Preconnectorized fiber optic cable assembly

• US 20080175548A1
• Filed: 01/23/2007
• Published: 07/24/2008
• Est. Priority Date: 01/23/2007
• Status: Abandoned Application

• Current Assignee: Corning Cable Systems LLC (Corning Incorporated)
• Original Assignee: Corning Cable Systems LLC (Corning Incorporated)
• Inventors: Lewallen, Christopher Paul, Knecht, Dennis Michael, Luther, James Phillip
• Application Number:
  US11/656,912
• Publication Number:
  US 20080175548A1
• Time in Patent Office: Days
• US Class Current: 385/100
• CPC Class Codes: G02B 6/4473 Three-way systems
• CPC Class Codes: G02B 6/4475 with provision for lateral branching G02B6/4431 takes precedence

Abstract

A cable assembly configured to be deployed in a fiber optic communications network includes a pulling grip body disposed at an upstream end of the cable assembly and a preconnectorized distribution cable having a plurality of optical fibers and at least one strength member. The pulling grip body includes a pulling loop that is mechanically coupled to the strength member to permit a high tensile load to be transferred to the distribution cable without inducing relative movement between the cable elements. The pulling grip body is preferably formed by overmolding the pulling loop and the strength member with a flexible encapsulant material. At least one multifiber connector is terminated to optical fibers of the distribution cable at the upstream end. The pulling grip assembly and the preconnectorized distribution cable have a low profile capable of being pulled through a conduit.

Claims

1. A cable assembly comprising:

a distribution cable having a plurality of optical fibers within an outer jacket;

at least one connector terminated on ends of pre-selected optical fibers of the plurality of optical fibers and positioned adjacent one end of the cable; and

at least one tap location positioned along the distribution cable.

2. A cable assembly according to claim 1, further comprising a pulling grip assembly functionally coupled to at least one strength member of the distribution cable on the one end having the at least one connector, the pulling grip assembly being operable to transfer a tensile load generated by a cable pulling force to the distribution cable through the at least one strength member.

3. A cable assembly according to claim 2, wherein the pulling grip assembly comprises a pulling grip body having a pulling loop and wherein the pulling loop is mechanically coupled to the at least one strength member of the distribution cable.

4. A cable assembly according to claim 3, wherein the pulling grip body is formed by overmolding a flexible encapsulant material around the pulling loop and the at least one strength member of the distribution cable.

5. A cable assembly comprising:

a preconnectorized distribution cable having a plurality of optical fibers and at least one strength member encased within an outer jacket, the distribution cable having at least one connector terminated on optical fibers of the distribution cable adjacent one end of the cable; and

a pulling grip assembly mechanically coupled to the at least one strength member of the distribution cable on the one end having the at least one connector, the pulling grip assembly being operable to transfer a tensile load generated by a cable pulling force to the distribution cable through the at least one strength member.

6. A cable assembly according to claim 5, wherein the preconnectorized distribution cable further comprises at least one tap location along the distribution cable.

7. A cable assembly according to claim 5, wherein the pulling grip assembly comprises a pulling grip body having a pulling loop and wherein the pulling loop is mechanically coupled to the at least one strength member of the distribution cable.

8. A cable assembly according to claim 7, wherein the pulling grip body is formed by overmolding a flexible encapsulant material around the pulling loop and the at least one strength member of the distribution cable.

9. A cable assembly according to claim 5, wherein the pulling grip assembly comprises:

a pulling grip body disposed at a proximal end of the pulling grip assembly;

a base tap body disposed at a distal end of the pulling grip assembly, and

at least one intermediate tap body disposed medially between the base tap body and the pulling grip body, each intermediate tap body having a tether containing optical fibers of the distribution cable and a connector terminated on the optical fibers.

