.
Claim 32
Dependent Claim
38 words
The electromagnetic shielding gasket assembly according to claim 27 wherein the formable conductive means is disposed between the plurality of individual coils and has an outside diameter less than an outside diameter of the plurality of individual coils.
Claim 33
Dependent Claim
32 words
The spring assembly according to claim 25 or 26 wherein the coil spring means has an oval perimeter and said elastic means includes means for defining a circular hollow center portion thereof.
Claim 34
Dependent Claim
43 words
The spring assembly according to claim 25 or 26 wherein the coil spring means has an oval perimeter and said elastic means includes means for defining a plurality of hollow areas within the elastic material and inside of said plurality of coil means.
Claim 35
Dependent Claim
33 words
The spring assembly according to claim 25 or 26 wherein the coil spring means has an oval perimeter and said elastic means includes means for defining a generally rectilinear hollow center portion thereof.
Claim 36
Dependent Claim
24 words
The electromagnetic shielding gasket assembly according to claim 25 or 26 wherein said formable conductive means comprises a nonconductive elastomer with conductive fibers therein.
Claim 37
Dependent Claim
20 words
The electromagnetic shielding gasket assembly according to claim 25 or 26 wherein said formable conductive means comprises a soft metal.
References Cited (Backward Citations)
GB774419A
Cited
US4934666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-24 | 1995-08-26 | 1996-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-24 | 1999-08-26 | 2000-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-24 | 2003-08-26 | 2004-02-25 | $7700.00 | Window Closed / Lapsed |