Patent US3567845A successfully refreshed from Google Patents.
US3567845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated cable joint
Assignee: General Cable Corp
•
Filing: 1970-01-16
•
Granted: 1971-03-02
•
Expires: 1990-01-16
Abstract
Abstract The conductor at a cable joint is insulated by successive layers of a rubber type tape, such as butyl rubber or ethylene propylene rubber tape, around the conductors and incorporating a plurality of layers of another type of tape, such as cross-linked polyethylene or polypropylene tape, which has a lower electric loss value than the rubber type tape, in successive single layers with at least two layers of the rubber type tape under each layer of the other type. The layers of rubber type tape are bonded to each other and each layer of the other type is preferably arranged in an open spiral so that the layer of rubber type tape above bonds to the one below. Also, each layer of the other type is preferably shrunk on the layer of the rubber type below it.
Inventors
- 👤 George Bahder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:04
CPC Classifications
H; H02; H02G; H02G15/00; H02G15/08; H02G15/18; H02G15/196
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
121 words
A method of insulating a cable joint wherein the cable insulation has been removed from the adjacent end portions of two cable conductors which are joined, said method comprising successively wrapping At least two layers of a stretchable, selfbonding dielectric rubber-type tape spirally around the uninsulated portions of joined conductors, wrapping a layer of another type of dielectric tape, which has a lower electric loss value than said rubber-type tape, spirally around the outer layer of said rubber-type tape, and similarly wrapping additional layers of said rubber-type tape and said other type tape to provide a plurality of layers of said other type tape with at least two layers of said rubber-type tape under each layer of said other type tape.
Claim 2
Independent Claim
121 words
A method of insulating a cable joint wherein the cable insulation has been removed from the adjacent end portions of two cable conductors which are joined, said method comprising successively wrapping At least two layers of a stretchable, selfbonding dielectric rubber-type tape spirally around the uninsulated portions of joined conductors, wrapping a layer of another type of dielectric tape, which has a lower electric loss value than said rubber-type tape, spirally around the outer layer of said rubber-type tape, and similarly wrapping additional layers of said rubber-type tape and said other type tape to provide a plurality of layers of said other type tape with at least two layers of said rubber-type tape under each layer of said other type tape.
Claim 3
Dependent Claim
75 words
The method of claim 1 characterized by winding each successive layer of said rubber-type tape in the opposite direction from the layer directly below, winding each layer of said other type of tape in the same direction as the layer of said rubber-type tape directly below, and winding each layer of said rubber type above a layer of said other type tape in the same direction as the latter layer of said other type tape.
Claim 4
Dependent Claim
26 words
The method of claim 1 characterized by winding the layers of said other type of tape with shorter lays than the layers of said other type.
Claim 5
Dependent Claim
18 words
The method of claim 1 in which said other type of tape is wound in an open spiral.
Claim 6
Dependent Claim
18 words
The method of claim 1 in which said rubber type of tape is wound in overlapping spiral turns.
Claim 7
Dependent Claim
24 words
The method of claim 1 in which said rubber-type tape is from the group consisting of butyl rubber tapes and ethylener propylene rubber tapes.
Claim 8
Dependent Claim
24 words
The method of claim 1 in which said other type of tape is from the group consisting of cross-linked polyethylene tape and polypropylene tape.
Claim 9
Dependent Claim
36 words
The method of claim 1 in which said other type of tape is cross-linked polyethylene and is at a temperature of about 130* C. when it is applied whereby it shrinks in situ when it cools.
Claim 10
Dependent Claim
71 words
A cable joint wherein insulation around the joined conductors comprises a plurality of layers of a dielectric rubber type tape bonded to each other and a plurality of layers of another type of dielectric tape, which has a lower electric loss value than the rubber-type tape, interspersed between layers of the rubber-type tape with at least two layers of the rubber-type tape between each two layers of the said other type.
Claim 11
Dependent Claim
71 words
A cable joint wherein insulation around the joined conductors comprises a plurality of layers of a dielectric rubber type tape bonded to each other and a plurality of layers of another type of dielectric tape, which has a lower electric loss value than the rubber-type tape, interspersed between layers of the rubber-type tape with at least two layers of the rubber-type tape between each two layers of the said other type.
Claim 12
Dependent Claim
50 words
The cable insulation of claim 9 characterized by winding each layer of said other type tape in an open spiral, and wherein the layer of rubber-type tape above a layer of the other type tape is bonded through the openings in said spiral to the layer of rubber-type tape below.
Claim 13
Dependent Claim
26 words
The cable joint of claim 9 in which said rubber-type tape is selected from the group consisting of butyl rubber tapes and ethylene propylene rubber tapes.
Claim 14
Dependent Claim
26 words
The cable joint of claim 9 in which said other type of tape is selected from the group consisting of cross-linked polyethylene tape and polypropylene tape.
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |