Abstract: The tubular electric incandescent lamp has at its ends metal hoods, to which current supply conductors are secured. The metal hoods are accommodated in an insulator housing provided with an opening, through which a contact member extends to the exterior. The contact member is a metal strap with resilient tongues, which engage a metal hood behind a collar. The insulator housing has a tapering slot with a widened part, in which free end portions of the metal strap are enclosed. The unit of contact member and housing thus obtained is undetachably connected to the lamp in that it is axially slipped around the metal hood.

Abstract: A low-pressure discharge lamp includes a bulb and a pair of bases attached to the end portions of the bulb, respectively. Each base has a base body fixed to the end of the bulb and a pair of terminals attached to the periphery of the base body. The terminals have contact portions which project from the periphery of the base body and include contact surfaces extending parallel to the axis of the bulb and facing the same direction. The contact surfaces are located so as to contact a common plane.

Abstract: An adapter converts a bi-pin based fluorescent lamp to a recessed double contact based lamp. The adapter has a housing with pin receiving apertures therein adjacent to a central aperture. Each pin receiving aperture contains a contact which has a portion which frictionally engages a pin.

Abstract: An electric lamp including an insulative (e.g., plastic) base, an envelope located within the base and having a filament therein and a pair of conductors (e.g., nickel-iron alloy wires) projecting externally from the envelope, passing through the base and extending therefrom. Each conductor includes means (e.g., knurls) formed therein for removing undesirable surface material (e.g., oxide) from a respective contact located within a socket in which the lamp is positioned. Such removal, achieved during lamp insertion and eventual withdrawal, thus assures a sound electrical connection between the "cleaned" contact and a second lamp designed to replace the original. These features are particularly advantageous in the automotive field, especially that portion of the field involving taillight and similar assemblies.

Abstract: An adapter converts a bi-pin based fluorescent lamp to a recessed double contact based lamp. The adapter has a housing with pin receiving apertures therein adjacent to a central aperture. Each pin receiving aperture contains a contact which has a toothed portion which frictionally engages a pin, provides electrical contact and substantially prevents removal.

Abstract: An electric, incandescent lamp including an electrically insulating (e.g., plastic) base which is securedly positioned on the lamp's sealed end portion without the need for adhesives or the like. The base functions to securedly retain the lamp's lead-in wires (a total of four in a dual filament lamp) in a preestablished alignment externally of the lamp's sealed end (from which the wires project) to thereby assure positive electrical connection thereto when the lamp and base are inserted within a corresponding electrical socket. The invention is ideally suited for use in a tail light assembly for an automobile.

Abstract: A high pressure discharge lamp arrangement in which the support wire for the arc tube of the lamp has its end which is inserted in the open tubular electrode structure of the lamp expanded so that its external dimension more nearly equals the internal dimension of the tubular structure.

Abstract: The tubular electric incandescent lamp has at its ends (7,8) metal hoods (4), to which the current supply conductors (9,10) are secured. The metal hoods (4) are arranged in an insulator housing (5,6) provided with an opening (13), through which a contact member (11,12) extends to the exterior. The contact member (11,12) has a bifurcate part (19) which grips around the metal hood (4) behind a collar (17) at the said hood. The insulator housings (5,6) lock the contact members (11,12) against radial displacement. By the collar (17) and the insulator housing (6), the contact member (12) is undetachably connected to the metal hood (4). The lamp can be constructed so that the contact members (11,12) are displaceable in longitudinal direction between two extreme positions.