US3662091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical conductor with paper insulation
Assignee: General Cable Corp
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Filing: 1971-03-29
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Granted: 1972-05-09
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Expires: 1991-03-29
Abstract
Abstract This electrical conductor is insulated with paper formed by squeezing the water out of a ribbon of woodpulp applied to the conductor. The novel features include the offcenter location of the conductor in the ribbon so that the portion of the ribbon extending from one side of the conductor is long enough to wrap all the way around the conductor and over itself in a lap seam. A stream of water is applied to one surface of the paper to refloat some of the fibers that are in position to extend across the seam to lock the seam closed when the ribbon is wrapped around the conductor.
Inventors
- 👤 Ludwik Jachimowicz
- 👤 Edwin W Reasoner
- 👤 Jerzy A Olszewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:52
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/06; H01B13/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
120 words
An electrical conductor including a wire conductor, a coating of insulating paper around the wire conductor, the coating having an edge portion extending from one side thereof, said edge portion having an inner end joined to and of one-piece construction with the rest of the coating, the edge portion projecting far enough beyond the other part of the coating to provide a length as great as the circumference of the coating on the conductor other than the edge portion and said edge portion being wrapped around substantially the entire circumference of the coating on the wire conductor and with the outer end of the edge portion in contact with an underlying part of the coating to form a lap seam.
Claim 2
Dependent Claim
120 words
An electrical conductor including a wire conductor, a coating of insulating paper around the wire conductor, the coating having an edge portion extending from one side thereof, said edge portion having an inner end joined to and of one-piece construction with the rest of the coating, the edge portion projecting far enough beyond the other part of the coating to provide a length as great as the circumference of the coating on the conductor other than the edge portion and said edge portion being wrapped around substantially the entire circumference of the coating on the wire conductor and with the outer end of the edge portion in contact with an underlying part of the coating to form a lap seam.
Claim 3
Dependent Claim
37 words
The electrical conductor described in claim 1 characterized by the paper being made of woodpulp and having surface fibers at the outer end of the edge portion extending across the lap seam to hold the seam closed.
Claim 4
Dependent Claim
83 words
The electrical conductor described in claim 2 characterized by the paper having two edge portions extending from the part of the coating on opposite sides of the conductor, the edge portion that wraps around substantially the entire circumference being longer than the other edge portion and completely covering it when the edge portions are wrapped to form an insulation tube of substantially circular cross section, and dye on the outside surface of at least longer edge portion and only on said outside surface.
Claim 5
Dependent Claim
58 words
The electrical conductor described in claim 1 characterized by the edge portion being of a width greater than the circumference of the coating on the conductor other than said edge portion and the outer end of said edge portion overlapping a portion of its own width that is near to its inner end to form a lap seam.
Claim 6
Dependent Claim
106 words
The electrical conductor described in claim 1 characterized by the paper being made of a mass of woodpulp applied to the wire conductor and with some of the woodpulp extending for a radial distance outward from the conductor further than the other pulp as the pulp is originally applied, and the paper being made of woodpulp from which water has been squeezed out after application of the woodpulp to the wire conductor, the outer surface of the edge portion adjacent to the lap seam having raised fibers of the paper extending across the lap seam and different from other fibers that are in their squeezed condition.
Claim 7
Dependent Claim
39 words
The electrical conductor described in claim 5 characterized by all of the paper, including the fibers that extend across the lap seam, being pressed down firmly with smooth circumferencial surface around the entire outside surface of the insulated conductor.
Claim 8
Dependent Claim
32 words
The electrical conductor described in claim 3 characterized by the longer edge portion being at least 70 percent of the combined width of the conductor plus the length of both edge portions.
Claim 9
Dependent Claim
60 words
The electrical conductor described in claim 3 characterized by the shorter edge portion being wrapped circumferentially around a part of the circumferential extent of the other paper insulation on the conductor and in the same direction as the longer edge portion is wrapped but not extending far enough to overlap any of the outside surface of the longer edge portion.
References Cited (Backward Citations)
US1800411A
Cited
US3409734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |