| US 7,469,087 B2 | ||
| Optical tube assembly having a dry insert and methods of making the same | ||
| Alan T. Parsons, Newton, N.C. (US); Kenneth D. Temple, Jr., Newton, N.C. (US); Jody L. Greenwood, Hickory, N.C. (US); and Jason C. Lail, Kakegawa (Japan) | ||
| Assigned to Corning Cable Systems LLC, Hickory, N.C. (US) | ||
| Filed on Jul. 26, 2007, as Appl. No. 11/881,280. | ||
| Application 11/881280 is a division of application No. 10/847807, filed on May 18, 2004, granted, now 7,254,302. | ||
| Application 10/847807 is a continuation in part of application No. 10/661204, filed on Sep. 12, 2003, granted, now 7,336,873. | ||
| Application 10/661204 is a continuation in part of application No. 10/326022, filed on Dec. 19, 2002, granted, now 6,970,629. | ||
| Prior Publication US 2007/0269172 A1, Nov. 22, 2007 | ||
| Int. Cl. G02B 6/44 (2006.01) | ||
| U.S. Cl. 385—100 [385/102] | 12 Claims |
| 1. An optical tube assembly comprising:
a tube;
at least one optical waveguide, the optical waveguide being disposed in the tube;
at least one dry insert, the at least one dry insert having a first layer, a second layer, and a plurality of water-swellable
filaments, the first and second layers being attached together at least along the longitudinal edges thereof, thereby forming
at least one compartment between the first and second layers, wherein the plurality of water-swellable filaments are generally
disposed in the at least one compartment, wherein the at least one dry insert is disposed within the tube and generally surrounds
the at least one optical waveguide.
|