US4033800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making an electric cable
Assignee: Associated Materials LLC
•
Filing: 1972-12-29
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Granted: 1977-07-05
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Expires: 1992-12-29
Abstract
Abstract A method of making electric cable having a plurality of electric conductors stranded together with a deformable semi-conducting strand in each valley between the conductors and a shielding composition around and in intimate contact with the conductors and strands. The conductors and strands are stranded together into a stranding die and the plastic composition is forced around them while they are in the stranding die.
Inventors
- 👤 George E. Ollis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:56
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/32; H01B13/322; H01B13/323; H01B13/02; H01B13/0292
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
125 words
The method of making a stranded electric cable having a plastic composition in continuous and intimate contact with the individual conductors throughout the length of the cable which comprises twisting the conductors together and passing the conductors through a stranding die, said stranding die having a long narrow passageway sized for the desired dimension of plastic composition surrounding the stranded conductors, a chamber located intermediate the ends of the passageway and a funnel shaped entrance, while simultaneously applying a plastic under high pressure through a transverse opening in the die into the chamber and at the same time through part of the transverse opening to the surface of the funnel shaped entrance through a branch opening connecting the transverse opening and the funnel shaped entrance.
Claim 2
Independent Claim
125 words
The method of making a stranded electric cable having a plastic composition in continuous and intimate contact with the individual conductors throughout the length of the cable which comprises twisting the conductors together and passing the conductors through a stranding die, said stranding die having a long narrow passageway sized for the desired dimension of plastic composition surrounding the stranded conductors, a chamber located intermediate the ends of the passageway and a funnel shaped entrance, while simultaneously applying a plastic under high pressure through a transverse opening in the die into the chamber and at the same time through part of the transverse opening to the surface of the funnel shaped entrance through a branch opening connecting the transverse opening and the funnel shaped entrance.
Claim 3
Dependent Claim
84 words
The method of making a stranded electric cable according to claim 5 in which the plastic composition is semi-conducting and which includes providing a plurality of deformable strands of semi-conducting material, applying the plastic composition under pressure into and around the deformable strands while stranding the electric conductors and deformable strands together around a center core with a single deformable strand laid in each valley between conductors and deforming the deformable strands by compression upon passage through the sizing section of the stranding die.
Claim 4
Dependent Claim
48 words
The method of making a stranded electric cable according to claim 2 in which the deformable strand includes cotton impregnated with carbon particles; the plastic composition is a vulcanizable mixture of rubber, carbon black, plasticizer and curing agent and air pressure is used for applying the plastic composition.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-04 | 1981-01-03 | 1981-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-04 | 1985-01-03 | 1985-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-04 | 1989-01-03 | 1989-07-05 | $7700.00 | Window Closed / Lapsed |