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1. (WO2019046676) CONVOYEUR À GALETS EN CÉRAMIQUE PERFECTIONNÉ ET PROCÉDÉ DE MESURE
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

CLAIMS

What is claimed is:

1. A roller hearth furnace in an apparatus for the thermal strengthening of glass sheets, the furnace comprising a ceramic roller bed having a deviation from a plane of not more than 500 micrometers over an area of no less than 1 square meter.

2. The roller hearth furnace according to claim 1 wherein the ceramic roller bed has a deviation from the plane of not more than 300 micrometers over the area of no less than 1 square meter.

3. The roller hearth furnace according to claim 1 wherein the ceramic roller bed has a deviation from the plane of not more than 200 micrometers over the area of no less than 1 square meter.

4. The roller hearth furnace according to claim 1 wherein the ceramic roller bed has a deviation from the plane of not more than 100 micrometers over the area of no less than 1 square meter.

5. The roller hearth furnace according to claim 1 wherein the ceramic roller bed has a deviation from the plane of not more than 80 micrometers over the area of no less than 1 square meter.

6. The roller hearth furnace according to any of claims 1-5 wherein rollers of the

ceramic roller bed have a diameter not more than 75 mm.

7. The roller hearth furnace according to any of claims 1-5 wherein rollers of the

ceramic roller bed have a diameter not more than 50 mm.

8. The roller hearth furnace according to any of claims 1-7 wherein the rollers of the ceramic roller bed have a length of not less than 1 meter.

The roller hearth furnace according to any of claims 1-7 wherein the rollers of the ceramic roller bed have a length of not less than 1.5 meters.

The roller hearth furnace according to any of claims 1-7 wherein the rollers of the ceramic roller bed have a length of not less than 2 meters.