Gte Products Corporation

Other

Gte Sylvania Incorporated

Arnold E Westlund, Jr

Raymond T Fleming

William G Thiry

Clarence D Puckett

Jeffrey Paul Buschmann

Lawrence R Fraley

John M Boyd

Emery G Audesse

David A Cox

Stuart K Denham

Carlos G Ochoa

German C Aguilar

Charles E Henkel

Freddie P Hughes

Paul B Reynolds

Owtis J Ragland, Jr, Deceased

A small volume, high wattage press sealed lamp having envelope, filament, internal leads, seal foils, external leads, and blades is disclosed. The small volume, high wattage press sealed lamp increased conductivity due to a flat faced external lead forming one of the foil welds. The external lead is butt welded to blade stock at ninety degrees forming a highly conductive bond.

Small volume, high wattage press sealed lamp

A double envelope electric lamp having an outer envelope, support frame, inner capsule, threaded base, center contact, is disclosed. The support frame is formed with hooked ends that lie in shall grooves formed through the threads formed on the lamp neck. The exterior arms abut the metal base when the metal base is threaded onto the outer envelope. By making the exterior arms with a heavy wire, the positioning accuracy may be increased, and surprisingly, the threading torque may be reduced.

Electric lamp with low torque threaded base

An oxygen detector for use in a double envelope lamp is described. The detector may be formed by nitriding a metal surface to produce a metal piece with a first visual color or state. The surface thickness is sufficient to exclude oxygen during normal assemble, but thin enough to change colors during lamp operation if oxygen is present.

Lamp with an oxygen detector

A lamp with re-enforced tubular base pins is disclosed. A less expensive, high quality, high wattage lamp may be formed with re-enforced tubular base pins. The lamp comprises a lamp envelope having an enclosed means for producing light, a light transmissive envelope, and at least two electrical connections, a ceramic lamp base for holding the lamp envelope, and the two tubular pins. Each pin comprises an electrically conductive tube having an exterior surface along which a compressive coupling may be made, and an interior surface defining an internal volume. A fill cement is positioned in the internal volume of each base pin at least along the portions opposite where compressive coupling may be made to the exterior surface of the pin.

Lamp with re-enforced tubular base pins

A improved projector lamp with an internal reflector may be made by forming the reflector from pure aluminum, or an aluminum alloy not including amounts of vaporizable materials. Anodized aluminum is not used. A pure aluminum reflector is mechanically polished and chemically etched to attain a high level of reflectivity. The quality of the surface finish is retained by enclosing the reflector in an oxygen free lamp. The high purity aluminum acts as a getter for oxygen, and other detrimental contaminants, thereby tending to extend the lamp life and maintain lamp output. Since aluminum is lighter weight than the previous reflector materials, the lamps do not suffer as much breakage during manufacture and shipping.

Internal lamp reflector

An improved projector lamp with an internal reflector may be made by forming the reflector from pure aluminum, or an aluminum alloy not including amounts of vaporizable materials. Anodized aluminum is not used. A pure aluminum reflector is mechanically polished and chemically etched to attain a high level of reflectivity. The quality of the surface finish is retained by enclosing the reflector in an oxygen free lamp. The high purity aluminum acts as a getter for oxygen, and other detrimental contaminants, thereby tending to extend the lamp life and maintain lamp output. Since aluminum is lighter weight than the previous reflector materials, the lamps do not suffer as much breakage during manufacture and shipping.

A multi-planar, one-piece wire insert for supporting a coil filament body in an electric incadescent lamp in which the wire insert includes a top leg disposed in a plane out of the main plane of the insert so as to permit the coil filament body, as wound, to fit (match) the insert directly without requiring alteration to the ends of the coil filament body and/or changing of the wound coil geometry.

Filament supporting multi-planar wire insert for electric incandescent

An electric incandescent lamp (e.g., tungsten-halogen) including a light-transmitting envelope having an internal curvilinear wall, a gas mixture within the envelope, at least two support rods extending within the envelope in a spaced-apart manner, at least one bridge member within the envelope and supported substantially between the two support rods, and an electrically conductive filament structure located within the envelope and suspended from the bridge member. At least one support member, secured to the bridge member and projecting therefrom and including a U-shaped end portion for engaging the curvilinear internal wall of the envelope, is utilized to provide both compressive and axial support for the bridge member and suspended filament structure. The support member is preferably a wireform comprised of molybdenum.

Electric lamp with bridge support member providing both compressive and

An electric lamp including a glass envelope having at least one conductive foil hermetically sealed within the press-sealed end portion thereof, the foil being electrically connected at one end to a side rod support wire which projects within the envelope's bulb portion to form part of the lamp's filament structure. A sound electrical connection between the support wire and conductive foil is attained by providing the end portion of the support wire with a relatively flat configuration and knurling a surface of this flattened end. This knurled surface, being welded to the foil, provides such a connection without the use of flux or the like. A method of making this lamp is also disclosed.

Electric lamp and method of making

An electric lamp (e.g., tungsten-halogen) wherein a glass bridge (31) is used and has the support wires (23) of the lamp's filament structure (13) passing therethrough. The support wires are indented (e.g., with V-shaped notches) on opposing sides thereof just below the bridge to permit movement of the portions of the support wires between the bridge and press-sealed end (17) of the lamp's envelope (11) during press-sealing, thereby substantially relieving stresses on the bridge (31) and possible breakage thereof as may occur if such wires were retained in a fixed, non-movable arrangement.

Electric lamp with stress relieving means

Spot lamp

A high temperature tungsten halogen lamp having improved lamp strength so as to reduce lamp breakage. The ceramic base for supporting the press sealed end of the lamp's envelope has a top thereof including a pair of upwardly projecting members that extend above the press sealed portion to contact the bulb portion of the lamp envelope (or capsule). These corner projecting members enable enhanced support while at the same time providing a pair of windows therebetween to enable sufficient heat dissipation (thus preventing excessively high lamp seal temperatures). In accordance with the method of the invention the envelope is cemented to the ceramic base in a two-step operation including firstly cementing the base below the projecting members to bind the base to the envelope's press sealed portion and thereafter cementing the projecting members to the envelope's bulb portion.

Tungsten halogen lamp with heat-dissipating base

Projection lamp reflector

An improved projection lamp unit including a glass reflector having a concave reflecting surface and a tungsten halogen lamp positioned within the concavity of the reflector. The concave reflecting surface of the reflector is provided with alternately disposed radially extending regions including a series of specular stripes in combination with alternately spaced regions of facets. Preferably four or five stripes and an associated four or five facet regions are provided.

Projection lamp unit

A spot lamp having a lens in the form of a curved member having an inner surface with a series of radially disposed flutes formed therein defining a fluted portion which surrounds a centrally disposed stippled portion. The flutes each extend linearly from a position adjacent the stippled portion outwardly to a position adjacent the outer edge of the curved member. The surfaces of the flutes are also stippled.

Growing community of inventors

Winchester, KY, United States of America

Arnold E Westlund, Jr