Composite fiber optic distribution cable

• US 5,913,003 A
• Filed: 01/10/1997
• Issued: 06/15/1999
• Est. Priority Date: 01/10/1997
• Status: Expired due to Fees

• Current Assignee: Fitel USA Corporation (Furukawa Electric Company Limited)
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Hancock, David Shepherd, van den Heuvel, Fons, Shinnick, William J., Arroyo, Candido John
• Primary Examiner(s): NGO, HUNG NHAT
• Application Number:
  US08/781,338
• Time in Patent Office: 886 Days
• Field of Search: 385/100-114
• US Class Current: 385/101
• CPC Class Codes: G02B 6/4415 Cables for special applications G02B6/4429, G02B6/4439, G02B6/4479 take precedence
• CPC Class Codes: G02B 6/4416 Heterogeneous cables
• CPC Class Codes: G02B 6/443 Protective covering
• CPC Class Codes: G02B 6/4431 with provision in the protective covering, e.g. weak line, for gaining access to one or more fibres, e.g. for branching or tapping break-out terminations G02B6/4471
• CPC Class Codes: G02B 6/4436 Heat resistant
• CPC Class Codes: G02B 6/44384 the means comprising water blocking or hydrophobic materials G02B6/4439, G02B6/4479 take precedence

Abstract

A fiber optic distribution cable including, in one aspect, a core tube with at least one optical fiber, at least one electric power conducting member extending alongside the core, a contiguous layer formed of a plurality of strength members, and a plastic jacket. In another aspect, the cable includes a core of at least one optical fiber member and at least one electrical power conducting member encased in a strength member contiguous layer and a plastic outer jacket. Both embodiments include water locking means.

Claims

1. A composite fiber optic distribution cable having a longitudinal axis, comprising:

a longitudinally extending central core tube encasing at least one longitudinally extending optical fiber;

at least one first electrical power conducting member extending alongside said core tube;

a plurality of non-metallic strength members arrayed about said core tube, said strength members being wrapped helically about said core tube; and

an outer jacket encasing said plurality of strength members.

2. The composite cable of claim 1, further comprising at least one waterblocking means within said core tube.

3. The composite cable of claim 2, wherein said waterblocking means is a gel, a waterblocking yarn, or a waterblocking tape.

4. The composite cable of claim 1, further comprising at least one second electrical power conducting member extending alongside said core tube, on the opposite side of the cable longitudinal axis from said at least one first electrical power conducting member.

5. The composite cable of claim 1, comprising at least one twisted pair of electrical power conducting members extending alongside said core tube.

6. The composite cable of claim 1, further comprising a second strength jacket formed of a plurality of strength members, helically wrapped in the opposite direction from said first strength jacket.

7. The composite cable of claim 1, further comprising at least one waterblocking member within said outer jacket.

8. The composite cable of claim 1, wherein said outer jacket is flame retardant so that said composite cable can be used as a plenum cable.

9. A composite fiber optic distribution cable having a longitudinal axis, comprising:

a longitudinally extending central core tube encasing at least one longitudinally extending optical fiber;

at least one first electrical power conducting member extending alongside said core tube;

a plurality of non-metallic strength members arrayed about said core tube so as to form a first strength jacket about said core tube, said strength members being made of fiberglass or poly (p-phenyleneterephthalamide); and

an outerjacket encasing said plurality of strength members.

10. A composite fiber optic distribution cable having a longitudinal axis comprising:

a longitudinally extending central core tube encasing at least one longitudinally extending optical fiber;

at least one first electrical power conducting member extending alongside said core tube;

a plurality of non-metallic strength members contiguously arrayed about said core tube so as to form a first strength jacket about said core tube, at least one of said strength members being in physical contact with said at least one power conducting member;

wherein said strength members form a contiguous layer of individual strength members about said core tube; and

an outer jacket encasing said plurality of strength members.

11. The composite cable as claimed in claim 10 and further comprising at lest a second electrical power conducting member extending alongside said core tube, on the opposite side of the cable longitudinal axis from said at least one first electrical power conducting member;

and

wherein said first and second electrical power conducting members are incorporated into said contiguous layer as elements thereof.