10. A cable assembly according to claim 9, wherein the one end of the distribution cable is configured to be coiled with the base tap body and a plurality of intermediate tap bodies positioned side-by-side and with the tethers having an equal length such that the connectors are routed about the same distance from the base tap body and the plurality of intermediate tap bodies to a patch panel.

11. A cable assembly according to claim 9, wherein the one end of the distribution cable is configured to be coiled with the base tap body and a plurality of intermediate tap bodies staggered apart and with the tethers having an unequal length such that the connectors are routed different distances from the base tap body and the plurality of intermediate tap bodies to a patch panel.

12. A cable assembly according to claim 9, wherein the pulling grip body includes a pulling loop mechanically coupled to the at least one strength member of the distribution cable, and the base tap body includes a tether containing optical fibers of the distribution cable and a connector terminated on the optical fibers.

13. A cable assembly according to claim 9, wherein the pulling grip body is formed by overmolding a flexible encapsulant material around the at least one strength member of the distribution cable and wherein the base tap body and the at least one intermediate tap body are formed by overmolding a flexible encapsulant material around the distribution cable and the tether.

14. A cable assembly according to claim 9, further comprising a protective sleeve positioned over the pulling grip body, the base tap body, the at least one intermediate tap body, the tether and the connectors, the protective sleeve having a first end secured to the pulling grip body and a second end secured to the base tap body.

15. A cable assembly according to claim 14, wherein the protective sleeve is a woven fabric material made of a nylon mesh.

16. A cable assembly according to claim 5, wherein the pulling grip assembly comprises:

a pulling grip body disposed at a proximal end of the pulling grip assembly, the pulling grip body having a pulling loop mechanically coupled to the at least one strength member of the distribution cable; and

a furcation body disposed at a distal end of the pulling grip assembly, the furcation body having at least one tether containing optical fibers of the distribution cable and a multifiber connector terminated on the optical fibers.

17. A cable assembly according to claim 16, wherein the pulling grip body is formed by overmolding a flexible encapsulant material around the at least one strength member of the distribution cable and wherein the furcation body is formed by overmolding a flexible encapsulant material around the distribution cable and the at least one tether.

18. A cable assembly according to claim 16, further comprising a protective sleeve positioned over the pulling grip body, the furcation body, the at least one tether and the multifiber connector, the protective sleeve having a first end secured to the pulling grip body and a second end secured to the furcation body.

19. A cable assembly according to claim 5, wherein the pulling grip assembly transfers the tensile load to the distribution cable without inducing relative movement between the outer jacket and the optical fibers.

20. A cable assembly comprising:

a preconnectorized distribution cable having a plurality of optical fibers and at least one strength member encased within an outer jacket, the distribution cable terminating at one end in a plurality of tethers attached about a plurality of tap bodies;

a pulling grip assembly at the one end of the distribution cable coupled to the at least one strength member of the distribution cable; and

at least one tap location along the distribution cable upstream of the one end and including at least one tether.

21. A cable assembly according to claim 20, wherein each of the plurality of tab bodies have a single connectorized tether attached thereto.

22. A fiber optic communications network comprising:

a fiber distribution hub (FDH) having a plurality of preconnectorized optical fibers;

a first cable assembly comprising a preconnectorized primary distribution cable and a first pulling grip assembly at an upstream end of the first cable assembly, the first pulling grip assembly mechanically coupled to the primary distribution cable by a pulling grip body strain relieved to at least one strength member of the primary distribution cable, the preconnectorized primary distribution cable being interconnected with the plurality of preconnectorized optical fibers of the FDH and having at least one intermediate tap location along the length of the primary distribution cable; and

a second cable assembly comprising a preconnectorized secondary distribution cable and a second pulling grip assembly at an upstream end of the second cable assembly, the second pulling grip assembly mechanically coupled to the secondary distribution cable by a pulling grip body strain relieved to at least one strength member of the secondary distribution cable, the preconnectorized secondary distribution cable being interconnected with the preconnectorized primary distribution cable at the intermediate tap location.