US4089923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of submarine cable
Assignee: International Telephone and Telegraph Corp
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Filing: 1977-02-17
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Granted: 1978-05-16
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Expires: 1997-02-17
Abstract
Abstract In the manufacture of submarine coaxial cable, the dielectric sizing process is performed immediately after and in tandem with dielectric extrusion and cooling processes so that a portion of the water-rich surface layer of the dielectric resulting from the cooling process will be removed before the water has time to permeate into the inner regions of the dielectric.
Inventors
- 👤 Charalambos Georgiou Theodossi
- 👤 David Arthur Hibbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:54
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/06; H01B13/14; B; B29; B29C; B29C48/00; B29C48/03; B29C48/05; B29C48/06; B29C48/15; B29C48/25; B29C48/88; B29C48/911; B29C48/919
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
73 words
In a method of manufacturing a submarine coaxial cable, the steps comprising: extruding a dielectric around the center conductor for the cable; cooling in a liquid the dielectric covering on the center conductor to a stabilized profile; and thereafter sizing the dielectric covering to remove the outer layer thereof contacted by the cooling liquid prior to appreciable permeation of cooling liquid from the outer region of the dielectric into the inner region thereof.
Claim 2
Dependent Claim
73 words
In a method of manufacturing a submarine coaxial cable, the steps comprising: extruding a dielectric around the center conductor for the cable; cooling in a liquid the dielectric covering on the center conductor to a stabilized profile; and thereafter sizing the dielectric covering to remove the outer layer thereof contacted by the cooling liquid prior to appreciable permeation of cooling liquid from the outer region of the dielectric into the inner region thereof.
Claim 3
Dependent Claim
25 words
A method of manufacturing a submarine coaxial cable as set forth in claim 1 wherein: said sizing removes at least 3% of the dielectric thickness.
Claim 4
Dependent Claim
24 words
A method of manufacturing a submarine coaxial cable as set forth in claim 1 wherein: said sizing removes about 5% of the dielectric thickness.
Claim 5
Dependent Claim
57 words
In a method of manufacturing a submarine coaxial cable, the steps comprising: extruding a dielectric around the center conductor for the cable; passing the dielectric covered center conductor through a cooling liquid; and removing the outer layer of the dielectric covering contacted by the cooling liquid immediately after and in tandem with the extrusion and cooling steps.
Claim 6
Dependent Claim
57 words
In a method of manufacturing a submarine coaxial cable, the steps comprising: extruding a dielectric around the center conductor for the cable; passing the dielectric covered center conductor through a cooling liquid; and removing the outer layer of the dielectric covering contacted by the cooling liquid immediately after and in tandem with the extrusion and cooling steps.
Claim 7
Independent Claim
88 words
An apparatus for manufacturing submarine coaxial cable comprising: means for extruding a dielectric around the center conductor for the cable; means for cooling the dielectric covered center conductor as it emerges from said extrusion means, said cooling means including a receptacle for containing a cooling liquid; dielectric sizing means separate from but in tandem with said extrusion means and said cooling means for removing the outer layer of the dielectric; and means for drawing the center conductor through said extrusion means, cooling means and sizing means in sequence.
Claim 8
Independent Claim
88 words
An apparatus for manufacturing submarine coaxial cable comprising: means for extruding a dielectric around the center conductor for the cable; means for cooling the dielectric covered center conductor as it emerges from said extrusion means, said cooling means including a receptacle for containing a cooling liquid; dielectric sizing means separate from but in tandem with said extrusion means and said cooling means for removing the outer layer of the dielectric; and means for drawing the center conductor through said extrusion means, cooling means and sizing means in sequence.
Claim 9
Dependent Claim
31 words
An apparatus for manufacturing submarine coaxial cable as set forth in claim 5 wherein: said center conductor drawing means includes a hauloff device between said cooling means and said sizing means.
References Cited (Backward Citations)
US2384224A
Cited
US2731069A
Cited
US2820987A
Cited
US2904846A
Cited
US3290995A
Cited
US3356790A
Cited
US3849192A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-15 | 1981-11-14 | 1982-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-15 | 1985-11-14 | 1986-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-15 | 1989-11-14 | 1990-05-16 | $7700.00 | Window Closed / Lapsed |