US PATENT SUBCLASS 65 / 405
.~.~ Utilizing multiple crucibles or multiple feed streams of molten glass

Current as of: June, 1999
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65 /   HD   GLASS MANUFACTURING

376  DF  PROCESSES OF MANUFACTURING FIBERS, FILAMENTS, OR PREFORMS {18}
385  DF  .~ Process of manufacturing optical fibers, waveguides, or preforms thereof {29}
405.~.~ Utilizing multiple crucibles or multiple feed streams of molten glass

DEFINITION

Classification: 65/405

Utilizing multiple crucibles or multiple feed streams of molten glass:

(under subclass 385) Processes wherein molten glass is drawn into a fiber and a coating layer applied thereto from at least two containers or feed streams to form a contiguous optical fiber, waveguide, or preform.

(1) Note. Both containers may contain molten glass, in which case the resultant product is a glass coated glass optical fiber.

(2) Note. Containers may contain glasses of different refractive properties allowing the formation of gradient optical fibers.

(3) Note. Processes involving simultaneous drawing and coating forming a single fiber are proper for this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

444, for processes of making nonoptical glass coated glass fibers not involving simultaneous fiber forming and coating, and subclass 121 for other processes of blending separate streams of molten glass.