US4376231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Communication cable sealed with a re-enterable sealing tape
Assignee: AT&T Inc
•
Filing: 1981-08-21
•
Granted: 1983-03-08
•
Expires: 2001-08-21
Abstract
Abstract An improved, solvent-resistant sealing compound is described. It is an acrylic rubber composition adapted particularly for sealing splice case closures around telecommunications cable.
Inventors
- 👤 Raffaele A. Sabia
- 👤 James L. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:57
CPC Classifications
H; H02; H02G; H02G15/00; H02G15/08; H02G15/10; H02G15/113; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2927; Y10T428/2933; Y10T428/294; Y10T428/2958; Y10T428/296
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
104 words
A communications cable comprising two cable ends joined together to form a splice, and an airtight cable splice closure covering the splice and sealed to the two ends of the cable with a sealing cord or tape, with said closure comprising mating portions joined together at a re-enterable and re-sealable seam sealed with said sealing cord or tape, said cord or tape comprising the following ingredients in the approximate amounts indicated: ______________________________________
Range
Parts by Weight
Min. Max.
______________________________________
Acrylic rubber 22 27
Polyisobutylene 7 10.5
Carbon black 5 11
Tricresyl phosphate or
10 14
chlorinated paraffin
Nonconductive, fine 40 50
particle filler
______________________________________
Claim 2
Dependent Claim
104 words
A communications cable comprising two cable ends joined together to form a splice, and an airtight cable splice closure covering the splice and sealed to the two ends of the cable with a sealing cord or tape, with said closure comprising mating portions joined together at a re-enterable and re-sealable seam sealed with said sealing cord or tape, said cord or tape comprising the following ingredients in the approximate amounts indicated: ______________________________________
Range
Parts by Weight
Min. Max.
______________________________________
Acrylic rubber 22 27
Polyisobutylene 7 10.5
Carbon black 5 11
Tricresyl phosphate or
10 14
chlorinated paraffin
Nonconductive, fine 40 50
particle filler
______________________________________
Claim 3
Dependent Claim
44 words
The cable of claim 1 wherein the seam sealed by said sealing cord or tape remains airtight when said cable splice closure is sealed at room temperature or at 30 degrees F. and cycled 100 times from -40 degrees F. to +140 degrees F.
Claim 4
Dependent Claim
29 words
The cable of claim 1 wherein said ingredients are: ______________________________________
Parts by Weight
______________________________________
Acrylic rubber 24.7
Polyisobutylene 8.7
Hydrated alumina
44.6
Tricresyl phosphate
12.0
Carbon black 10.0
______________________________________
References Cited (Backward Citations)
US2462977A
Cited
US2864882A
Cited
US2827098A
Cited
US3271505A
Cited
US3337681A
Cited
US3514417A
Cited
US3614298A
Cited
US3767608A
Cited
US3796823A
Cited
US4216351A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-07 | 1986-09-06 | 1987-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-07 | 1990-09-06 | 1991-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-07 | 1994-09-06 | 1995-03-08 | $7700.00 | Window Closed / Lapsed |