Body, especially lamp body, and method for producing a hermetic seal
AssigneeSchott AG
InventorsFritz Wintersteller, Helena Blümel, Robert Hettler, Chris Wanless
Life of this patent
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Abstract
A body, such as a lamp body, includes a tubular element. At least one conductor is introduced into the tubular element and a glass material surrounds the conductor. The glass material forms a seal between the tubular element and the conductor. The glass material comprises a sintered glass, such as a sintered glass ring, and may completely surround the conductor.
Claims20
A body, comprising:
- a tubular element made of a glass or a glass-ceramic material;
- at least one conductor introduced into the tubular element;
- and
- at least one further glass material surrounding the at least one conductor and connected to the tubular element, the at least one further glass material forming a hermetic seal between the tubular element and the at least one conductor and the at least one further glass material comprising a sintered glass which completely surrounds the at least one conductor after being fused on and hermetically seals it with respect to the tubular element.
A method for producing a hermetic seal between a tubular element made of a glass or a glass-ceramic material for a lamp body and a conductor having a further glass material in the form of a sintered glass, the method comprising the following steps:
- grinding the further glass material to give a glass powder;
- forming granules from the glass powder;
- dry pressing the granules to form a glass ring;
- sintering the glass ring;
- providing the conductor with the glass ring;
- fusing the glass ring to the conductor;
- and
- hermetically sealing the conductor and the tubular element with the glass ring by fusing.
A lamp body for a lamp, comprising:
- a tubular element made of a glass or a glass-ceramic material;
- at least one conductor introduced into the tubular element;
- and
- at least one further glass material surrounding the at least one conductor and connected to the tubular element, the at least one further glass material forming a hermetic seal between the tubular element and the at least one conductor and being visibly different from the tubular element.
Dependencies are inferred from the claim text.