Single-based incadescent lamp construction

Details Single-based incadescent lamp construction Single-based incadescent lamp construction

1994-02-17

1995-09-26

O'Shea, Sandra L.

Electric lamp and discharge devices

With temperature modifier

Double wall, jacket or casing for envelope

313578, 439611, 439615, 439616, H01K 146

Patent

active

054536553

ABSTRACT:
To securely and reliably hold a high-voltage, for example service-line voge (110 V, 220 V) halogen incandescent lamp within an outer envelope (2), and forming an electrical connection terminal to a screw-in, or straight-wall tubular base sleeve (3a, 43a) of a standard base, for example of the E14 or of the B22d type, a punched sheet-metal element (5, 5', 5", 25, 48, 48') is clamped around a projecting end portion (1a, 20a, 41a, 41a') of the halogen incandescent lamp; the projecting end portion, preferably, is a pinch seal, and the punched sheet-metal element is formed with a lower part and an upper part, in which the upper part clamps around or against the pinch seal. The lower part is partly located within the base sleeve and mechanically, and preferably electrically secured thereto. The pinch seal, preferably, is formed with a transversely extending rib, and the clamping portion is formed with a matching locating notch to ensure axial retention of the halogen lamp in the base. The base sleeve, at the same time, can form a seat for the outer envelope (2, 20, 42) and for laterally projecting tabs (11) projecting from the punched sheet-metal element to facilitate locating and retaining the halogen lamp on the base.

REFERENCES:
patent: 3676835 (1972-07-01), Holly
patent: 4569005 (1986-02-01), Bergin et al.
patent: 5043624 (1991-08-01), Hirozumi et al.
patent: 5053935 (1991-10-01), Hellwig et al.
patent: 5146134 (1992-09-01), Stark et al.
patent: 5218261 (1993-06-01), Stark
patent: 5229683 (1993-07-01), Eckhardt et al.
patent: 5239226 (1993-08-01), Seredich et al.
patent: 5281889 (1994-01-01), Fields et al.

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