Patent US5949029A successfully refreshed from Google Patents.
US5949029A
Expired / Lapsed
US
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Conductive elastomers and methods for fabricating the same
Assignee: ABB Installation Products International LLC
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Filing: 1996-10-28
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Granted: 1999-09-07
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Expires: 2016-10-28
Abstract
Abstract Several different types of electrically conductive elastomers are disclosed along with the methods for their fabrication. In one particular embodiment, a layered composition is disclosed which comprises a substrate, a first layer, and a second layer. The substrate is formed of a non-conductive elastic material and it has an outer surface. The first layer, which is formed with a non-conductive elastic material, is grafted to the outer surface of the substrate. The second layer, which is formed with a non-conductive elastic material having a quantity of conductive flakes interspersed therein, is grafted to an outer surface of the first layer. The second layer can further be formed with a quantity of rounded or jagged conductive particles interspersed in the non-conductive elastic material such that some of the conductive particles are present along an outer surface of the second layer. Alternatively, a quantity of rounded or jagged conductive particles may be imbedded in an outer surface of the second layer.
Inventors
- 👤 David R. Crotzer
- 👤 Jonathan W. Goodwin
- 👤 Arthur G. Michaud
- 👤 David A. DeDonato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:18
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/02; H01R13/22; H01R13/24; H01R13/2407; H01R13/2414; B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/029; H01H13/00; H01H13/70; H01H13/702; H01R12/00; H01R12/50; H01R12/51; H01R12/52; H01R13/03; H01R13/035; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; H05K1/095; H05K3/00; H05K3/10; H05K3/102; H05K3/30; H05K3/32; H05K3/325; H05K3/38; H05K3/386; H05K9/00; H05K9/0007; H05K9/002; H05K9/0039; H10; H10W; H10W70/00; H10W70/60; H10W70/62; H10W70/63; H10W70/635; H01H2209/00; H01H2209/014; H01H2239/00; H01H2239/034; H01R12/70; H01R12/71; H01R12/712; H01R12/714; H01R13/648; H01R13/658; H01R13/6598; H01R13/6599; H05K2201/00; H05K2201/01; H05K2201/0104; H05K2201/0133; H05K2201/02; H05K2201/0203; H05K2201/0242; H05K2201/0245; H05K2201/03; H05K2201/032; H05K2201/0329; H05K2203/00; H05K2203/11; H05K2203/1168; Y; Y10; Y10T; Y10T428/00; Y10T428/25
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
112 words
A layered composition comprising: a substrate, said substrate having an outer surface, said substrate being formed of a non-conductive elastically resilient material; a first layer having a first surface and a second surface, the first surface thermally grafted directly to at least a portion of said outer surface of said substrate, said first layer being formed of a non-conductive elastically resilient material; and a second layer having a first surface and a second surface, said first surface thermally grafted directly to at least a portion of said second surface of said first layer, said second layer being formed of a non-conductive elastically resilient material having a quantity of conductive flakes interspersed therein.
Claim 2
Dependent Claim
112 words
A layered composition comprising: a substrate, said substrate having an outer surface, said substrate being formed of a non-conductive elastically resilient material; a first layer having a first surface and a second surface, the first surface thermally grafted directly to at least a portion of said outer surface of said substrate, said first layer being formed of a non-conductive elastically resilient material; and a second layer having a first surface and a second surface, said first surface thermally grafted directly to at least a portion of said second surface of said first layer, said second layer being formed of a non-conductive elastically resilient material having a quantity of conductive flakes interspersed therein.
Claim 3
Dependent Claim
26 words
The layered composition as defined in claim 1, wherein the thermal grafting of said first layer and said second layer is performed by a single process.
Claim 4
Dependent Claim
19 words
The layered composition as defined in claim 1, wherein said conductive flakes are formed of a solid conductive material.
Claim 5
Dependent Claim
25 words
The layered composition as defined in claim 1, wherein said conductive flakes are formed of a semiconductive material that is coated with a conductive material.
Claim 6
Dependent Claim
25 words
The layered composition as defined in claim 1, wherein said conductive flakes are formed of a non-conductive material that is coated with a conductive material.
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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) | 2002-09-06 | 2003-03-08 | 2003-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-09-06 | 2007-03-08 | 2007-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-09-06 | 2011-03-08 | 2011-09-07 | $7700.00 | Window Closed / Lapsed |