Abstract: A connector (27) is adapted to be connected to a circuit board (23) and has an insulating housing (41) adapted to be mounted to one end portion of the circuit board. The housing is provided with conductive contacts (42) each having a shape along the housing. The housing has first and second portions (51, 52) that respectively face both surfaces of the circuit board when the housing is mounted to the circuit board, and a joining portion (54) joining the first and second portions together. The contacts are insulated from the circuit board in the joining portion and are exposed in the first portion so as to be capable of contacting the surface of the circuit board.

Abstract: A connector (27) is adapted to be connected to a circuit board (23) and has an insulating housing (41) adapted to be mounted to one end portion of the circuit board. The housing is provided with conductive contacts (42) each having a shape along the housing. The housing has first and second portions (51, 52) that respectively face both surfaces of the circuit board when the housing is mounted to the circuit board, and a joining portion (54) joining the first and second portions together. The contacts are insulated from the circuit board in the joining portion and are exposed in the first portion so as to be capable of contacting the surface of the circuit board.

Abstract: A lamp socket has a housing forming a cavity centered on an axis and having a generally cylindrical side wall and a floor, an internally threaded sleeve coaxially received in the cavity, a central socket contact on the floor at the axis, and an annular disk separate from the housing, surrounding the central contact. The disk is formed on the axis with a central aperture and is spaced at the aperture substantially further from the floor than the central socket contact. Thus only a lamp base with a central lamp contact on an extension stem can fit in the socket and engage through the aperture and past the disk to make contact with the central socket contact.

Abstract: A lamp includes a reflector having a passageway opening to a heel of the reflector, a lamp capsule having a lead that extends rearward through the passageway, a conductive clip that spans a diameter of the heel and that has tabs that extend forward at opposite sides of the heel and an arm that extends rearward, the arm being attached to a portion of the lead that projects out of the passageway, and a base that is attached to the heel and that engages the tabs at the opposite sides of the heel. The arm holds the lamp capsule in place and electrically connects the lamp capsule to the base. The arm may be a semi-detached central portion of the clip that is bent to be substantially parallel to an axis of the lead.

Abstract: A lamp base (10), for example, for a tungsten-halogen lamp, comprises three electrically conductive parts or elements and a glass insulator. Specifically, the lamp base (10) comprises a first metallic outer part (12), a glass inner part (14), an electrically conducting eyelet (18), and an upper electrically conductive part (20), all symmetrically arrayed about a longitudinal axis (16). The glass insulator (14) bonds all of the electrically conductive parts, (12, 18) and (20). The metallic outer part (12) is preferably threaded for insertion into a socket and has a major, internal diameter D1. The glass inner part (14) has a primary, external diameter that is equal to the major internal diameter D1; i.e., the external diameter of the glass inner part (14) is contiguous with the internal diameter of the metallic outer part (12). Further, the internal glass part (14) has an opening (14a) therein and the opening (14a) has a secondary diameter D2In an aspect of the invention, D2/D1 is greater than 0.

Abstract: The invention relates to a discharge lamp having and envelope and at least one pair of inner leads and at least one pair of outer leads corresponding thereto, at least one end of each lead disposed in the interior of the lamp, with a substantially planar foil between any one pair of inner and outer leads, and a connector provided between any one lead and the foil, the connector having at least one planar contact surface for connecting the lead to the foil and increasing the contact surface area and providing means for dissipating excess heat and energy that enters the lamp.

Abstract: The invention is to provide a switch lamp holder, which comprises: a core, having a switch control element stretched from its lateral and a set of penetrating orifices which are residing at the oblique areas of the core, and joining a hollow chamber at its one end; a cover, having a through hole at its top and a hollow chamber at its bottom to conceal the core with an joint, and having a slot at its lateral to allow the passage of the switch control element; and a positioning plate, offering a set of posts at its top, capable of joining the penetrating orifices, and a set of positioning grooves, for accommodating a set of conducting spring slices, and the conducting spring slices is provided with a connecting cord to extend upward to join said core.

Abstract: A lamp base including an insulating shell connected to a luminous tube; an electric cap which electrically connects with a live voltage source; a T-shaped plastic connecting piece of the electric cap; an electric piece which electrically connects with a neutral power source wire, a basal body of the electric piece is an annular conducting strip which forms metal fixed claws extending into the insulating shell; a first lead disposed in the insulating shell; the electric cap inserts fixedly into a T-shaped plastic connecting piece and is disposed at the top of the insulating shell; the annular conducting strip covers the T-shaped plastic connecting piece; the metal fixed claws of the electric piece extend into the insulating shell, the electric cap and the annular conducting strip being disposed outside of the insulating shell; the electric cap is insulated with the annular conducting strip by the T-shaped plastic connecting piece.

Abstract: A lamp is configured for removable insertion into a socket assembly. The lamp includes a light source and a housing. The housing has a proximate end and a distal end. The light source is attached to the proximate end. The housing has an aperture at the distal end. The socket assembly includes a post. The aperture is sized to receive the post when the lamp is inserted into the socket assembly.

Abstract: The HID lamp mount has a discharge tube with two ends. A shroud surrounds the tube. Shroud clips position the shroud ends. The shroud clips have arcuate portions engaging the shroud periphery and transverse portions spanning the shroud diameter and grasping and positioning the tube ends. A shroud rod attaches between the clips to maintain their positioning. An electrical lead-in connects the second electrode terminus and has a first leg extending transversely from the terminus and a second leg extending parallel to the electrode. An offset electrical lead-in connects the first electrode terminus, and has a first section extending transversely to the first electrode, a second section extending parallel to the shroud, a third section extending toward the shroud, and a fourth section extending parallel to the shroud. An offset electrical lead-in retaining clip is affixed to the shroud and the fourth section of the offset electrical lead-in retaining clip.

Abstract: A lamp holder is disclosed lamp holder that will accept and make electrical contact with a lamp having a predetermined base and will accept, but not make electrical contact with lamps having other bases. A cavity (or central well) in the base (or floor) of the lamp socket is provided to accept a lamp configured with an extension extending from the base of the lamp and providing a vertically mounted electrical contact in the cavity that can only be contacted by a lamp contact that is placed at the end of the lamp base extension. A lamp lacking such an extension and a contact on such extension, cannot extend into and engage the contact in the cavity.

Abstract: Three-Way Light Bulbs and Sockets can create a condition, where “light flicker” can occur. One way to correct the situation and to reduce the chance of having light flicker is described in this patent. It consists of introducing an “INTERPOSER”, between the light bulb and the socket. Several interposer designs and construction options are described in the patent, as well.

Abstract: The electric lamp comprises a lamp vessel (1) having an end portion (3) which is surrounded by a shell portion (22) of a lamp cap (20) having screw thread. The end portion (3) has transversal indents (6). A plastic coupling member (30) having arms (33) bearing a cam (31) on their inner surface (34) and being undulated at their outer surface (35) is present in the lamp cap (20). The cams (31) are located in a respective indent (6). The shell portion (22) of the lamp cap (20) is screwed onto the coupling member (30). In the electric lamp, the lamp cap (20) is fitted to the lamp vessel (1) by assembling. The current conductors (7, 8) too may be connected to the contacts (21) of the lamp cap (20) by assembling, thus avoiding time and energy-consuming thermal processes.

Abstract: There is disclosed a porcelain lamp socket for use in a humid environment where the socket has a body, a screw shell, a center contact and two terminals; one for the line and the other for the neutral wire connection. The screw shell and the line and neutral terminals are attached to the porcelain body by means of fasteners such as eyelets, rivets, screws, etc. All electrical conductors in the bottom of the socket, including the fasteners are covered with a spacer which forms a watertight seal with the bottom surface of the body. The spacer, which can be made of high dielectric plastic material, can be mechanically held in place by projections which fit snuggly within the eyelets or rivets. RTV, either by itself or in combination with soft fillers such as washers can also be used to obtain a water tight seal. The device disclosed finds utility in applications where superior dielectric strength is desired between the live parts on or in the socket and the sheet metal (ground) to which the socket is mounted.

Abstract: In a bulb-form lamp, a threaded portion 31 of a lamp cap 5, that is, a shell 30 is made of a conductive resin. The conductive resin shell 30 and an eyelet 50 constituting the lamp cap 5 are composite parts, which are molded integrally with a lamp case 20. A part of the conductive resin shell 30 is provided with a terminal connective portion 30a projecting into the lamp case 20. The terminal connective portion 30a is connected with an electrode terminal 40 led out of a printed circuit board 13 of a lighting circuit 14 so that the conductive resin shell 30 and the lighting circuit 14 are electrically connected. By doing so, it is possible to simplify the assembly of bulb-form lamp, and to reduce an assembly cost, and further, to manufacture a bulb-form lamp having a high quality and a lamp case for the bulb-form lamp.

Abstract: Without applying soldering or plasma arc welding, a lead wire is brought into connection with an eyelet easily and reliably so that lighting failure due to incomplete contact is prevented and cost saving is achieved. A base (7) has a screw form shell (8) and an eyelet (9). An end portion of the shell (8) is provided with the eyelet (9) via an insulator. A lead wire (11a) supplying power is brought into connection with a portion of the eyelet (9) at other than an outer surface of the eyelet.

Abstract: A lamp apparatus comprises a lamp body, a base mounted to the lamp body, the base including a top end of base connected with a first conductor electrically and a threaded portion connected with a second conductor electrically, the top end of base and the first conductor welded through the process of mutual fusion, and a welded portion formed in a convex shape with the mixture of materials of the top end of base and the first conductor.

Abstract: To provide a bulb-form lamp including a few compartments, which can be easily fitted in a socket of a lighting equipment and reliably carry out electrical contact between a shell and the socket of the lighting equipment. The bulb-form lamp includes a shell surrounding one end of a casing, and the shell is molded integrally with one end of the casing to make contact with an outer surface of the casing leaving substantially no gap.

Abstract: The present invention provides a tube lamp and its manufacturing method which allow a lighting circuit and a shell to be easily and reliably connected together, which enable automation of a step of connecting the lighting circuit and the shell together, and which require low costs while achieving a high production efficiency. The tube lamp includes a case having a shell at an end thereof, and a lighting circuit housed in the case and having a printed circuit board with a circuit part mounted thereon, wherein the shell and the lighting circuit are connected together without leads.

Abstract: The present invention provides an inexpensive low-pressure mercury vapor discharge lamp having enhanced productivity. The low-pressure mercury vapor discharge lamp comprises an arc tube, a holder for holding the arc tube, a lighting circuit held on the opposite side of the holder from the arc tube and adapted for lighting the arc tube, a case having a screw portion provided at one end thereof and adapted for accommodating the lighting circuit, and a base threaded and fixed to the screw portion. A recessed groove is provided in a helical screw thread of the screw portion. The two lead wires (top lead wire and side lead wire) which are power source wires are respectively connected at one end thereof to the lighting circuit. The side lead wire is disposed along the groove and is sandwiched and fixed between the base and the screw portion.

Abstract: A fluorescent lamp in which a connecting terminals of a lighting circuit board and lead wires of a fluorescent tube easily can be connected. The lamp includes a fluorescent tube, a holder holding the fluorescent tube, a lighting circuit board provided with a lighting circuit for lighting the fluorescent tube, and a case connected to the holder and housing the lighting circuit board. At the end portion of the lighting circuit board, V-shaped or Y-shaped cut-outs, which widen toward an outer side, are formed. In the vicinity of the inner narrow portion of the cut-outs, the connecting terminals connected to the lighting circuit are provided. On a side wall formed on the holder opposite to the fluorescent tube, V-shaped or Y-shaped cut-outs, which widen as the distance from said fluorescent tube increases, are provided, and the broad portion of the cut-outs of the holder and the broad portion of the cut-outs of the lighting circuit board are arranged facing each other.

Abstract: A lamp has an electrically insulating, light-transmitting, preferably lead-free envelope with a base end and contains a light source. At least two electrical lead-ins are connected to the light source and exit the envelope. A base is affixed to the base end, the base having first and second electrically conductive portions separated by an electrically insulating portion. One of the electrical lead-ins is electrically connected to the first electrically conductive portion and another of the electrically conductive lead-ins is electrically connected to the second electrically conductive portion. The base is non-rotationally mounted to the base end of the lamp by a locking clip affixed to the first electrically conductive portion by mechanical means and affixed to the base by chemical means.

Abstract: A locking clip 10 for fixing a base to an end of a glass bulb. The locking clip 10 has a body 12 with a first portion 14, a middle portion 16 and an end portion 18. The middle portion 16 is scyphate, i.e., cup-shaped, and defines a plane, 20 (FIG. 2). The first portion 14 extends away from plane 20 in a given direction by an angle &agr;, which, in a preferred embodiment, is about 5 degrees. The end portion 18 is connected to the middle portion 16 by a reentrant section 22 and extends away from the plane 20 by an angle &bgr; in a direction opposite to the given direction. In a preferred embodiment angle &bgr; is preferably about 20 degrees. In a still more preferred embodiment the included angle between first portion 14 and end portion 18 is between 25 and 35 degrees. A centrally located aperture 24 is provided in the reentrant section 22 to aid in the subsequent bending of the end portion 18 at the final welding.

Abstract: An insulating member for a base for a light emitting bulb has an electrically insulating body formed from a thermoplastic plastic material and having a first surface, a second surface spaced therefrom, and a sidewall connecting the first and second surfaces. The sidewall is formed to flexibly receive and hold an electrically conductive element, such as the threaded portion of a screw base.

Abstract: A lighting fixture having three lights residing in three sockets is disclosed. The light sockets are mounted by brackets to a cover plate. The cover plate is secured to a bowl by means of an interconnecting support in combination with an upper threaded stud and a threaded cap. The interconnecting support is secured at one end thereof to the bowl by means of a lower threaded stud and a nut. A flange socket is secured to the bowl by screws. Wiring means are employed to electrically connect the socket and the light bulbs for illuminating them.

Abstract: An electric lamp with an enclosed lamp capsule has reduced production manufacturing losses when manufactured with a split eyelet used to duct a lead through the lamp housing. The elongated tube portion of the eyelet has either thinned wall sections or splits formed along the tube axis. When the rivet is set, the tube wall distorts or gives way along the weakened axially lines. The housing glass is then not fractured during riveting, and after riveting the thermal expansion and contraction of the glass with respect to the rivet results in decreased pressure on the glass. The lamp with a split eyelet yields a higher percentage of lamps surviving the manufacturing process, and having fewer cracks or other rivet induced defects in final products.

Abstract: A shockproof (touch-safe) lamp holder and adapter system which replaces conventional screw-type holders and bayonet holders is disclosed. The lamp holder complies with the list of requirements demanded by testing authorities for many years.The new lamp sockets can be used with an adapter in conventional lamp holders, and the requirement that the adapter cannot be removed again after insertion without any tools is fulfilled by a reversing lock.

Abstract: Plastic housing and base construction, especially for compact fluorescent lamps and operating units thereof comprising a housing (1) which is a cup-like body and a base (2) having a metal base shell (26) and at least one metal central (3) or end contact part (4, 5). The base shell (26) is electrically insulated from the central (3) or end contact parts (4, 5). The base (2) also includes a plastic insert body (20) which is open at its upper end and closed at least partially at its lower end. The diameters of the plastic insert body (20) decrease in at least one step and it has a cylindrical or slightly conical mantle portion (24) in the region of its upper end. The base shell (26) includes a thread-free opening portion (27) the inner diameter of which fits to the mantle portion (24) of and is pulled over and fixed to the plastic insert body (20).

Abstract: An improved electrically conductive light bulb base for use with common threaded light bulb sockets currently widely used. The improvement combines a substantial reduction in the amount of thread required, by employing a shorter thread that enlarges or increases in size, in radius, or both. This type of thread is in place of the standard thread in securing the bulb in the socket. Optionally, short portions of thread may be provided on one side of a generally cylindrical, smooth base. The particular advantage is that the bulb inserted by hand can be inserted and secured or released and removed with a minimum number of turns of the wrist.

Abstract: A lampholder for shrouded low-wattage metal halide lamps which include a contact button on an extension of the lamp base to distinguish them from unshrouded lamps. A hub with walls and top is placed about the entrance to an additional cavity in the lampholder body. A socket contact is arranged to only make contact with the contact button at the end of an extension which is able to enter the cavity and not make contact with a contact button not an extension which is prevented from entering the cavity.

Abstract: A sealing ring is fixed to a light bulb to sealingly contact a top rim of a light bulb-receiving socket to seal the gap between the light bulb and the socket. The sealing ring is flexible and includes a base that is fixed to the light bulb, a bottom section that engages the top rim and a top portion that extends radially outward from the base farther than the radial extent of the bottom portion. The bottom portion includes an arcuate section that flexes as the bulb is screwed into the socket to ensure that the gap is fully sealed. The sealing ring and adhesive for fixing the sealing ring to the light bulb can be sold in a kit.

Abstract: A lampholder for shrouded low-wattage metal halide lamps which include a contact button on an extension of the lamp base to distinguish them from unshrouded lamps. A hub with walls and top is placed about the entrance to an additional cavity in the lampholder body. A socket contact is arranged to only make contact with the contact button at the end of an extension which is able to enter the cavity and not make contact with a contact button not on an extension which is prevented from entering the cavity.

Abstract: The high current lamp system of the present invention includes a ferrule and socket which are of the same polarity and engage one end of the lamp. The socket is designed to enable the lamp to pivot slightly and permit translation in the direction of the axis of the lamp to facilitate replacement of the lamp. More importantly, the ferrule and socket system of the present invention have been designed to handle the higher power ratings, up to and including the 10,000 watt range.

Abstract: A light emitting diode array mounted on a printed circuit board is provided with capacitive means to reduce voltage, mounted in a glass tube and provided with a standard candelabra or other base for insertion into a light socket in a slim line exit or other sign. In a preferred embodiment the circuit board is rotatable relative to the metal base so as to facilitate maximum light emission from the sign.

Abstract: An electric lamp includes a lamp cap having an insulative body of synthetic material with a bore therein. A lamp cap contact includes a rigid shank received in the bore of the insulative body. The diameters of the bore and shank and the elasticity of the bore wall are selected so that a conductive lead of the lamp is securely clamped between the shank and the bore wall when the shank is fully received in the bore. In a favorable embodiment, the lead has a free end extending in the direction of insertion of the shank into the bore, which avoids the lead wire from being pushed out of the bore.

Abstract: A modified base construction for a high intensity arc discharge lamp is described enabling a single piece screw type conductive base member to be directly secured to the outer lamp envelope. The simplified base construction employs a conductive clip physically attached to the outer lamp envelope which provides a locking engagement between the assembled lamp parts.

Abstract: A lamp base locking clip comprises a first end having a given thickness; an intermediate portion having a thickness at least approximately 3 times said given thickness and a second end having said given thickness. The intermediate portion is defined by opposed, space apart, first and second surfaces, said first end being contiguous with said first surface and said second end being contiguous with said second surface. In a preferred embodiment the clip is formed from a single piece of ribbon material and said intermediate portion is formed by folding said ribbon to have two reentrant portions. The preferred embodiment is especially suited for automation.

Abstract: An improved structure of lamp socket in which the socket body consists of two hinged symmetrical halves retained in shape by a hoop; the positive contact metal plate is made of L-shaped configuration mounted in the top of the socket body on the inside and supported between two inside flanges; the negative contact metal plate is a flat plate vertically laterally disposed inside the socket body and having the bottom end stopped at a receptacle inside the socket body.

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.

Abstract: A lamp socket of the type having a first contact metal plate and a second contact metal plate fastened to a socket body thereof, and a socket cap fastened to the socket body to hold down an electric wire causing the first and second contact metal plates made a respective electric contact with either conductor of the electric wire, wherein a contact metal socket is fastened to the socket body on the inside through a screw joint to hold the lamp bulb, causing the ring contact of the lamp bulb electrically connected to the second contact metal plate and permitting the tip contact of the lamp bulb to extend out of a hole on the contact metal socket and to make an electric contact with the first contact metal plate, the contact metal socket having a serrated outward flange at the bottom engaging the inside wall of the socket body to secure the connection between the socket body and the contact metal socket.

Abstract: A modified lamp includes first and second filaments contained in an envelope to which power is selectively provided individually or conjunctively to obtain three distinct light levels. A contact member in the lamp base is modified to include a planar surface over a major portion of its radial width. Additionally, a lead wire opening that receives one of the lead wires extending from one of the filaments, is spaced from the planar surface to limit the potential for electrical contact with a tang of an associated socket. In one preferred embodiment, the lead wire opening is disposed in a recess that has a maximum circumferential dimension less than the cross-section of the tang to preclude advancement of the tang into the recess. A flat is provided along the outer periphery of the contact member to provide accurate orientation of the contact member during lamp assembly.

Abstract: A lamp base inner shell including a washer-like base having a cylindrically wall attached at a first end to an outer periphery of the base. The cylindrical wall includes a threaded portion and a plurality of cut-out portions in a second end thereof which define an equal number of tabs, each tab having an indentation extending inwardly. At least one cut-out portion extends to the inner shell base. The inner shell is used to electrically connect and secure a lamp base shell to a lamp tube. The inner shell facilitates automated production of high intensity arc discharge lamps.

Abstract: A lamp base locking clip including a plate having a lip extending outwardly on one end, and a flat portion on the opposite end, is captured in a keyway formed in the glass neck of a lamp body. One of the lamp lead-in wires is welded to the flat portion of the clip and a rim on a lamp base shell is welded to the outwardly extending lip, thus forming a lamp-base assembly with good torque resistance and no lead-based solder.

Abstract: The electric lamp includes a moulded reflector body (1) having a neck-shaped portion (12) which has an end portion (13). A lamp cap (2) is connected to the neck-shaped portion (12). An insulator body (5) surrounds the end portion (13). The insulator body is a ring which is wider than the lamp cap (2), and extends completely about the neck-shaped portion (12). The lamp cap (2) surrounds the end portion (13) and is directly attached thereto. The electric lamp is able to comply with an IEC requirement, while components of the lamp can be used to assemble a lamp complying with an ANSI requirement, without employing additional or different components.

Abstract: A single-ended low pressure discharge lamp having an Edison base includes at least one U-shaped fluorescent tube having electrode leads which are connected to a ballast arrangement disposed in a housing base. The housing base has an upper part on which the fluorescent tubes are mounted, a connecting part on which a threaded base is mounted and a supporting part formed between the upper part and the connecting part. Lead-in wires are connected from the ballast arrangement to the threaded base in a manner to facilitate automated assembly of the lamp. A first lead in wire connects to the central portion of the threaded base whereas a second lead-in wire connects to the sleeve portion after first passing through a guided opening formed in the housing base between the supporting part and the connecting part.

Abstract: A base assembly and method of forming the base assembly for a lamp includes an annular eyelet having an axially outward extending protrusion. The lead wire is fed through the eyelet and folded across the protrusion while a contact member sandwiches the lead wire and confines it during a welding operation. The eyelet, contact, and lead wire are thus fusion bonded to provide a solder-free connection.

Abstract: An all purpose socket disc for use in lighting fixtures and their assembly, each disc including a planar insulating member having a central aperture and a radially offset pin extending outwardly from one surface thereof adapted for cooperation with a bore in a lamp socket. An axially thick head grommet spacer means with an integral thin-walled tubular rivet projecting coaxially from a bore through the spacer and adapted to be secured through the central aperture of the planar member with said spacer extending in the opposite direction from said offset pin. The head also having means on at least one face thereof for preventing rotation relative to said disc and said lighting fixture said means insuring a positive ground with the lighting fixture.

Abstract: 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.

Abstract: A lighting system using a PL fluorescent lamp which is capable of screwing into a standard electrical lamp socket utilizing a base member possessing a mechanism for mechanically supporting a PL fluorescent lamp. A male fitting is connected to the base member and includes an outer surface which may be threaded in configuration. An adaptor is also used in the present system and is capable of mechanically and electrically connecting to a standard Edison electrical lamp socket. The adaptor includes an external threaded outer surface for threadingly engaging the standard Edison lamp socket, and also includes an inner surface in the form of a lamp socket. The inner surface lamp socket of the adaptor is capable of mechanically and electrically contacting the outer surface of the male fitting. The adaptor inner lamp socket and male fitting are of a non-standard size. The adaptor locks into the standard Edison electrical lamp socket, preventing its usage by standard incandescent lamp bases.

Abstract: The electric lamp is provided with a cap (3) having a base (9) of insulating material bearing a metal disc (4) on an outer surface thereof. The disc (4) and the base (9) have an opening (10) through which a current supply conductor (6) extends, that is attached to the disc (4) by means of solder (11). A girdle of holes (12) in the disc (4) surrounds the opening (10) and the solder (11). The girdle of holes (12) prevents the soldering flux and the solder (11) from flowing over the whole surface of the disc, thereby limiting the amount of flux and solder used.