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US 6,810,691 B2Granted
Method for making glass tubing with multiple bores
AssigneeCorning Incorporated
InventorsJames Gerard Fagan, David J. Gokey, Nikki J. Russo
Life of this patent
Estimating the term…
Abstract
A method of making glass tubing includes assembling together a first glass rod having at least one bore and a second glass rod having at least one bore to form a single glass unit, shaping an outer surface of the glass unit to a desired cross-section, and drawing the glass unit to form a glass tubing having a predetermined outer and inner dimension.
Claims22
A method of making glass tubing, comprising:
- assembling together a first glass rod having at least one bore and a second glass rod having at least one bore to form a single glass unit;
- shaping an outer surface of the glass unit to a desired cross-section;
- and
- drawing the glass unit to form a glass tubing having a predetermined inner and outer dimension.
1 more element
A method of making glass tubing, comprising:
- assembling together a first glass rod having at least one bore and a second glass rod having at least one bore to form a single glass unit;
- shaping an outer surface of the glass unit to a desired cross-section;
- inserting the glass unit into an outer clad glass tube to form a tube assembly;
- and
- drawing the tube assembly to form a glass tubing having a predetermined inner and outer dimension.
2 more elements
Dependencies are inferred from the claim text.