Illumination – Plural light sources – Diverse light generators
Reexamination Certificate
1999-11-23
2001-12-11
Husar, Stephen (Department: 2875)
Illumination
Plural light sources
Diverse light generators
C362S548000, C362S519000, C362S267000
Reexamination Certificate
active
06328455
ABSTRACT:
TECHNICAL FIELD
The invention relates to electric lamps and particularly to automobile lamps. More particularly the invention is concerned with the coupling structure of an automobile lamp.
BACKGROUND ART
Such an electric lamp is disclosed, for example, in the International Patent Application WO 97/25733. This laid-open application describes an electric incandescent lamp, in particular a motor vehicle headlight lamp, having an incandescent filament enclosed in a vitreous lamp bulb, and a lamp cap consisting of metal parts and plastic parts. The pinch foot, sealed in a gas-tight fashion, of the lamp bulb is fixed in a metal holder part which is, for its part, connected directly or via an intermediate ring to a metal, ringshaped support sleeve. The metal support sleeve is anchored in the plastic cap part, equipped with the electric terminals of the lamp, of the lamp cap. To mount the lamp in the opening, designed as a lampholder, of a reflector, the ring-shaped support sleeve has three reference noses which are arranged in one plane, are distributed equidistantly over the circumference of the support sleeve and engage in the lamp mounting opening of the reflector, and a press-on spring, acting radially outwards, which bears with a clamping fit against the edge of the lamp mounting opening of the reflector. Below the three reference noses, the support sleeve respectively has a point of contact with the edge of the lamp mounting opening of the reflector. One of these points of contact is formed by the press-on spring. The three reference noses are situated on the inner side of the reflector. The sealing of the lamp mounting opening, designed as a lampholder, of the reflector is performed by means of a silicone sealing ring which is arranged between the reflector outer side and the plastic cap part of the lamp cap. This lamp cap, constructed from metal parts and plastic parts, ensures, on the one hand, by means of its metal holder parts for the lamp bulb an exact adjustment of the position of the incandescent filament with respect to the reference plane defined by the three reference noses and, by means of its plastic cap part, adequate sealing of the lamp cap and the reflector against moisture. However, a burr, formed during the production of the reflector, on the outer edge of the lamp mounting opening of the reflector has an unfavorable influence on the mounting position of the lamp, and causes an undesired maladjustment of the incandescent filament with respect to the optical axis of the reflector.
DISCLOSURE OF THE INVENTION
An electric lamp may be made with a lamp cap and a transparent lamp bulb, and having at least one luminous means surrounded by the lamp bulb, the lamp cap having a metal holder part in which the lamp bulb is fixed, the lamp cap having a ring-shaped metal support sleeve connected to the holder part and a plastic cap part which is provided with the electric terminals of the lamp and in which the support sleeve is anchored, the support sleeve having three reference noses lying in a common plane arranged perpendicular to the ring axis, the reference noses serving to engage in an opening, designed as a lampholder, of a reflector, and the ring-shaped support sleeve having a press-on spring which acts radially outwards and serves to fix the lamp in the opening, designed as a lampholder, of the reflector, the press-on spring being arranged below a first reference nose ,characterized in that on its outer side, below the second and third reference nose, the ring-shaped support sleeve in each case has a depression or a cutout at a distance from the reference noses.
REFERENCES:
patent: 4412273 (1983-10-01), Helbig
patent: 4947294 (1990-08-01), Van Duyn et al.
patent: 5839818 (1998-11-01), Jannson et al.
patent: 5957569 (1999-09-01), Helbig et al.
patent: 6080019 (2000-06-01), Coushaine
patent: 6095866 (2000-08-01), Helbig et al.
patent: 6210021 (2001-04-01), Hlebig et al.
patent: 3426712 A1 (1986-01-01), None
patent: 3521962 A1 (1987-01-01), None
patent: 0 467 062 A2 (1992-01-01), None
patent: 1 539 667 (1979-01-01), None
patent: WO 97/25733 (1997-07-01), None
Husar Stephen
Meyer William E.
Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen MBH
Ton Anabel
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