General Electric Company

Milan R Vukcevich

Istvan Meszaros

Gyorgy Nagy

Walter K Brinn

Joseph Michael Ranish

John M Davenport

Thomas Frederick Soules

George E Sakoske

Elmer G Fridrich

Bernard W Rachel

Thomas H Yu

Charles W Cox

Ivan Berlec

Richard G Lynce

Jozsef Apagyi

Tamas Gal

Stephan Rungwerth

Robert J Arena

Wayne A Lasch

Non-sag tungsten wire

An inlead for an electric lamp formed of an alloy of tungsten and molybdenum. The inlead has a rate of thermal expansion or contraction approximating that of the glass forming the bulb. This minimizes the expansion/contraction mis-match stress between the two materials. In addition, the alloy composition functions to reduce oxidation and degradation of the lead.

Electric lamps containing electrical leads of a molybdenum and tungsten

The subject invention relates to a copper-steel composite wire suitable for use as inner lead wires in lamp applications. The subject copper-steel composite wire comprises a steel core having a thick copper cladding on the outside thereof such that the composite lead wire exhibits at least 30% IACS electrical conductivity. The application further relates to the use of the subject composite wire in incandescent lamp applications.

Copper-steel composite lead wire and use in incandescent filament

An improved high efficiency general service incandescent lighting unit is disclosed. The lamp has coaxial outer and inner envelopes. The inner envelope has a low voltage filament coaxially disposed therein, a halogen gas atmosphere and a fill-gas at a high pressure. The outer envelope has a coating of a light transmissive reflective infrared film on its inner surface. Further disclosed are various control systems for reducing a typical 120 v. A.C. voltage and applying the reduced A.C. or D.C. voltage across the low voltage filament within the inner envelope.

Higher efficiency incandescent lighting units

A multiple headlamp system for vehicles, comprising at least two individual lamps having their filaments connected in electrical series. This permits the use of shorter filaments and hence smaller diameter reflector lamps, without loss of optical control or reflector efficiency, for use in modern cars having low-profile front ends for providing improved aerodynamic streamlining. In a preferred embodiment, a vehicle is provided with two sets of headlamps, each set comprising a pair of individual headlamps each containing a filament at the focal point of the reflector for achieving maximum optical control, and means for connecting the filaments of each pair in electrical series across the vehicle's battery, one lamp of the pair being designed to provide a narrow-beam 'punch' light for distant viewing, and the other lamp of the pair being designed to provide a wide-angle beam 'spread' light for general viewing.

Multiple headlamp system

Growing community of inventors

University Heights, OH, United States of America

Milan R Vukcevich