US3775548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filled telephone cable
Assignee: Essex International Inc
•
Filing: 1972-02-24
•
Granted: 1973-11-27
•
Expires: 1992-02-24
Abstract
Abstract In a filled telephone cable, the core is filled with a composition comprising petroleum jelly in the amount of about 80 percent by weight, polyethylene and/or polybutene-1 in the amount of about 10 percent by weight, and polyisobutylene in the amount also of about 10 percent weight.
Inventors
- 👤 F Zinser
- 👤 J Connelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:32
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/32; H01B13/322; H01B13/328; H01B11/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
12 words
The composition of claim 1 wherein said polyethylene is low density pOlyethylene.
Claim 2
Dependent Claim
88 words
A filled communication cable comprising, a core including a plurality of insulated conductors and a filler composition filling the spaces between and surrounding said conductors, said composition comprising a mixture of: petroleum jelly in the amount of about 80 weight percent of said composition, a polymer selected from the group consisting of polyethylene, polybutene-1 and mixtures thereof in the amount of about 10 weight percent of said composition, and polyisobutylene in the amount of about 10 weight percent of said composition, and an exterior sheath covering said core.
Claim 3
Dependent Claim
12 words
The cable of claim 3 wherein said polyethylene is low density polyethylene.
Claim 4
Dependent Claim
24 words
The cable of claim 3 wherein said exterior sheath includes a tape wrapped about said core, said tape being impregnated with said filler composition.
Claim 5
Dependent Claim
17 words
The cable of claim 5 wherein said exterior sheath also includes an insulative coating surrounding said tape.
References Cited (Backward Citations)
GB757395A
Cited
GB767836A
Cited
GB776174A
Cited
GB1095639A
Cited
US3642638A
Cited
US3622683A
Cited
US3607487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |