Patent US4806424A successfully refreshed from Google Patents.
US4806424A
Expired / Lapsed
US
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Electrical conductor insulated with insulating and jacketing material having improved resistance to hot fluids and gases
Assignee: Camco International Inc
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Filing: 1986-10-30
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Granted: 1989-02-21
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Expires: 2006-10-30
Abstract
Abstract The present invention relates to a polymer composition exhibiting high temperature oil resistance, while having improved modulus and tensile strength, as well as a novel insulated electrical conductor employing such material, said material comprising a polymeric constituent selected from the group consisting of copolymers of ethylene and propylene, polymers of same with other polymerizable materials, and mixtures of the foregoing, said constituent being in intimate mixture with from about 1 to about 150 parts by weight (per 100 parts by weight of polymer) of processing oil, and a calcined aluminum silicate clay filler containing less than about 0.5 percent by weight water (based on the weight of the clay) having an average particle size less than 1 micron with at least about 80 weight percent of the particles having size finer than 2 microns and with as much as 10 weight percent of the particles being more finely divided than 0.5 microns.
Inventors
- 👤 Robert E. Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:06
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/29; H01B7/292; C; C08; C08K; C08K3/00; C08K3/34; C08K3/346; C08K9/00; C08K9/04; C08K9/06; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; H01B7/28; Y; Y02; Y02A; Y02A30/00; Y02A30/14; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2927; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2947; Y10T428/2958; Y10T428/296; Y10T428/2962
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
179 words
An insulated electric conductor comprising: a. a metallic conductor; b. an insulating layer enclosing at least a part of said conductor comprising a polymeric constituent selected from the group consisting of copolymers of ethylene and propylene, polymers of the same with other polymerizable materals, and mixtures of the foregoing, said constituent being in intimate mixture with from about 1 to about 150 parts by weight of processing oil per 100 parts by weight of polymeric constituent, and with calcined aluminum silicate clay filler containing less than about 0.5 percent by weight of water and having an average particle size less than 1 micron with at least 80 weight percent of the particles having a size finer than 2 microns and with at least about 10 weight percent of the particles being more finely divided than 0.5 micron, virtually all of said clay filler particles being more finely divided than about 20 microns with above about 60 weight percent being finer than 1 micron; and, c. a tough outer wear layer enclosing at least a part of said insulating layer.
Claim 2
Dependent Claim
179 words
An insulated electric conductor comprising: a. a metallic conductor; b. an insulating layer enclosing at least a part of said conductor comprising a polymeric constituent selected from the group consisting of copolymers of ethylene and propylene, polymers of the same with other polymerizable materals, and mixtures of the foregoing, said constituent being in intimate mixture with from about 1 to about 150 parts by weight of processing oil per 100 parts by weight of polymeric constituent, and with calcined aluminum silicate clay filler containing less than about 0.5 percent by weight of water and having an average particle size less than 1 micron with at least 80 weight percent of the particles having a size finer than 2 microns and with at least about 10 weight percent of the particles being more finely divided than 0.5 micron, virtually all of said clay filler particles being more finely divided than about 20 microns with above about 60 weight percent being finer than 1 micron; and, c. a tough outer wear layer enclosing at least a part of said insulating layer.
Claim 3
Dependent Claim
19 words
The insulated electric conductor of claim 1 wherein said polymeric constituent of said inner layer is an ethylene-propylene-diene-monomer terpolymer.
Claim 4
Dependent Claim
20 words
The insulated electric conductor of claim 2 wherein said clay filler has been treated with a silicone liquid treatment agent.
Claim 5
Dependent Claim
33 words
The insulated electric conductor of claim 3 wherein said silicone liquid treatment agent is present in an amount of at least 1.0 parts by weight, per 100 parts by weight of said clay.
Claim 6
Dependent Claim
33 words
The insulated electric conductor of claim 4 wherein said insulating layer has a 100% modulus value of at least about 500 psi and a hardness of at least about 600 durometers (Shore A).
Claim 7
Dependent Claim
73 words
The insulated electric conductor of claim 5 wherein said outer wear layer is a tear-resistant layer comprising calcined aluminum silicate clay filler and a polymeric constituent selected from the group consisting of copolymers of ethylene and propylene, polymers of the same with other polymerizable materials, and mixtures of the foregoing in combination with at least about 20 weight percent, based on the weight of said clay filler, of additional finely divided particulate filler.
References Cited (Backward Citations)
US3485937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-21 | 1992-08-22 | 1993-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-21 | 1996-08-22 | 1997-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-21 | 2000-08-22 | 2001-02-21 | $7700.00 | Window Closed / Lapsed |