Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh

Osram Gesellschaft MIT Beschraenkter Haftung

Patent-treuhand-gesellschaft F. Elektrische Gluehlampen Mbh

Patent-treuhand-gesellschaft Fur Elektrisch Gluhlampen Mbh

Osram Ag

Karen Twesten

Andreas Hohlfeld

Jürgen Gräf

Anton Schlögl

Michael Hülsemann

Uwe Fidler

Hans Eisemann

Sascha Piltz

Anton Schogl

An assembly for an electric lamp with an elongated inner bulb, which is sealed at two ends, the inner bulb including a lamp axis, and a light-emitter being accommodated in the inner bulb, the inner bulb being surrounded by an outer bulb, wherein the outer bulb is substantially circular-cylindrical, and includes two parts, at least one part having a rounded-off, sealed first end, and the two parts each having an open second end, which ends are matched to one another in terms of diameter, and the parts being connected to one another in the region of the open end via a certain sealing path, the inner bulb being held in the outer bulb via two frame wires, which are passed out of the outer bulb between the two parts.

Component for an electric lamp with outer bulb

The elongate bulb () of the lamp, which defines a longitudinal axis (A), is closed at opposite ends by sealing parts (), with in each case one cap being fitted at one end, the cap having an electrical contact element () which is connected in an electrically conductive manner to a supply conductor () leading to a luminous means, the contact element being accommodated in a tubular extension () of the sealing part; the contact element () has an attachment part () which is directed inward toward the lamp interior and is equipped with at least two barbs () which are in contact with the tubular extension ().

Lamp which is closed on two sides

The lamp comprises a discharge vessel () which is closed off in a vacuum-tight manner and is arranged in an outer bulb (), a getter material being held on a support body inside the outer bulb (). The support body is a support strip () to which the getter material is applied, the support strip being bent in such a way that it is automatically held in the outer bulb () without the need for any auxiliary means.

Electric lamp with outer bulb and associated support body

The process comprises the provision of a discharge vessel () which is closed off on one side, fitting a second tube over part of the discharge vessel and evacuating and filling the volume of the outer bulb via a pumping hole, which remains open in the second extension part within the second tube. This pumping hole is only closed at the end by means of an operation which closes it by rolling.

Process for producing an electric lamp with outer bulb

A metal halide lamp has a ceramic discharge vessel with two ends ( ) which are closed off by sealing means which enclose a capillary tube ( ). An electrically conductive lead-through ( ) is passed in a vacuum-tight manner through a bore in the capillary tube ( ). The capillary tube ( ) comprises two sections ( ) which are arranged axially one behind the other, the diameter of the bore of the inner section amounting to at most 90% of the diameter of the bore in the outer section.

Metal halide lamp with ceramic discharge vessel

Method and device for determining the purity and/or pressure of gases

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Berlin, Germany

Karen Twesten