Patent US4966637A successfully refreshed from Google Patents.
US4966637A
Expired / Lapsed
US
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Method for manufacturing an electromagnetic shielding gasket
Assignee: MacDermid Graphics Solutions Europe SAS
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Filing: 1989-01-10
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Granted: 1990-10-30
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Expires: 2009-01-10
Abstract
Abstract The present invention relates to a process of forming an electromagnetic shielding gasket by forming a core of elastomeric material, coating the core with bands of an electrically conductive textile material, passing the coating core through a die to calibrate the coated core, heating the coated core to cure the elastomeric material and winding up the cured core.
Inventors
- 👤 Claude F. Laborie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:17
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0007; H05K9/0015; B; B29; B29C; B29C55/00; B29C55/30; B29C63/00; B29C63/18; B29C70/00; B29C70/68; B29C70/82; B29K; B29K2313/00; B29K2995/00; B29K2995/0003; B29K2995/0005; B29L; B29L2031/00; B29L2031/30; B29L2031/3055; B29L2031/3061; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49204; Y10T29/49208; Y10T29/4921; Y10T29/49211; Y10T29/4922
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
72 words
A method for manufacturing an electromagnetic shielding gasket comprising forming a core of an elastomeric material, coating the core with at least one electrically conductive band of a conductive textile material so as to surround the core with the material and calibrating the coated core by passing it through at least one die which also causes the band of textile material to be in contact with the elastomeric material of the core.
Claim 2
Independent Claim
72 words
A method for manufacturing an electromagnetic shielding gasket comprising forming a core of an elastomeric material, coating the core with at least one electrically conductive band of a conductive textile material so as to surround the core with the material and calibrating the coated core by passing it through at least one die which also causes the band of textile material to be in contact with the elastomeric material of the core.
Claim 3
Dependent Claim
18 words
The method according to claim 1, wherein a heating of the coated core is effected after the calibration.
Claim 4
Dependent Claim
20 words
The method according to claim 1 wherein the coated core is shaped into an appropriately shaped gasket after the calibration.
Claim 5
Dependent Claim
24 words
The method according to claim 1 wherein the core formation, coating and calibration steps are obtained by co-extruding the core and the conductive bands.
Claim 6
Independent Claim
34 words
A method of forming an electromagnetic shielding gasket comprising the steps of co-extruding a core of an elastomeric material with an outer coating of electrically conductive bands and sizing the co-extruded core and bands.
Claim 7
Independent Claim
34 words
A method of forming an electromagnetic shielding gasket comprising the steps of co-extruding a core of an elastomeric material with an outer coating of electrically conductive bands and sizing the co-extruded core and bands.
Claim 8
Dependent Claim
16 words
The method of claim 5 further comprising heating the core and bands after the sizing step.
Claim 9
Dependent Claim
21 words
The method according to claim 2 wherein the coated core is shaped into an appropriately shaped gasket after the heating step.
Claim 10
Independent Claim
62 words
A method of forming an electromagnetic shielding gasket comprising the steps of forming a core of an elastomeric material, winding at least one layer of an electrically conductive textile material about the core, passing the wound core through a die means so as to calibrate the wound core, heating the wound core to cure the core and winding up the cured core.
Claim 11
Independent Claim
62 words
A method of forming an electromagnetic shielding gasket comprising the steps of forming a core of an elastomeric material, winding at least one layer of an electrically conductive textile material about the core, passing the wound core through a die means so as to calibrate the wound core, heating the wound core to cure the core and winding up the cured core.
Claim 12
Dependent Claim
63 words
The method of claim 8 wherein the core is formed of an elastomeric material selected from the group consisting of polychloropropene, silicone and fluoro-silicone rubbers, polyurethane, fluoroinated elastomers, epichlorohydrin, thermoplastics and thermostable elastomers and combinations thereof; the textile material is formed by weaving and comprised of a conductive material selected from the group consisting of nickel, stainless steel, copper, aluminum, and coated steel.
Claim 13
Dependent Claim
14 words
The method of claim 8 wherein the core is formed by an extrusion process.
Claim 14
Dependent Claim
17 words
The method of claim 8 wherein the gasket is formed by coextruding the core and conductive material.
Claim 15
Independent Claim
118 words
A method of forming an electromagnetic shielding gasket comprising extruding an uncured core of elastomeric material selected from the group consisting of polychloroprene, silicone and fluoro-silicone rubbers, polyurethane, fluoroinated elastomers, epichlorohydrin, thermoplastics and thermostable elastomers and combinations thereof; winding an electrically conductive textile around an outer surface of the core, the textile material is formed by weaving and comprised of a conductive material selected from the group consisting of nickel, stainless steel, copper, aluminum, and coated steel, passing the wound core through a sizing die so as to calibrate the overall diameter of the core and so as to cause the textile to engage the outer surface of the core and curing the core to form a gasket.
Claim 16
Independent Claim
118 words
A method of forming an electromagnetic shielding gasket comprising extruding an uncured core of elastomeric material selected from the group consisting of polychloroprene, silicone and fluoro-silicone rubbers, polyurethane, fluoroinated elastomers, epichlorohydrin, thermoplastics and thermostable elastomers and combinations thereof; winding an electrically conductive textile around an outer surface of the core, the textile material is formed by weaving and comprised of a conductive material selected from the group consisting of nickel, stainless steel, copper, aluminum, and coated steel, passing the wound core through a sizing die so as to calibrate the overall diameter of the core and so as to cause the textile to engage the outer surface of the core and curing the core to form a gasket.
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) | 1993-10-29 | 1994-04-30 | 1994-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-29 | 1998-04-30 | 1998-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-29 | 2002-04-30 | 2002-10-30 | $7700.00 | Window Closed / Lapsed |