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AssigneeCorning Incorporated
InventorsAntoine Gaston Denis Bisson, Patrick Joseph Cimo, Thierry Luc Alain Dannoux, Ronan Tanguy
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An apparatus for making a profiled tubing includes a mandrel adapted for positioning proximate a tubing. The mandrel has a nozzle section with a select cross-sectional profile that will define a final cross-sectional profile of the tubing. The nozzle section has a feed chamber for receiving a gas and a porous circumferential surface through which the gas can be discharged to an exterior of the mandrel. The gas when discharged to the exterior of the mandrel forms a film of pressurized gas between the porous circumferential surface and the tubing. A method of forming a profiled tubing using the apparatus is disclosed. A sleeve formed from the profiled tubing is also disclosed.
An apparatus for making a profiled tubing, comprising:
A method of forming a profiled tubing, comprising:
A sleeve made of a glass material, the sleeve having a seamless wall, the wall having an inner surface with a surface roughness less than 1 μm and an outer surface with a surface roughness less than 1 μm, the wall having opposed flat sections, each of the flat sections having a flatness better than 50 μm on an area of 70×120 mm2.
Dependencies are inferred from the claim text.