Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Optical fiber – waveguide – or preform
Reexamination Certificate
2007-03-20
2007-03-20
Eashoo, Mark (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Optical fiber, waveguide, or preform
C264S103000, C264S177170, C264S209200, C264S339000, C264S248000
Reexamination Certificate
active
10403028
ABSTRACT:
A solid-stranding method and apparatus for forming optical cables. Solid-stranding combines buffering and stranding operations, as well as performs the stranding operation while the flextubes are still hot so that they adhere together without additional binders. Optical fibers and/or wires are supplied to an extruder which forms flextubes around individual ones or groups of the optical fibers and/or wires. A central element may be supplied to, and go through, the center of the extruder. A rotating pulling device, such as a caterpillar, helically or in an SZ-manner solid-strands the flextubes around the central element—or solid-strands the flextubes to themselves when no central element is present—as the flextubes cool down. That is, solid-stranding includes buffering and stranding operations that are performed together without a water cooling stage therebetween. Thus, the flextubes adhere together, and may adhere to the central member, thereby forming a solid-stranded composite core. The solid-stranded composite core then may be jacketed by passing through another extruder, or may be used without a jacket, thereby forming a solid-stranded flextube unit from which individual flextubes easily may be split.
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Draka Comteo B.V.
Eashoo Mark
Sughrue & Mion, PLLC
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