Coaxial cable having enhanced handling and bending characteristics
First Claim
1. 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.
4 Assignments
0 Petitions
Reexamination
Accused Products
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.
44 Citations
16 Claims
- 1. 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.
- 8. 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.
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14. 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.
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15. 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.
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16. 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.
Specification