Method for cutting glass rod and cutting device for use therein

Details Method for cutting glass rod and cutting device for use therein Method for cutting glass rod and cutting device for use therein

2005-12-27

2005-12-27

Halpem, Mark (Department: 1731)

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

C065S112000, C065S113000, C065S271000, C065S374120, C065S433000

Reexamination Certificate

active

06978641

ABSTRACT:
To provide a method and apparatus for parting a glass rod without causing a crack or rupture at a grasped root portion of the glass rod in parting the glass rod for producing a glass preform.The apparatus for parting the glass rod in a predetermined length by grasping both ends of the glass rod11is characterized by comprising a supporting unit18of Y-character shape for supporting an intermediate position between both ends of the glass rod11from the lower part, the supporting unit18having a carbon sleeve composed of a cylindrical body that is rotatable around each of two leg portions making up a forked leg portion as an axis, the carbon sleeve being rotatable along with an axial movement of the glass rod.

REFERENCES:
patent: 5979189 (1999-11-01), Campion et al.
patent: 6196028 (2001-03-01), Humbert et al.
patent: 0 999 189 (2000-05-01), None
patent: 54-43914 (1979-04-01), None

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