US3983313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric cables
Assignee: Lynenwerk KG
•
Filing: 1975-02-04
•
Granted: 1976-09-28
•
Expires: 1995-02-04
Abstract
Abstract An insulated cable core is sheathed in polyolefin. The polyolefin for instance sheath of polyolefin for instance contains parallel non impregnated glass fibers which are undulated to improve mechanical bonding with the sheath.
Inventors
- 👤 Robert Ney
- 👤 Hans-Christoph Rhiem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:16
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/18; H01B7/182; B; B29; B29C; B29C48/00; B29C48/03; B29C48/05; B29C48/06; B29C48/15; B29C48/156; H01B11/00; H01B3/00; H01B3/18; H01B3/20; H01B3/24; H01B7/187; H01B9/00; H01B9/008
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
87 words
An electric cable which includes: an electric cable core comprising at least one insulated electric conductor, a polyethylene cable sheath surrounding said cable core, and bundles of unimpregnated glass fibers free from a bonding agent embedded in said polyethylene cable sheath and relatively spaced concentrically about said cable core, each of said bundles being enveloped by said sheath material sufficient to establish a mechanical bond between the enveloping polyethylene and said bundles of glass fibers, said bundles forming undulations in a direction longitudinally of said cable core.
Claim 2
Dependent Claim
87 words
An electric cable which includes: an electric cable core comprising at least one insulated electric conductor, a polyethylene cable sheath surrounding said cable core, and bundles of unimpregnated glass fibers free from a bonding agent embedded in said polyethylene cable sheath and relatively spaced concentrically about said cable core, each of said bundles being enveloped by said sheath material sufficient to establish a mechanical bond between the enveloping polyethylene and said bundles of glass fibers, said bundles forming undulations in a direction longitudinally of said cable core.
Claim 3
Dependent Claim
33 words
A cable according to claim 1, in which the width of each web of sheath material between two neighboring bundles is so selected as to be twice the diameter of a single yarn.
Claim 4
Dependent Claim
32 words
A cable according to claim 1, in which the width of each web of sheath material between two neighboring bundles is so selected as to be twice the diameter of doubled yarn.
Claim 5
Dependent Claim
33 words
A cable according to claim 1, wherein the distance of the bundles from the radially inner surface of the sheath is selected so as to equal twice the diameter of a single yarn.
Claim 6
Dependent Claim
32 words
A cable according to claim 1, wherein the distance of the bundles from the radially inner surface of the sheath is selected so as to equal twice the diameter of doubled yarn.
Claim 7
Dependent Claim
57 words
A cable according to claim 1, which includes the providing of the number of bundles and the number of glass fiber yarns in conformity with the number of conductor pairs in the cable core, the required minimum braking strength of the cable and fineness of the single and double yarns being determined according to the following table:
Claim 8
Dependent Claim
19 words
A cable according to claim 1, in which glass fibers of different kinds are jointly incorporated in a bundle.
Claim 9
Dependent Claim
27 words
A cable according to claim 7, in which said glass fibers of different kinds are selected from single and double yarns and spun filaments of different thicknesses.
Claim 10
Dependent Claim
77 words
A cable according to claim 1, which includes the providing of the number of bundles and the number of glass fiber yarns in conformity with the number of conductor pairs in the cable core, the required minimum braking strength of the cable and fineness of the single and double yarns being determined according to the following table: ______________________________________
Conductor Glass fiber yarns
pairs Bundles singles/doubles
Yarn Fineness
______________________________________
4 18 6 singles 1 × 136 tex.
______________________________________
Claim 11
Dependent Claim
77 words
A cable according to claim 1, which includes the providing of the number of bundles and the number of glass fiber yarns in conformity with the number of conductor pairs in the cable core, the required minimum braking strength of the cable and fineness of the single and double yarns being determined according to the following table: ______________________________________
Conductor Glass fiber yarns
pairs Bundles singles/doubles
Yarn Fineness
______________________________________
4 18 2 doubles 3 × 136 tex.
______________________________________
Claim 12
Dependent Claim
77 words
A cable according to claim 1, which includes the providing of the number of bundles and the number of glass fiber yarns in conformity with the number of conductor pairs in the cable core, the required minimum braking strength of the cable and fineness of the single and double yarns being determined according to the following table: ______________________________________
Conductor Glass fiber yarns
pairs Bundles singles/doubles
Yarn Fineness
______________________________________
6 18 7 singles 1 × 136 tex.
______________________________________
Claim 13
Dependent Claim
77 words
A cable according to claim 1, which includes the providing of the number of bundles and the number of glass fiber yarns in conformity with the number of conductor pairs in the cable core, the required minimum braking strength of the cable and fineness of the single and double yarns being determined according to the following table: ______________________________________
Conductor Glass fiber yarns
pairs Bundles singles/doubles
Yarn Fineness
______________________________________
10 24 7 singles 1 × 136 tex.
______________________________________
Claim 14
Dependent Claim
77 words
A cable according to claim 1, which includes the providing of the number of bundles and the number of glass fiber yarns in conformity with the number of conductor pairs in the cable core, the required minimum braking strength of the cable and fineness of the single and double yarns being determined according to the following table: ______________________________________
Conductor Glass fiber yarns
pairs Bundles singles/doubles
Yarn Fineness
______________________________________
10 24 14 singles 1 × 68 tex.
______________________________________
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-28 | 1980-03-29 | 1980-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-28 | 1984-03-29 | 1984-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-28 | 1988-03-29 | 1988-09-28 | $7700.00 | Window Closed / Lapsed |