Patent US3838379A successfully refreshed from Google Patents.
US3602632A
Expired / Lapsed
US
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Shielded electric cable
Assignee: Associated Materials LLC
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Filing: 1970-01-05
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Granted: 1971-08-31
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Expires: 1990-01-05
Abstract
Abstract A shielded electric cable having a plurality of insulated electric conductors stranded together with a deformable semiconducting strand in each valley between the conductors and a shielding composition around and in intimate contact with the conductors and strands. Depending upon the type of service the shielding composition may be such as to remain plastic in the finished cable or may be such that it will be vulcanized. The conductors and strands are stranded together into a stranding die and the plastic shielding 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 19:38
CPC Classifications
H; H01; H01B; H01B9/00; H01B9/02; H01B9/027; G; G01; G01V; G01V5/00; G01V5/04; G01V5/045
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
104 words
A shielded electric cable comprising a plurality of insulated electric conductors stranded together around a center core with helical valleys between the conductors; a single deformable compressed semiconducting strand substantially filling each valley; and a shielding composition around said conductors and semiconducting strands in intimate contact therewith; said shielding composition being of the class consisting of a mixture of30 to 70 percent by weight of depolymerized rubber and the remainder carbon particles and plasticizer, and a mixture of 25 to 40 percent by weight of polysulfide rubber, 20 to 40 percent carbon particles, 15 to 35 percent plasticizer, and the remainder a curing agent.
Claim 2
Dependent Claim
104 words
A shielded electric cable comprising a plurality of insulated electric conductors stranded together around a center core with helical valleys between the conductors; a single deformable compressed semiconducting strand substantially filling each valley; and a shielding composition around said conductors and semiconducting strands in intimate contact therewith; said shielding composition being of the class consisting of a mixture of30 to 70 percent by weight of depolymerized rubber and the remainder carbon particles and plasticizer, and a mixture of 25 to 40 percent by weight of polysulfide rubber, 20 to 40 percent carbon particles, 15 to 35 percent plasticizer, and the remainder a curing agent.
Claim 3
Dependent Claim
56 words
An electric cable according to claim 1 including a semiconducting tape around the assembly of conductors, semiconducting strands and shielding composition, a first layer of armor wires helically wound about said semiconducting tape, and a second layer of armor wires helically wound about said first layer with a lay opposite to that of the first layer.
Claim 4
Dependent Claim
33 words
An electric cable according to claim 1 in which said shielding composition remains plastic and consists of 30 to 70 percent by weight of depolymerized rubber and the remainder carbon particles and plasticizer.
Claim 5
Dependent Claim
20 words
An electric cable according to claim 3 in which said semiconducting strand is cotton impregnated with resin and carbon particles.
Claim 6
Dependent Claim
56 words
An electric cable according to claim 4 including a semiconducting tape around the assembly of conductors, semiconducting strands and shielding composition, a first layer of armor wires helically wound about said semiconducting tape, and a second layer of armor wires helically wound about said first layer with a lay opposite to that of the first layer.
Claim 7
Dependent Claim
40 words
An electric cable according to claim 1 in which said shielding composition consists of 25 to 40 percent by weight of polysulfide rubber, 20 to 40 percent carbon particles, 15 to 35 percent plasticizer, and the remainder a curing agent.
Claim 8
Dependent Claim
56 words
An electric cable according to claim 6 including a semiconducting tape around the assembly of conductors, semiconducting strands and shielding composition, a first layer of armor wires helically wound about said semiconducting tape, and a second layer of armor wires helically wound about said first layer with a lay opposite to that of the first layer.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |