US3812282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tearable insulation sheath for cables
Assignee: International Standard Electric Corp
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Filing: 1973-01-11
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Granted: 1974-05-21
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Expires: 1993-01-11
Abstract
Abstract A cable sheath includes a pair of parallel longitudinal depressions and a rim therebetween to provide a simplified accessible cutting web for manually splitting open the cable. The depressions can be on the inner or outer surfaces or both and the rim may include a wire thread and a raised outer surface to facilitate the tearing.
Inventors
- 👤 J Johansson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:04
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/40; H01B7/38
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
130 words
A tubular sheath of insulation for cables comprising an inner tubular surface of insulating material surrounding a central coaxial area adapted to accommodate a plurality of insulated conductors, an exposed outer tubular surface of said insulating material, a pair of closely spaced parallel longitudinal grooves along one of said surfaces, a raised longitudinal surface portion disposed between said grooves, and a further longitudinal groove along the other of said surfaces opposite said parallel grooves, the portions of said insulating material between said grooves on opposite surfaces being of reduced thickness with respect to other portions of said material, said reduced thickness material between said opposite grooves being sufficiently thin to permit the tearing of the tubular insulation sheath along said pair of grooves and provide access to said insulated conductors.
Claim 2
Dependent Claim
130 words
A tubular sheath of insulation for cables comprising an inner tubular surface of insulating material surrounding a central coaxial area adapted to accommodate a plurality of insulated conductors, an exposed outer tubular surface of said insulating material, a pair of closely spaced parallel longitudinal grooves along one of said surfaces, a raised longitudinal surface portion disposed between said grooves, and a further longitudinal groove along the other of said surfaces opposite said parallel grooves, the portions of said insulating material between said grooves on opposite surfaces being of reduced thickness with respect to other portions of said material, said reduced thickness material between said opposite grooves being sufficiently thin to permit the tearing of the tubular insulation sheath along said pair of grooves and provide access to said insulated conductors.
Claim 3
Dependent Claim
57 words
The device of claim 1 including a second pair of closely spaced parallel grooves along said other surface opposite the first said pair of grooves, said second pair including said further groove, said opposite pairs of grooves forming a pair of thin webs between said inner and outer surfaces and a thick raised portion between said webs.
Claim 4
Dependent Claim
31 words
The device of claim 2 including a non-conducting longitudinal thread enclosed within said thick raised portion, said thread being for facilitating the manual tearing of said insulation sheath along said grooves.
Claim 5
Dependent Claim
20 words
The device of claim 3 wherein said thick raised portion includes a rim portion extending outwardly beyond said outer surface.
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) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |