Abstract: A vapor deposition source that includes a substantially vertical plate to which first and second filament posts are coupled. The vapor deposition source also includes a filament having a first end and a second end. The filament provides a substantially concentric source of electrons. The first end of the filament is connected to the first filament post and the second end of the filament is connected to the second filament post. The first end of the filament is substantially vertically aligned with the second end of the filament when the filament is connected to the first and second posts.

Abstract: Provided is an excimer lamp having a simple and small structure, which can be used in, for example, a refrigerator, and can emit ultraviolet light at a wavelength effective in disinfection processing without generating ozone in a surrounding atmosphere, without leaving gas impurities and moisture in an electrical discharge vessel, and without causing a steep illuminance decrease. A fluorescent substance is disposed on an inner face of the electrical discharge vessel for converting ultraviolet light emitted upon excimer electrical discharge of a light emitting gas to ultraviolet light having a longer wavelength. An inner electrode has a coil shape. A tight winding portion is formed at a certain area of the interior electrode which extends in the center axial direction of the interior electrode such that the coil is tightly wound in the tight winding portion. A getter is attached to the tight winding portion.

Abstract: In an electron tube including vibration absorbers for linear members such as filaments, a vibration absorbing means that is made of a vibration absorber with a large vibration absorption effect, has a simple configuration, and is attachable easily to filaments is provided. The vibration absorbing means is formed of a holder 231, a vibration absorber 241, and a getter shielding member 251. These three members are attached to a shielding electrode S overlying the front substrate 111 to dispose the vibration absorber 241 between the holder 231 and getter shielding member 251. The vibration absorber 241 is mounted to slide or rotate between the holder 231 and the getter shielding member 251. The vibration absorber 241 has an aperture 2413 in which the filament is engaged. The bottom (apex) of the aperture 2413 is formed eccentrically. The vibration absorber 241 is in line contact with the shielding electrode S, as shown in FIG. 3(c).

Abstract: The present invention relates to a lamp comprising a lamp vessel (101) having an inner diameter and an incandescent body (102) arranged in the lamp vessel and connected to current supply conductors (106). The lamp further comprises a filament (103) arranged around said incandescent body along at least half the length of said incandescent body, which filament has an outer diameter substantially equal to the inner diameter of the lamp vessel.

Abstract: An apparatus for producing light includes a chamber that has a plasma discharge region and that contains an ionizable medium. The apparatus also includes a magnetic core that surrounds a portion of the plasma discharge region. The apparatus also includes a pulse power system for providing at least one pulse of energy to the magnetic core for delivering power to a plasma formed in the plasma discharge region. The plasma has a localized high intensity zone.

Abstract: An improved support is provided for locating a lamp filament axially within a lamp sleeve. The illustrated support is a spiral coil that includes a small diameter center portion that makes contact with the filament. On either side of the filament-contacting portion, the coil opens up to larger diameters for contacting the inner wall of the quartz sleeve within which the filament is housed. The support thus appears H-shaped when viewed from the side. A lamp filament is also provided with expansion compensation sections at either end of a central section. The filament wire in the compensation sections is wound into coils having a greater diameter and also a greater spacing between windings, as compared to coil in the central section. The expansion compensation sections are preferably capable of compressing and thereby absorbing thermal expansion of the filament during operation, without shorting the filament across adjacent windings.

Abstract: The invention relates to an infrared radiation source having at least one electrical heat conductor situated in a long, two-ended casing tube made of quartz glass, the casing tube having at least one elevation made of quartz glass on its wall which faces the at least one heat conductor, which locally reduces the inner diameter of the casing tube. At least one heat conductor is designed as a heating coil. The casing tube has a constant outer diameter in the region of the heating coil, the elevation has a convex shape on its surface facing the heating coil, and the heating coil contacts the elevation only at the highest point of the elevation.

Abstract: The invention relates to a halogen incandescent lamp for operating on line voltage, at least comprising a hermetically sealed, cylindrical bulb (2) made from transparent material, a filling made from inert gas and a halogen additive, a luminous element (4), a current supply system, and a mount (5), which is formed from a single-piece support wire, one end region of which is bent away transversely to the lamp axis, and which retains the luminous element (4) in the vicinity of the end of the bulb (2) remote from the pinch, wherein a luminous element (4) bent virtually into a U-shape is arranged symmetrically relative to the lamp axis, the luminous element (4) is held twice by the mount (5) in the region of the portion of the luminous element (4) which is arranged transverse to the lamp axis, and one end of the mount (5) is fixed in a pinch (3).

Abstract: An improved support is provided for locating a lamp filament axially within a lamp sleeve. The illustrated support is a spiral coil that includes a small diameter center portion that makes contact with the filament. On either side of the filament-contacting portion, the coil opens up to larger diameters for contacting the inner wall of the quartz sleeve within which the filament is housed. The support thus appears H-shaped when viewed from the side. A lamp filament is also provided with expansion compensation sections at either end of a central section. The filament wire in the compensation sections is wound into coils having a greater diameter and also a greater spacing between windings, as compared to coil in the central section. The expansion compensation sections are preferably capable of compressing and thereby absorbing thermal expansion of the filament during operation, without shorting the filament across adjacent windings.

Abstract: The invention relates to a light bulb comprising a base BA to which a filament FIL is connected, which filament is intended to emit a luminous radiation and has turns arranged in spiraling fashion around an axis of revolution AX. According to the invention, the light bulb in addition comprises a plurality of hooks H1, H2, and H3, each being in contact with one of the turns of the filament, and being connected to the base BA by means of a support SUP. The invention enables to keep the filament FIL securely in position, which reduces the risk that several turns of said filament will come into contact with the support SUP, thus creating a destructive short-circuit.

Abstract: An electric bulb structure includes a housing, a base post extended into an inside of the housing from one end of the housing, a shade mounted on an opening of the housing, a first conductive wire and a second conductive wire each extended into the inside of the housing from an outside of the housing and each extended through the base post, a first filament having a first end connected to the first conductive wire, a second filament having a first end connected to the second conductive wire, and a third conductive wire having a first end connected to a second end of the first filament, and a second end connected to a second end of the second filament.

Abstract: An improved support is provided for locating a lamp filament axially within a lamp sleeve. The illustrated support is a spiral coil that includes a small diameter center portion that makes contact with the filament. On either side of the filament-contacting portion, the coil opens up to larger diameters for contacting the inner wall of the quartz sleeve within which the filament is housed. The support thus appears H-shaped when viewed from the side. A lamp filament is also provided with expansion compensation sections at either end of a central section. The filament wire in the compensation sections is wound into coils having a greater diameter and also a greater spacing between windings, as compared to coil in the central section. The expansion compensation sections are preferably capable of compressing and thereby absorbing thermal expansion of the filament during operation, without shorting the filament across adjacent windings.

Abstract: An improved support is provided for locating a lamp filament axially within a lamp sleeve. The illustrated support is a spiral coil that includes a small diameter center portion that makes contact with the filament. On either side of the filament-contacting portion, the coil opens up to larger diameters for contacting the inner wall of the quartz sleeve within which the filament is housed. The support thus appears H-shaped when viewed from the side. A lamp filament is also provided with expansion compensation sections at either end of a central section. The filament wire in the compensation sections is wound into coils having a greater diameter and also a greater spacing between windings, as compared to coil in the central section. The expansion compensation sections are preferably capable of compressing and thereby absorbing thermal expansion of the filament during operation, without shorting the filament across adjacent windings.

Abstract: A method and apparatus for more precisely centering lamp leads (32, 34) uses a support mechanism (50) for radially aligning the leads. The support mechanism is a helical member having first and second helical portions (52, 54). The first helical portion has a diameter slightly less than the inner diameter of the lamp envelope to maintain a filament (30) on axis. The second helical portion has an outside diameter less than the outside diameter of the first helical portion for securing the support mechanism to a mounting mechanism (60). Here, the mounting mechanism is preferably defined by first and second flattened portions (62, 64) integrally formed on the lead that axially positions the support mechanism in place.

Abstract: The U-shaped electric incadescent lamp (1) is characterized in that, instead of a bend, one or more kinks (20) are made in the lamp vessel (2) so as to position the first leg (14) and the second leg (16) in a parallel arrangement next to each other at a relatively small distance. The lamp thus obtained is inexpensive, compact and safe.

Abstract: To obtain a fluorescent display tube which allows the cathode to be driven by a DC current from a battery even when the overall length of the tube becomes large. This object can be achieved by: placing anchors 11A and 11B on both ends of the cathode 10; placing a support on the middle point between the anchors 11A and 11B, to which part of the cathode 10 has been fixed; and adjusting the lengths between the support and the anchors 11A and 11B to be 100 mm or less, and then adding DC power sources 13A and 13B which pass DC currents negative with respect to the support, and positive with respect to the anchors 11A and 11B between the support 12 and the anchors 11A and 11B.

Abstract: Disclosed are a process for fixing a filament onto a support in an incandescent lamp in which the filament is prevented from being deformed when it is welded onto a support and also a filament supporting structure to be established by the process. The filament fixing process comprises wrapping a foil body around each supporting end portion of a filament; squeezing the wrapped foil body together at positions close to each end thereof to form a cylindrical portion and a fin-like portion protruding from the cylindrical portion; and welding the cylindrical portion onto a support (e.g. a support wire or a supporting piece of a shade) for the filament such that the fin-like portion of the foil body may be situated within the distance or range corresponding to the diameter of the cylindrical portion as measured from the surface of the support.

Abstract: To positively locate a filament (5, 22) in position within a bulb (2) of a halogen incandescent lamp, the walls of the bulb are deformed at selected points along the length of the filament within the bulb to define at least three inwardly projecting dimples which just barely engage, or engage, the filament. Preferably, the filament is formed with a connecting portion (7) in the region of engagement, which connecting portion is either straight, coiled with a very steep pitch, or, if the filament is double-coiled, only single-coiled. The connecting portion (7) may be electrically short-circuited by a core pin (39). If the bulb is single-ended (FIG. 3), a return lead (29) along the wall of the bulb, can be pinched between adjacent walls (45) of adjacent dimples. The dimples, looked at from the outside of the lamp, are essentially funnel-shaped and, in cross section, may be circular, or if space between adjacent dimples is insufficient, may be elliptical.

Abstract: To permit easy assembly of a filament for a halogen incandescent lamp hav a filament holder frame (4) to retain an essentially planar filament (11) in position, the frame is made of two pre-manufactured identical frame halves (4a, 4b). Both frame halves have a cross element (7a, 7b), having a plurality of filament holders (10a, 10b) secured thereto, and two support strut portions (8a, 9a, 8b, 9b) at the ends thereof. To assemble the lamp, the two frame halves, together with the filament (11), are placed in a suitable jig, and the filament ends are threaded on one of the support strut portions (8a, 8b) of each one of the frame halves. The filament (11) is hooked on the filament holder (10a, 10b) and, by spreading apart the frame halves, the filament is stretched. The support strut portions (8a, 8b; 9a, 9b) are then connected by welding, thus completing the frame (4), and retaining the filament in stretched position.

Abstract: An incandescent lamp has an envelope having a bulbous portion including a wall defining a space, a thin tube extending outwardly along a central axis of the bulbous portion so as to communicate with the space, and a sealed portion located on an opposite end of the bulbous portion from the thin tube. The wall has a slope inclined toward the thin tube. A filament is provided along the central axis of the bulbous portion. An optical interference layer is arranged on a surface of the wall for reflecting infrared rays toward the filament. A first lead wire has a first end portion fixed in the sealed portion of the envelope, a second end portion coupled to one end of the filament and an intermediate U-shaped portion inserted into the thin tube for regulating a position of the filament. A second lead wire has a first end portion fixed in the sealed portion of the envelope and a second end portion coupled to another end of the filament.

Abstract: A subminiature incandescent lamp has a substantially cylindrical base to which a glass envelope enclosing the interior of the lamp is sealed. A pair of contact wires or pins are made of a metal alloy that has substantially the same thermal expansion coefficient as the glass base. The contact pins are embedded and sealed to the glass base in a gas-tight manner, with a glass-to-metal seal. The contact pins extend below the base to provide external connections of the lamp to a power source. The pins also extend into the interior of the lamp, and provide electrical contact to a filament which is mounted between them. A filament support wire is anchored in the glass base at one end thereof and has a loop at its other end in which the mid-section of the filament rests and is mechanically supported.

Abstract: A filament dampening system for a filament in a miniature lamp includes a glass bridge formed around the lead wires and the filament dampening wire.

Abstract: The present invention is a thin filament embedded in a low density aerogel for use in radiation detection instruments and incandescent lamps. The aerogel provides a supportive matrix that is thermally and electrically nonconductive, mechanically strong, highly porous, gas-permeable, and transparent to ionizing radiation over short distances. A low density, open-cell aerogel is cast around a fine filament or wire, which allows the wire to be positioned with little or no tension and keeps the wire in place in the event of breakage. The aerogel support reduces the stresses on the wire caused by vibrational, gravitational, electrical, and mechanical forces.

Abstract: An incandescent lamp containing a coiled filament within a vitreous envelope wherein the filament is supported at at least one point along its coil length by a refractory metal support wire one end of which is welded to a coil and the other end secured to the envelope wall by a glass bead. The support prevents filament sag during lamp operation and is especially useful with double-ended high intensity tungsten-halogen lamps having an elliptically shaped filament chamber with an infrared reflecting and visible light transmitting optical interference coating on the chamber.

Abstract: An incandescent lamp having a plurality of filaments which can effectively negate disadvantages of unpredictable operation and complete darkness after failure when operated similar to a conventional single filament lamp. In a preferred embodiment of the invention two filaments enclosed within an a suitable envelope are electrically connected to incandesce simultaneously. The embodiment having two filaments enclosed within an envelope of the lamp has three states: one, both filaments energize simultaneously and the lamp radiates maximum visible energy; two, first filament fails but the second filament remains energized and the lamp radiates relatively less visible energy; and three, second filament fails and the lamp is completely dark. In state one, the lamp operates similar to a conventional single filament lamp. In state two, the lamp is radiating less visible energy indicating to the user the need to be replaced before occurrence of state three, complete failure of the lamp.

Abstract: To permit ready insertion of a holding frame for a filament into an essentially tubular bulb, particularly a halogen incandescent lamp bulb made of quartz glass or hard glass, the frame has two legs extending along the wall of the bulb, connected by a holding portion to hold the filament at the end remote from the current supply leads to the filament, one of the legs of the frame is shorter than the other, for example only about one-third the length of the bulb. The longer leg of the frame can be pinch-sealed in a pinch seal closing off the bulb. The holding portion, which is intermediate the two legs, is preferably U-shaped to form a hook into which the filament can be hooked; or, particularly if the legs of the U are close together, about which the filament can be wound.

Abstract: An electron source includes: linear thermionic cathodes for emitting electron beams; an electron beam lead-out electrode which is disposed substantially in a parallel relationship with the linear thermionic cathodes and is formed with apertures for passing the electron beams therethrough; and a plurality of support members for supporting the linear thermionic cathodes each of which has a contact portion held in contact with at least a portion of the linear thermionic cathodes; wherein each of the apertures of the elctron beam lead-out electrodes is disposed so as to confront the contact portion of the support member.

Abstract: A fluorescent luminous device capable of permitting vibration of a filamentary cathode due to any external vibration or shock transmitted thereto to be readily attenuated, to thereby substantially prevent flickering of a display due to a variation in luminance of the luminous section, resulting in improving quality of the display. A part of a vibration adsorbing element provided at the end of a filamentary cathode is separatably contacted with the fixed portion of an envelope in which the element and cathode are arranged.

Abstract: To support a filament, or filament structure, in a halogen incandescent l, which may have a V or U filament, a straight filament, or be of the lumiline type, support ribs are placed within the lamp, which support ribs are formed from the lamp bulb material itself, by deforming the lamp bulb after local softening, for example by punches or by applying a vacuum, to provide interiorly extending, essentially tubular ribs. The tubular ribs may have circular or oval cross section, and can be placed to engage the filament to, for example, pinch the filament therebetween. In the pinching regions, the filament preferably is straight or only single-coiled and may be supported by a core pin.

Abstract: A halogen-filled incandescent lamp includes a curved tube enclosure made of a translucent material and enclosing a gas filling and an incandescent body made of a tungsten wire helix of circular wire cross-section. The incandescent body is arranged within the enclosure. Two inside current conductors connect the incandescent body with an energizing device. Each inside current conductor has first and second spiral members and an elongated part forming together a series assembly. The series assembly is connected via the second spiral member with the incandescent body and via the first spiral member with the energizing device. The series assembly is at least partly made of a wire having a cross-sectional area exceeding that of the tungsten wire forming the incandescent body.

Abstract: A coiled-coil incandescent body (5) of an electric incandescent lamp has a single coil intermediate portion (12) extending axially in the lamp vessel (1) and surrounded by a support member (20). The support member comprises an open ring (21) with ends (22, 23) defining a gap (24). Portions (25, 26) of these ends (22, 23) extend towards the axis (2) and have bent end portions (27, 28) which are inserted into secondary turns (13, 14) of the incandescent body (5). The support member (20) cannot be shifted along the incandescent body (5).

Abstract: To reliably retain a filament (13) axially aligned in a bulb (2) of a halogen incandescent lamp, a first current supply lead (8) is shaped to engage the inner wall (14) of the bulb at spaced corners or bend points (16, 21, 22, 424), the corner or bend points being connected by connecting legs (17, 18, 425). The legs and corner points can be arranged in triangular configuration (FIGS. 1-3; FIGS. 10-13) or in cross shape (FIGS. 4-9), and the remote end (15) of the filament, weld or push-connected to the connecting legs or end portions of the current supply lead. The polygonal corner and bend point engagement with the inner wall of the tube provides for substantially improved resistance against vibration of the filament; the engagement of the first corner or bend point, which bends the upper portion of the current supply lead towards the interior of the bulb and towards the filament, upon vibration, results in axial deflection, thereby maintaining the filament in axial position and preventing lateral excursion.

Abstract: The electric incandescent lamp has a filament (2) comprising light-emitting sections (5,6,7) and non-light-emitting sections (8,9) integral therewith. A non-light-emitting section (9) has at its two ends a helically wound portion (10,11), which portions are interconnected by the tungsten wire (3) from which the filament (2) is wound. An additional tungsten wire (14) extends along the non-light-emitting section (9) and is wound around each of its helically wound portions (10,11). The incandescent lamp has a filament (2) of a simple construction, whose manufacture can readily be mechanized.

Abstract: An electric lamp having a coiled filament and at least one intermediate filament support which effectively restrains the filament from excessive swaying or sagging whereby premature lamp failure because of electrical shorting of the filament or thermal shocking of the glass envelope is substantially reduced. The intermediate filament support includes at least one flat segment interposed between two adjacent turns of the outermost coil of the filament. The maximum thickness of the flat segment is less than the winding separation of adjacent turns of the outermost coil. In preferred embodiments of the invention, the intermediate support encloses but does not grasp the filament so that no coil of the filament, inner or outer, is distended in the process of closing the support about the filament. A support in accordance with the invention effectively restrains filament movement in directions along and normal to the filamentary axis.

Abstract: This invention provides an improved compact fine wire incandescent lamp coiled-coil filament and method for making the same. The filament has a secondary mandrel ratio in the range of about 3.0 and a primary mandrel ratio which is less than or equal to the secondary mandrel ratio. The length between supports is kept less than or equal to 20 times the secondary diameter. The improved filament design exhibits an increase in compactness and retains or increases structural rigidity while exhibiting minimal sag when the filament is incorporated into an incandescent lamp of the tungsten halogen type variety. The compact coiling method is particulalry useful in designing compact filaments for high voltage applications where it is desirable to eliminate the use of rectifying means to lower the effective voltage across the filament.

Abstract: Improved support means are provided to center the filament light source of an incandescent lamp within an open-ended transparent cylinder coated with an infrared reflecting film. Such filament mount construction is adapted for use in a tungsten-halogen lamp. A reflector lamp utilizing the improved tungsten-halogen lamp as a light source is also disclosed.

Abstract: A method of constructing a filament support member from a single-piece preformed refractory metal wire having at least one loop protrusion formed in the wire and positioned between the ends of the wire. A section of glass tubing is positioned over and supported by the loop protrusion with a head portion of the loop extending beyond the section of tubing. Heat is applied to melt the section of tubing to form an insulating bead at the base of said loop protrusion. The head portion of the loop protrusion is then trimmed to interrupt electrical continuity in the wire and thus electrically isolate the respective ends of the wire.

Abstract: An electric incandescent lamp for selective radiant energy distribution is disclosed which employs a reflective film for improved efficiency of the lamp operation. Said lamp further employs a tungsten filament extending the length of its elongated lamp envelope with particular support means for said incandescent filament also being disclosed to precisely position the filament along the principal lamp axis. Various structural configurations for said particular support means are also disclosed so that such filament position is maintained regardless of the lamp spatial orientation.

Abstract: 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.

Abstract: An improved electric lamp including an envelope having a sealed end portion, a coiled tungsten filament structure within the envelope, a pair of tungsten lead-in conductors sealed within the envelope and coupled to the filament structure, a first insulative (e.g., quartz) bridge disposed within the envelope between the filament and the envelope's sealed end, and a pair of support wires which also extend within the envelope adjacent the lead-in conductors respectively, to provide support for the contained filament structure. The improvement comprises reinforcement means in the form of a pair of platinum-clad molybdenum wire members each having a smaller diameter than that of the lead-in conductors and support wires, each of these wire members being welded to a respective pair of said conductor and support wire elements at a location between the lower bridge and sealed end. The wire members may be of curvilinear (e.g. U-shaped) configuration or of straight configuration, or a combination of both.

Abstract: 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.

Abstract: A tungsten-halogen lamp including a tubular quartz envelope wherein both of the lead-in conductors designed for providing electrical energy to the lamp's coiled filament are strategically positioned within a single, press-sealed end portion of the lamp's envelope. Electrical connections to the lamp may thus be provided at only one end thereof to thereby facilitate positioning and connection of the lamp within a photocopier or similar machine. The lamp is suited for high wattage applications (i.e., about two-hundred watts per linear inch of filament or greater) by the utilization of an expansion coil section which is provided in one of the lamp's two lead-in conductors to prevent bowing of the lead-in conductor and its quartz sleeve. This coil section enables the conductor to expand during the high temperatures encountered when the lamp is operated at such high wattages.

Abstract: A tungsten-halogen lamp including a tubular quartz envelope wherein both of the lead-in conductors designed for providing electrical energy to the lamp's coiled filament are strategically positioned within a single, press-sealed end portion of the lamp's envelope. Electrical connections to the lamp may thus be provided and only one end thereof to thereby facilitate positioning and connection of the lamp within a photocopier or similar machine.

Abstract: A linear filament assembly for a halogen cycle or other incandescent lamp comprises a generally linear filament usually a coil or coiled coil, supported at opposite ends by substantially rigid conductive leads. A rigid insulating rod, preferably of quartz extends generally parallel to the filament, and a plurality of supports extend between the rod and the filament, each support being fixedly secured to the rod and supporting the filament. The supports are embedded in the rod, this being achieved by heating the rod at the point of insertion until it is sufficiently soft to insert the wire without excessively distorting the rod.

Abstract: A linear filament assembly for a halogen cycle incandescent lamp comprises a generally linear filament (usually a coil or coiled coil) supported at opposite ends by substantially rigid conductive leads, a rigid insulating rod, for example of quartz, extending generally parallel to the filament, and a plurality of supports extending between the rod and the filament, each support being fixedly secured to the rod, for example by having a coil part fitting over the rod and also being formed with a coil loosely exbracing the filament. The coils embracing the filament preferably include several closely spaced turns which loosely embrace part of the filament coil, without screwing into or engaging individual pitches of the latter.

Abstract: A wire support for the coiled-coil filament of a tubular double-ended incandescent lamp in which the support is formed of a single wire which extends longitudinally along a portion of the inner wall of the lamp envelope, with each end of the support wire terminating in a loop of a size to be circumferentially engageable with the inner wall of the envelope, and a midportion of the support wire extending laterally in closed loop form to firmly embrace a localized point on a turn of the filament so that the turn extends through that midportion loop and is supported therefrom.

Abstract: An improved filament support of especial value in linear tungsten halogen lamp of low wattage, is formed from a composite wire which comprises a core wire overwound with a further wire, both of tungsten. The supports according to the invention afford better grip and reduced weight as compared with the supports of the prior art.

Abstract: The coiled-coil filament of a tubular incandescent lamp is held in suspended longitudinally-extending position within the envelope by lead-in conductors and a single support wire that is anchored in one of the envelope seals and has a hook portion that is coupled to one of the secondary turns of the filament. The free end of the filament-support member is formed into a single loop that nestingly engages the arcuate wall of the envelope and thus holds the support member and filament in the desired position during the sealing-in operation and within the finished lamp. The unique shape of the support member simplifies its manufacture and its subsequent assembly with the coiled filament and envelope.

Abstract: A simplified lamp mount structure is disclosed in which one end of the filament is attached to the apex of a loop with the free ends of the loop embedded in glass. The other end of the filament is attached to a conventional inner lead wire.

Abstract: A tubular incandescent lamp comprises an elongated tubular envelope and a filament assembly disposed longitudinally extending in the tubular envelope by means of ring-like anchors. The filament assembly comprises a plurality of coil-shaped filaments, subcoils coupled with the filaments and connectors formed by strand wires. The ends of the connector are fitted into the subcoils and fixed therein.