Automotive lamp bulb with alignment bead

Details Automotive lamp bulb with alignment bead Automotive lamp bulb with alignment bead

1997-06-04

1999-09-07

Day, Michael

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

For filament

313272, 313315, 313578, 313579, H01K 118

Patent

active

059491817

ABSTRACT:
An automotive lamp bulb is provided that is easy to assemble. A glass bulb has a tip with a short projection at its upper end. A common lead wire is secured in a neck portion of the glass bulb with the aid of a bead. The bead makes it possible to shorten the upper end of the glass bulb. The use of the bead also makes it easier to align the common lead wire with the neck portion. Because the bead is interposed therebetween, the common lead wire is allowed to slide in relation to the glass bulb, thus making it possible to use inexpensive hard glass. Consequently, an inexpensive and compact automotive lamp bulb can be easily manufactured.

REFERENCES:
patent: 3497753 (1970-02-01), Huston, Jr.
patent: 3872560 (1975-03-01), Bock
patent: 4801845 (1989-01-01), Kiesel
patent: 5270609 (1993-12-01), Smith et al.

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