US3798350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Co-axial cable with strength member
Assignee: Post Office
•
Filing: 1973-01-22
•
Granted: 1974-03-19
•
Expires: 1993-01-22
Abstract
Abstract A telecommunication submarine cable of co-axial construction has a multistrand centre core imparting tensile strength to the cable, the core having adjacent layers of the core separated by a layer of soft metal.
Inventors
- 👤 E Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:06
CPC Classifications
D; D07; D07B; D07B1/00; D07B1/06; D07B1/0693; D07B1/14; D07B1/147; H; H01; H01B; H01B7/00; H01B7/04; H01B7/14; D07B2201/00; D07B2201/20; D07B2201/2001; D07B2201/2002; D07B2201/2015; D07B2201/2024; D07B2201/2029; D07B2201/203; D07B2201/2036; D07B2201/2071; D07B2201/2072; D07B2201/2074; D07B2205/00; D07B2205/30; D07B2205/3021; D07B2205/3025; D07B2205/3046; D07B2205/305; D07B2205/306; D07B2205/3067
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
66 words
A communication cable of co-axial construction having, within the inner conductor of the cable a strength member providing the tensile strength that the cable is required to possess, the strength member comprising at least two layers of helically wound wires, adjacent layers having layers of opposite hand, and at least one layer of a comparatively soft metal interposed between adjacent ones of said first named layers.
Claim 2
Dependent Claim
66 words
A communication cable of co-axial construction having, within the inner conductor of the cable a strength member providing the tensile strength that the cable is required to possess, the strength member comprising at least two layers of helically wound wires, adjacent layers having layers of opposite hand, and at least one layer of a comparatively soft metal interposed between adjacent ones of said first named layers.
Claim 3
Dependent Claim
19 words
A communication cable as claimed in claim 1 in which the comparatively soft metal has a high electrical conductivity.
Claim 4
Dependent Claim
26 words
A communication cable as claimed in claim 2 in which the comparatively soft metal is selected from the group consisting of aluminium, copper and mild steel.
Claim 5
Dependent Claim
24 words
A communication cable as claimed in claim 1 in which the layer of comparatively soft metal comprises at least one tape of such metal.
Claim 6
Dependent Claim
26 words
A communication cable as claimed in claim 1 in which the layer of comparatively soft metal comprises at least one helically wound tape of such metal.
Claim 7
Dependent Claim
26 words
A communication cable as claimed in claim 1 in which the layer of comparatively soft metal comprises at least one longitudinally applied tape of such metal.
Claim 8
Dependent Claim
24 words
A communication cable as claimed in claim 1 in which the layer of comparatively soft metal comprises a plurality of wires of such metal.
Claim 9
Dependent Claim
27 words
A communication cable as claimed in claim 1 in which each of the helically wound wires has a cross section normal to its length which is circular.
Claim 10
Dependent Claim
28 words
A communication cable as claimed in claim 1 in which each of the helically wound wires has a cross section normal to its length which is key-stone shaped.
References Cited (Backward Citations)
US2953627A
Cited
US3549788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |