Use of buffer tube coupling coil to prevent fiber retraction

Details Use of buffer tube coupling coil to prevent fiber retraction Use of buffer tube coupling coil to prevent fiber retraction

2007-01-09

2007-01-09

Doan, Jennifer (Department: 2874)

Optical waveguides

Optical transmission cable

C385S101000, C385S102000, C385S103000, C385S109000

Reexamination Certificate

active

11041373

ABSTRACT:
A method of installing a cable including at least one communication element, such as an optical fiber, disposed in a buffer tube and a surrounding jacket. The method includes the steps of exposing a portion of the buffer tube over a predetermined length and forming the exposed portion of the buffer tube into a coupling coil having at least one loop. The cable installation method prevents fiber retraction in cable terminations by utilizing at least one coupling coil formed from the exposed buffer tube and advantageously yields coupling coil terminations with small diameter coils, requiring less cable for more efficient installation, and further provides for the coupling coil to be located within a splice closure for more visually pleasing terminations. Preferably, coupling coils are formed at each end of the cable and located in splice enclosures.

REFERENCES:
patent: 6379166 (2002-04-01), Hagarty et al.
patent: 6459837 (2002-10-01), Fitz et al.
patent: 6909829 (2005-06-01), Register et al.
patent: 1359109 (2003-11-01), None
Patent Abstracts of Japan Publication No. 2002311315, Oct. 23, 2002; Kyushu Uchida Tanko K.K.
Optical Fiber Cables for Residential and Business Premises; Hogari, et al.; XP-000750659, vol. 16, No. 2, Feb. 1998.

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