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US 6,140,769 AGranted
Electric incandescent lamp with sintered body glass plate
AssigneeU.S. Philips Corporation
InventorsUrsula Bruggemann, Wilfried L. Kohlmann, Jacques M.J. Geboers, Antonius J.M. Van Hees
Life of this patent
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Abstract
The electric incandescent lamp has a sintered glass plate through which current conductors and a metal tube extend. An incandescent body is connected to the current conductors aligned with respect to the plate. A glass bulb is present over the incandescent body, secured to the plate in a gastight manner by means of enamel. A water getter and a heavy gas at an elevated pressure are present inside the glass bulb.
Claims13
An electric incancescent lamp comprising:
- a moulded glass plate (1) which is connected in a gastight manner to current conductors (2) and to a metal tube (3) which extend through said plate;
- an incandescent body (4) occupying a predetermined position relative to the moulded plate (1) and connected to the current conductors (2);
- a glass bulb (5) around the incandescent body (4), connected in a gastight manner to the moulded plate (1) by means of enamel (6);
- a filling gas having a pressure of at least 1 bar inside the bulb (5),
- said metal tube (3) having a gastight seal (30) outside the bulb (5),
- characterized in that the glass plate (1) is a sintered body which has a composition which corresponds to the composition of the glass of the bulb (5).
3 more elements
Dependencies are inferred from the claim text.