Electric lamp and discharge devices – With envelope – Having base and connector
Patent
1989-01-23
1990-08-21
O'Shea, Sandra L.
Electric lamp and discharge devices
With envelope
Having base and connector
313 51, 362226, H01J 550, H01J 560
Patent
active
049509420
ABSTRACT:
To permit ready attachment of a pinch or press seal terminating a halogen incandescent lamp, particularly for automotive use, a base sleeve (9), for example of steel, is formed as a hollow cylinder having, at the end remote from the bulb, at least two spaced flange elements (28) extending radially inwardly of the sleeve and essentially at right angles to the axis of the lamp. A base plug element, formed as a solid body, for example of highly heat-resistant plastic material, is located projecting from the base sleeve, and positioned remote from the bulb. The essentially cylindrical solid body (29) is formed with a circumferential collar of smaller outside diameter, and separated from the remainder of the solid body by a circumferential ring groove. The collar (30) is subdivided into a plurality of circumferential projections (31, 32), at least two of said circumferential projections are formed with radially outwardly extending holding projections (33) which engage behind and around the flange elements of the base sleeve (9) upon relative rotation of the base sleeve and the plug element formed by the essentially cylindrical solid body ( 29). A metallic holder element (7) surrounds the pinch or press seal and has extending leg or apron portions which are metal-to-metal welded, for example spot-welded to the base sleeve (9).
REFERENCES:
patent: 4100448 (1978-07-01), Chipner et al.
patent: 4412273 (1983-10-01), Helbig et al.
patent: 4641056 (1987-02-01), Sanders et al.
patent: 4751421 (1988-06-01), Braun et al.
patent: 4769574 (1988-09-01), Nagasawa et al.
Braun Alfred
Helbig Peter
Steiner Hermann
O'Shea Sandra L.
Patent Treuhand Gesellschaft fur elektrische Gluhlampen
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