US4472595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coaxial cable having enhanced handling and bending characteristics
Assignee: Commscope Inc of North Carolina
•
Filing: 1982-07-19
•
Granted: 1984-09-18
•
Expires: 2002-07-19
Abstract
Abstract Significantly enhanced bending characteristics are provided in a coaxial cable by reducing the stiffness of the tubular sheath in relation to the stiffness of the core. The cable comprises a core including at least one inner conductor and a low loss dielectric surrounding the inner conductor, and an electrically and mechanically continuous tubular metallic sheath closely surrounding the core and being adhesively bonded thereto, the ratio of the stiffness of the core to the stiffness of the tubular sheath being greater than 5.
Inventors
- 👤 Steve A. Fox
- 👤 Larry W. Nelson
- 👤 Dave W. Neville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:48
CPC Classifications
H; H01; H01B; H01B11/00; H01B11/18; H01B11/1808; H01B11/1826; H01B11/1878; H01B13/00; H01B13/22; H01B13/225
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
63 words
A coaxial cable comprising a core including at least one inner conductor and a low loss dielectric surrounding the inner conductor, and an electrically and mechanically continuous non-overlapping tubular metallic sheath closely surrounding said core and being adhesively bonded thereto, the ratio of the radial compressive stiffness of the core to the radial compressive stiffness of the tubular sheath being greater than 5.
Claim 2
Dependent Claim
63 words
A coaxial cable comprising a core including at least one inner conductor and a low loss dielectric surrounding the inner conductor, and an electrically and mechanically continuous non-overlapping tubular metallic sheath closely surrounding said core and being adhesively bonded thereto, the ratio of the radial compressive stiffness of the core to the radial compressive stiffness of the tubular sheath being greater than 5.
Claim 3
Dependent Claim
22 words
A coaxial cable according to claim 1 wherein said electrically and mechanically continuous tubular metallic sheath comprises a smooth-walled longitudinally welded tube.
Claim 4
Dependent Claim
18 words
A coaxial cable according to claim 2 wherein said tubular metallic sheath is formed from "O" temper aluminum.
Claim 5
Dependent Claim
26 words
A coaxial cable according to claim 1 wherein said tubular metallic sheath has a thickness of no greater than about 2.5 percent of its outer diameter.
Claim 6
Dependent Claim
21 words
A coaxial cable according to claim 4 wherein the wall thickness of said tubular metallic sheath is less than 0.020 inch.
Claim 7
Dependent Claim
21 words
A coaxial cable according to claim 1 wherein the cable has a minimum bend radius significantly less than 10 cable diameters.
Claim 8
Dependent Claim
27 words
A coaxial cable according to claim 1 wherein the ratio of the stiffness of the core to the stiffness of the tubular sheath is 10 or greater.
Claim 9
Dependent Claim
91 words
A coaxial cable comprising a core including at least one inner conductor and a low loss dielectric surrounding the inner conductor, and an electrically and mechanically continuous non-overlapping tubular metallic sheath of a diameter of at least 0.4 inches closely surrounding said core and being adhesively bonded thereto to form a structural composite with said cable having a minimum bend radius significantly less than 10 cable diameters, and the ratio of the radial compressive stiffness of the core to the radial compressive stiffness of the tubular sheath being greater than 5.
Claim 10
Dependent Claim
91 words
A coaxial cable comprising a core including at least one inner conductor and a low loss dielectric surrounding the inner conductor, and an electrically and mechanically continuous non-overlapping tubular metallic sheath of a diameter of at least 0.4 inches closely surrounding said core and being adhesively bonded thereto to form a structural composite with said cable having a minimum bend radius significantly less than 10 cable diameters, and the ratio of the radial compressive stiffness of the core to the radial compressive stiffness of the tubular sheath being greater than 5.
Claim 11
Dependent Claim
22 words
A coaxial cable according to claim 8 wherein said electrically and mechanically continuous tubular metallic sheath comprises a smooth-walled longitudinally welded tube.
Claim 12
Dependent Claim
21 words
A coaxial cable according to claim 9 wherein the wall thickness of said longitudinally welded tube is less than 0.020 inch.
Claim 13
Dependent Claim
35 words
A coaxial cable according to claim 1 or 8 wherein said tubular metallic sheath is adhesively bonded to said core by a thin continuous adhesive layer of a thickness of about 1 mil or less.
Claim 14
Dependent Claim
20 words
A coaxial cable according to claim 1 or 8 additionally comprising a protective outer jacket surrounding the tubular metallic sheath.
