US4801501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated conductor with multi-layer, high temperature insulation
Assignee: Carlisle Corp
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Filing: 1987-09-21
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Granted: 1989-01-31
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Expires: 2007-09-21
Abstract
Abstract An insulated conductor for high temperature use and methods of manufacture thereof. The conductor is insulated by at least three layers of insulation, the inner layer being made of a perfluoroalkoxy, a polytetrafluoroethylene, an ethylene-tetrafluoroethylene, or a fluorinated ethylene-propylene resin compound, the second layer being made of a polyimide resin compound and the third layer being made of perfluoroalkoxy, an ethylene-tetrafluoroethylene copolymer, a non-hydrolizing, thermoset polyamide or a polyvinylidene fluoride resin compound. The layers are coated or extruded over the conductor and each other and preferably, the first layer is etched before the second layer is applied.
Inventors
- 👤 Norman R. Harlow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:16
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/02; H01B7/0208; H01B13/00; H01B13/06; H01B13/14; H01B13/141; H01B7/17; H01B7/29; H01B7/292; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2947
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
106 words
A conductor with insulation consisting essentially of a first, second and third continuous non-tape superimposed layers having a temperature rating of at least 150° C., said first layer around and in contact with said conductor and consisting essentially of a plastic selected from the group consisting of perfluoroalkoxy, polytetrafluoroethylene, ethlene-tetraflouroethylene copolymer and fluorinated ethylene-propylene resins; said second layer comprising a polyimide resin around and in contact with said first layer; said third layer being around and in contact with said second layer and consisting essentially of a plastic selected from the group consisting of perfluoroalkoxy, ethylene-tetrafluoroethylene copolymer, polyvinylidine fluoride and a substantially non-hydrolizing thermoset polyamide resin.
Claim 2
Dependent Claim
106 words
A conductor with insulation consisting essentially of a first, second and third continuous non-tape superimposed layers having a temperature rating of at least 150° C., said first layer around and in contact with said conductor and consisting essentially of a plastic selected from the group consisting of perfluoroalkoxy, polytetrafluoroethylene, ethlene-tetraflouroethylene copolymer and fluorinated ethylene-propylene resins; said second layer comprising a polyimide resin around and in contact with said first layer; said third layer being around and in contact with said second layer and consisting essentially of a plastic selected from the group consisting of perfluoroalkoxy, ethylene-tetrafluoroethylene copolymer, polyvinylidine fluoride and a substantially non-hydrolizing thermoset polyamide resin.
Claim 3
Dependent Claim
32 words
A conductor as set forth in claim 1 wherein said first layer and said third layer is perfluoroalkoxy resin and said insulated conductor has a temperature rating of at least 200° C.
Claim 4
Dependent Claim
30 words
A conductor as set forth in claim 1 wherein the radial thicknesses of said first layer and said third layer are greater than the radial thicknesses of said second layer.
Claim 5
Dependent Claim
18 words
A conductor as set forth in claim 1 wherein the polyamide resin of said ssecond layer is thermoset.
Claim 6
Dependent Claim
17 words
A conductor as set forth in claim 1 wherein at least one of said layers is thermoplastic.
Claim 7
Dependent Claim
16 words
A conductor as set forth in claim 1 wherein said second layer is an extruded layer.
Claim 8
Dependent Claim
18 words
A conductor as set forth in claim 1 wherein at least one said layer is an extruded layer.
Claim 9
Dependent Claim
25 words
A conductor as set forth in claim 1 wherein each of said first layer, said second layer and said third layer is an extruded layer.
Claim 10
Dependent Claim
19 words
A conductor as set forth in claim 1 wherein at least one of said layers is a coated layer.
Claim 11
Dependent Claim
40 words
A conductor as set forth in claim 1 wherein said first layer is selected from the group consisting of perfluoroalkoxy and polytetrafluoroethylene resins, and said third layer is selected from the group consisting of perfluoroalkoxy, ethylene-tetrafluoroethylene copolymer and polyvinylidine resins.
Claim 12
Dependent Claim
18 words
A conductor as set forth in claim 1 wherein said third layer is a substantially nonhydrolizing, thermoset polyamide.
Claim 13
Dependent Claim
30 words
A conductor as set forth in claim 1 wherein said first layer is selected from ethylene-tetrafluoroethylene and fluorinated ethylene-propylene resins and said third layer is a substantially non-hydrolizing, thermoset polyamide.
Claim 14
Dependent Claim
17 words
A conductor as set forth in claim 1 wherein said second layer consists essentially of polyimide resin.
Claim 15
Dependent Claim
15 words
A conductor as set forth in claim 10 wherein said first layer is perfluoralkoxy resin.
Claim 16
Dependent Claim
14 words
A conductor as set forth in claim 10 wherein said first layer is polytetrafluoroethylene.
Claim 17
Dependent Claim
14 words
A conductor as set forth in claim 14 wherein said third layer is ethylene-tetrafluoroethylene.
Claim 18
Dependent Claim
14 words
A conductor as set forth in claim 15 wherein said third layer is ethylene-tetrafluoroethylene.
Claim 19
Dependent Claim
15 words
A conductor as set forth in claim 14 wherein said third layer is polyvinylidine fluoride.
Claim 20
Dependent Claim
15 words
A conductor as set forth in claim 15 wherein said third layer is polyvinylidine fluoride.
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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) | 1992-01-31 | 1992-08-01 | 1993-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-31 | 1996-08-01 | 1997-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-31 | 2000-08-01 | 2001-01-31 | $7700.00 | Window Closed / Lapsed |