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US 10,197,334 B2Granted
Dental furnace
AssigneeIvoclar Vivadent AG
InventorsGottfried Rohner, Rudolf Jussel
Life of this patent
Estimating the term…
Abstract
In a dental furnace having a firing chamber (12) with a base and at least one receiving portion for dental restoration parts (40). The receiving portion has a plurality of support elements (26) that are arranged adjacent to one another and in particular have the same thickness, wherein said support elements (26) support the dental restoration part (40) during the firing process.
Claims39
A dental furnace comprising
- a firing chamber comprising
- side walls, a top wall and a stationary base having at least one receiving section for dental restoration parts, the receiving section having an open top,
- wherein the at least one receiving section comprises a plurality of support elements disposed in close-packing arrangement to provide clearance between the support elements, wherein the clearance between the support elements corresponds to an amount of thermal expansion of the support elements upon heating from room temperature to a maximum of 1800° C., such that the support elements contact one another upon thermal expansion,
- wherein the receiving section comprises a solid bottom, the plurality of support elements are disposed on and in contact with the solid bottom of the receiving section,
- wherein at least some of said plurality of support elements form a common support plane for the dental restoration part,
- wherein each support element comprises a substantially plane surface,
- wherein the support elements are temperature-resistant at a temperature above 1600° C.
4 more elements
A dental furnace comprising
- a firing chamber, wherein the firing chamber comprises
- side walls, a top wall and a stationary base having at least one receiving section for dental restoration parts,
- wherein the at least one receiving section comprises a plurality of support elements disposed in close-packing arrangement to provide clearance between the support elements, wherein the clearance between the support elements corresponds to an amount of thermal expansion of the support elements upon heating from room temperature to a maximum of 1800° C., such that the support elements contact one another upon thermal expansion,
- wherein at least some of said support elements form a common support plane for the dental restoration part,
- wherein each support element comprises a substantially plane surface, and
- wherein the receiving section comprises a solid bottom, the plurality of support elements are disposed on and in contact with the solid bottom of the receiving section,
- wherein a width, a length, or both the width and length of each support element is greater than a height thereof,
- wherein the support elements are temperature-resistant at a temperature above 1600° C.
5 more elements
A dental furnace comprising
- a firing chamber comprising
- side walls, a top wall and a stationary base having at least one receiving section for dental restoration parts, the receiving section having an open top,
- wherein the at least one receiving section comprises a plurality of support elements, wherein no gap exists between adjacent support elements,
- wherein the receiving section comprises a solid bottom, the plurality of support elements are disposed on and in contact with the solid bottom of the receiving section,
- wherein at least some of said plurality of support elements form a common support plane for the dental restoration part,
- wherein each support element comprises a substantially plane surface,
- wherein the support elements are temperature-resistant at a temperature above 1600° C.
4 more elements
Dependencies are inferred from the claim text.