Claim 15
Dependent Claim
35 words
A coaxial cable according to claim 12 including a layer of adhesive disposed between said sheath and said protective outer jacket and serving to bond the protective jacket to the outer surface of the sheath.
Claim 16
Dependent Claim
110 words
A coaxial cable having a minimum bend radius significantly less than 10 cable diameters and comprising a core including at least one inner conductor and a low loss foam dielectric surrounding the inner conductor, an electrically and mechanically continuous longitudinally welded smooth-walled non-overlapping tubular metallic sheath of a diameter of at least 0.4 inches closely surrounding said core, and a thin continuous layer of adhesive disposed between said foam dielectric and said sheath and bonding the sheath to the foam dielectric to form a structural composite, and the ratio of the radial compressive stiffness of the core to the radial compressive stiffness of the tubular sheath being greater than 5.
Claim 17
Dependent Claim
110 words
A coaxial cable having a minimum bend radius significantly less than 10 cable diameters and comprising a core including at least one inner conductor and a low loss foam dielectric surrounding the inner conductor, an electrically and mechanically continuous longitudinally welded smooth-walled non-overlapping tubular metallic sheath of a diameter of at least 0.4 inches closely surrounding said core, and a thin continuous layer of adhesive disposed between said foam dielectric and said sheath and bonding the sheath to the foam dielectric to form a structural composite, and the ratio of the radial compressive stiffness of the core to the radial compressive stiffness of the tubular sheath being greater than 5.
Claim 18
Dependent Claim
116 words
A coaxial cable comprising a core including at least one inner conductor and a foam dielectric surrounding the inner conductor, and an electrically and mechanically continuous longitudinally welded smooth-walled non-overlapping tubular aluminum sheath having a wall thickness of less than 0.020 inch and the wall thickness being no greater than about 2.5 percent of its outer diameter, said tubular aluminum sheath closely surrounding said core and having its inner surface adhesively bonded throughout to the outer surface of said foam dielectric to form a structural composite of enhanced strength and bending properties, and the ratio of the radial compressive stiffness of the core to the radial compressive stiffness of the tubular sheath being greater than 5.
Claim 19
Dependent Claim
116 words
A coaxial cable comprising a core including at least one inner conductor and a foam dielectric surrounding the inner conductor, and an electrically and mechanically continuous longitudinally welded smooth-walled non-overlapping tubular aluminum sheath having a wall thickness of less than 0.020 inch and the wall thickness being no greater than about 2.5 percent of its outer diameter, said tubular aluminum sheath closely surrounding said core and having its inner surface adhesively bonded throughout to the outer surface of said foam dielectric to form a structural composite of enhanced strength and bending properties, and the ratio of the radial compressive stiffness of the core to the radial compressive stiffness of the tubular sheath being greater than 5.
Claim 20
Dependent Claim
117 words
A coaxial cable comprising a core including at least one inner conductor and a low loss foam dielectric surrounding the inner conductor, an electrically and mechanically continuous non-overlapping tubular metallic sheath closely surrounding said core, a thin continuous layer of adhesive disposed between said dielectric and said sheath and bonding the sheath to the foam dielectric, a protective outer jacket surrounding the tubular metallic sheath, and a layer of adhesive disposed between said sheath and said protective outer jacket and serving to bond the protective jacket to the outer surface of said sheath, and the ratio of the radial compressive stiffness of the core to the radial compressive stiffness of the tubular sheath being greater than 5.
Claim 21
Dependent Claim
117 words
A coaxial cable comprising a core including at least one inner conductor and a low loss foam dielectric surrounding the inner conductor, an electrically and mechanically continuous non-overlapping tubular metallic sheath closely surrounding said core, a thin continuous layer of adhesive disposed between said dielectric and said sheath and bonding the sheath to the foam dielectric, a protective outer jacket surrounding the tubular metallic sheath, and a layer of adhesive disposed between said sheath and said protective outer jacket and serving to bond the protective jacket to the outer surface of said sheath, and the ratio of the radial compressive stiffness of the core to the radial compressive stiffness of the tubular sheath being greater than 5.
References Cited (Backward Citations)
US3233036A
Cited
US3315025A
Cited
US3795540A
Cited
GB1222076A
Cited
US3529340A
Cited
US3927247A
Cited
US3639674A
Cited
US3662090A
Cited
US3681515A
Cited
US3971879A
Cited
DE2628946A1
Cited
US4104481A
Cited
US4327248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-18 | 1988-03-19 | 1988-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |