US3824330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrugated sheath catv drop wire
Assignee: General Cable Corp
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Filing: 1973-05-25
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Granted: 1974-07-16
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Expires: 1993-05-25
Abstract
Abstract This electrical cable construction has an insulated center conductor with a metal strip longitudinally folded around the insulated conductor, and with the strip having corrugations extending in directions at a substantial angle to the edges of the strip. The shield formed by the metal strip may serve as a shield or as the outer conductor of a coaxial cable. Since the major stiffening caused by corrugations is in the direction in which the corrugations extend, this invention makes the corrugation shield bend more easily around the insulated conductor; and the greater ease in folding the strip around the conductor is an important advantage with small wires. In the preferred embodiment, corrugations extend at acute angles and come together at a mid region in a herringbone pattern. The invention is useful for CATV drop cords with the shielding serving as the outer conductor.
Inventors
- 👤 F Lang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:49
CPC Classifications
H; H01; H01B; H01B11/00; H01B11/18; H01B11/1808; H01B11/1826; H01B9/00; H01B9/02; H01B9/022
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
81 words
An electrical cable construction including a center conductor, insulation surrounding the conductor, and a metal shield surrounding the insulation, said shield comprising a strip folded longitudinally around the insulated conductor and with corrugations in the shield extending at acute angles to the longitudinal edges of the strip, said angles being substantially less than arc tan C/w, where w is the pitch of longitudinal advance of each corrugation within the width of the strip, and C is the width of the strip.
Claim 2
Dependent Claim
81 words
An electrical cable construction including a center conductor, insulation surrounding the conductor, and a metal shield surrounding the insulation, said shield comprising a strip folded longitudinally around the insulated conductor and with corrugations in the shield extending at acute angles to the longitudinal edges of the strip, said angles being substantially less than arc tan C/w, where w is the pitch of longitudinal advance of each corrugation within the width of the strip, and C is the width of the strip.
Claim 3
Dependent Claim
26 words
The electrical cable construction described in claim 1 characterized by the angle of the corrugations to the longitudinal edges of the strip being less than 60*.
Claim 4
Dependent Claim
53 words
The electrical cable construction described in claim 1 characterized by each of the corrugations extending at a slope to the longitudinal edges of the strip, which slope advances the corrugations longitudinally of the cable and within the circumference of the cable for a distance substantially greater than the width of the individual corrugations.
Claim 5
Dependent Claim
18 words
The electrical cable construction described in claim 3 characterized by the strip having uncorrugated portions between successive corrugations.
Claim 6
Dependent Claim
49 words
The electrical cable construction described in claim 4 characterized by the uncorrugated portions of the strip being flat in the original strip and lying in a common plane, and the corrugations being displaced in the same direction from said plane and being entirely on one side of said plane.
Claim 7
Dependent Claim
99 words
The electrical cable construction including a center conductor, insulation surrounding the conductor, and a metal shield surrounding the insulation, said shield comprising a strip folded longitudinally around the insulated conductor and with corrugations in the shield extending in a direction having a substantial component in the direction of the length of the cable and characterized by some of the corrugations extending in directions that make an acute angle toward the right with respect to an edge of the strip and others of the corrugations making an acute angle toward the left with respect to the edge of the strip.
Claim 8
Dependent Claim
99 words
The electrical cable construction including a center conductor, insulation surrounding the conductor, and a metal shield surrounding the insulation, said shield comprising a strip folded longitudinally around the insulated conductor and with corrugations in the shield extending in a direction having a substantial component in the direction of the length of the cable and characterized by some of the corrugations extending in directions that make an acute angle toward the right with respect to an edge of the strip and others of the corrugations making an acute angle toward the left with respect to the edge of the strip.
Claim 9
Dependent Claim
40 words
The electrical cable construction described in claim 6 characterized by the folded strip having a longitudinal seam, and some of the corrugations sloping toward the right with respect to the seam and others of the corrugations sloping toward the left.
Claim 10
Dependent Claim
57 words
The electrical cable construction described in claim 7 characterized by the corrugations that slope in different directions coming together at a region which extends parallel to the seam of the shield, the radius of curvature of the shield being shorter at said region and at the seam whereby the shield is bent less sharply at the corrugations.
Claim 11
Dependent Claim
33 words
The electrical cable construction described in claim 6 characterized by the corrugations toward different edges of the strip sloping in different directions with respect to the seam and meeting in a herringbone pattern.
Claim 12
Dependent Claim
60 words
The electrical cable construction described in claim 9 characterized by the corrugations meeting along a line that extends parallel to the seam and at a region substantially midway between the edges of the strip and on the opposite side of the conductor from the seam, tHe seam edges having one side extending across the other to form a lap seam.
Claim 13
Dependent Claim
34 words
The electrical cable construction described in claim 1 characterized by the construction being a CATV drop wire, the shield constituting a conductor of the drop wire, and an insulating plastic jacket enclosing the shield.
Claim 14
Dependent Claim
31 words
The electrical cable construction described in claim 1 characterized by the corrugations being at an acute angle to the edges of the strip, said acute angle being between 15* and 75*.
References Cited (Backward Citations)
GB1048462A
Cited
US3681515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |