Patent · US Expired

Dual filament halogen cycle automotive-type incandescent lamp

US4492893A · kind A · utility

13Cited by

3References

5Claims

0Family size

Assignee

Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · DE

Inventors

Hermann Steiner · Herbrechtingen, DE
Walter Schonherr · Giengen an der Brenz, DE

Key dates

Filing date	Jun 30, 1982
Grant date	Jan 8, 1985
Priority date	—
Expiry date	Jun 30, 2002

Classification

Technology area (CPC H)Electricity
CPC primaryH01K1/46
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

To provide for cementless attachment of a halogen cycle incandescent bulb ) to a positioning ring (2) formed with a flange-like extension (6a) and a generally sleeve-like projection (6), the press stem (5) of the lamp is placed in a stem holder (1) which has a sleeve-like portion, fitted between lugs (11) extending in the direction of the sleeve-like portion of the positioning ring, the lugs being welded to the stem holder at selected circumferential positions. Assembly, alignment and adjusment of this structure is facilitated with respect to structures in which lugs are bent-over at right angles from a base holder.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.