Uncemented Socketed Lamp
AssigneePatent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
InventorsJoachim Arndt, Uwe Fidler, Markus Herb
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Abstract
A light bulb (1) is provided at the end thereof with an adapter (13) made from ceramic polymer, fixed in a multi-piece socket base (12).
Claims14
An electric lamp, in particular a high-pressure discharge lamp, comprising a base mounted at one end and having an axis (A) and an inner vessel (2, 3) which is sealed in a vacuum-tight manner, said inner vessel being surrounded by an enveloping part (24), a base with electrical terminals bearing the inner vessel, on the one hand, and the enveloping part, on the other hand, characterized by the combination of the following features:
- a) the base has a base insulator (12) which is produced from an insulating material and has a central opening (11) with a surrounding collar (13;
- 63), in which the inner vessel is accommodated by means of a cementless fastening means;
- b) the base insulator has a fastening means for the enveloping part;
- c) the enveloping part has, at the base end, an opening, a means for fastening it to the base insulator being located in the vicinity of the opening;
- d) the enveloping part is fastened to the base insulator by means of a cementless mechanical holding mechanism incorporating the means from b) and c);
- e) the cementless fastening means is an adapter part, which consists of a ceramic material, in particular of polymer-ceramic;
- f) the base insulator and the adapter part have matching holding means, referred to below as indexing and mating indexing.
Dependencies are inferred from the claim text.