Double-laterally-wound two-core parallel extrafine coaxial cable

• US 20030024728A1
• Filed: 06/05/2002
• Published: 02/06/2003
• Est. Priority Date: 07/25/2001
• Status: Active Grant

• Current Assignee: Hitachi Cable Limited (Proterial Ltd.)
• Original Assignee: Hitachi Cable Limited (Proterial Ltd.)
• Inventors: Ueno, Satoshi, Yamamoto, Yuuki, Tanaka, Hiroo
• Granted Patent: US 6,677,534 B2
• Time in Patent Office: Days
• US Class Current: 174/113R
• CPC Class Codes: H01B 11/203 forming a flat arrangement

Abstract

A double-laterally-wound two-core parallel extrafine coaxial cable is composed of two cores having internal conductors (2a, 2b) whose outer peripheries are covered with insulators (3a, 3b) and disposed in parallel with each other, a first laterally-wound shield (5) applied to the outer periphery of the two cores (4a, 4b), a second laterally-wound shield (6) applied to the outer periphery of the first laterally-wound shield in a direction opposite to that of the first laterally-wound shield, a composite tape (9), which is composed of a plastic tape (7) having a vapor-deposited metal layer formed on one surface thereof, wound around the outer periphery of the second laterally-wound shield such that the vapor-deposited metal layer faces the second laterally-wound shield, and a jacket (10) covering the outer periphery of the composite tape. With this arrangement, there is provided a two-core parallel extrafine coaxial cable longitudinally provided with a vapor-deposited tape that is excellent in bending characteristics and has a high shield effect and an improved shield strip property.

Claims

1. A double-laterally-wound two-core parallel extrafine coaxial cable, comprising:

two cores having internal conductors whose outer peripheries are covered with insulators and disposed in parallel with each other;

a first laterally-wound shield applied to the outer periphery of the two cores;

a second laterally-wound shield applied to the outer periphery of the first laterally-wound shield in a direction opposite to that of the first laterally-wound shield;

a composite tape, which comprises a plastic tape having a vapor-deposited metal layer formed on one surface thereof, wound around the outer periphery of the second laterally-wound shield such that the vapor-deposited metal layer faces the second laterally-wound shield; and

a jacket covering the outer periphery of the composite tape.

5. A double-laterally-wound two-core parallel extrafine coaxial cable 1 according to any of claims 1 to 4, wherein the internal conductors of the cores have an outside diameter of about 0.13 mm or less and an outside diameter of 1.0 mm or less in a long axis direction when the cable is covered with the jacket.

6. A double-laterally-wound two-core parallel extrafine coaxial cable according to any of claims 1 to 5, wherein vapor-deposited metal layer formed on the composite film comprises one of silver and copper and has a thickness of 0.1 μ

m or more.

2. A double-laterally-wound two-core parallel extrafine coaxial cable, comprising:

two cores having internal conductors whose outer peripheries are covered with insulators and disposed in parallel with each other;

a first laterally-wound shield applied to the outer periphery of the two cores;

a second laterally-wound shield applied to the outer periphery of the first laterally-wound shield in a direction opposite to that of the first laterally-wound shield;

a composite tape, which comprises a plastic tape having vapor-deposited metal layers formed on both the surfaces thereof, wound around the outer periphery of the second laterally-wound shield; and

a jacket covering the outer periphery of the composite tape.

3. A double-laterally-wound two-core parallel extrafine coaxial cable, comprising:

two cores having internal conductors whose outer peripheries are covered with insulators and disposed in parallel with each other;

a first laterally-wound shield applied to the outer periphery of the two cores;

a second laterally-wound shield applied to the outer periphery of the first laterally-wound shield in the same direction as that of and at a pitch different from that of the first laterally-wound shield;

a composite tape, which comprises a plastic tape having a vapor-deposited metal layer formed on one surface thereof, wound around the outer periphery of the second laterally-wound shield such that the vapor-deposited metal layer faces the second laterally-wound shield; and

a jacket covering the outer periphery of the composite tape.

4. A double-laterally-wound two-core parallel extrafine coaxial cable, comprising:

two cores having internal conductors whose outer peripheries are covered with insulators and disposed in parallel with each other;

a first laterally-wound shield applied to the outer periphery of the two cores;

a second laterally-wound shield applied to the outer periphery of the first laterally-wound shield in the same direction as that of and at a pitch different from that of the first laterally-wound shield;

a composite tape, which comprises a plastic tape having vapor-deposited metal layers formed on both the surfaces thereof, wound around the outer periphery of the second laterally-wound shield; and

a jacket covering the outer periphery of the composite tape.