With Lead Wire Or Connector Patents (Class 313/331)
  • Patent number: 4994710
    Abstract: The low-pressure discharge lamp has a tubular lamp vessel provided at its both ends with a lamp cap having a pair of contact pins. Each lamp cap is fixed in an adapter having one central contact pin electrically connected to at least one of the pair of contact pins of the lamp cap. A lamp of ordinary construction when provided with the adaptor is thus suitable for use in a space containing explosive gas.
    Type: Grant
    Filed: March 10, 1989
    Date of Patent: February 19, 1991
    Assignee: U.S. Philips Corporation
    Inventors: Bauke J. Roelevink, Frans J. Traksel, Johannes A. A. M. Van Heeswijk
  • Patent number: 4987341
    Abstract: A flash lamp which has two electrodes of refractory metal fused into a glass housing. In order to enable a soft-soldered connection, the outer end of the electrodes is respectively connected to a soft-solderable metal coating.
    Type: Grant
    Filed: May 7, 1990
    Date of Patent: January 22, 1991
    Assignee: Heimann GmbH
    Inventors: Eugen Achter, Ingo Duenisch, Michael Lausch
  • Patent number: 4970428
    Abstract: A double-ended miniature lamp comprises a filament enclosed in a hollow bulb. Lamp lead wires are connected with both the ends of the filament and emerge from closed ends of the bulb. Square-shaped supporting portions of a lamp base consisting of a heat resistant plastic material shape-matingly support at least those closed ends.
    Type: Grant
    Filed: April 7, 1989
    Date of Patent: November 13, 1990
    Assignee: Kabushiki Kaisha Hybec
    Inventors: Futomi Hayakawa, Kazuo Onoda
  • Patent number: 4959585
    Abstract: An electric incandescent lamp having an improved coiled refractory metal filament construction is disclosed which enables the lamp to provide a more precise light source. Various lamp and coiled filament configurations are disclosed to include employment of a reflective film for improved efficiency of lamp operation while a halogen substance can also be included in the inert gas filling for this purpose. A method to manufacture the disclosed lamp improvement is also provided.
    Type: Grant
    Filed: September 6, 1988
    Date of Patent: September 25, 1990
    Assignee: General Electric Company
    Inventors: Leonard E. Hoegler, Gerald A. Johnson, Diana M. Essock, Kent K. Kipling
  • Patent number: 4952838
    Abstract: A resiliently mounted miniature incandescent lamp assembly.
    Type: Grant
    Filed: January 11, 1989
    Date of Patent: August 28, 1990
    Assignee: Precision Lamp, Inc.
    Inventor: Richard E. DuNah
  • Patent number: 4918353
    Abstract: This invention relates to a glass reflector and tungsten-halogen lamp combination wherein the lamp is cemented into the glass reflector with an aluminum phosphate cement composition which comprise a mixture of aluminum phosphate containing excess phosphoric acid, relatively small particle size alumina and a mixture of relatively medium and coarse particle size inert filler materials and wherein the lamp contains a hermetic seal between quartz and a molybdenum foil with that portion of the foil in the seal area which is exposed to an oxidizing environment coated with alkali metal silicate.
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: April 17, 1990
    Assignee: General Electric Company
    Inventors: Clark D. Nelson, Richard Malinowski, Catherine Mers, Diana Essock, Vito Arsena, Mary Jaffe
  • Patent number: 4918355
    Abstract: An electric lamp (e.g., tungsten halogen) including an elongated envelope with at least one sealed end portion of flattened configuration. Located on the sealed end portion is a conductive base member of hollow configuration which is electrically coupled to the lamp's lead-in conductor (which projects externally from the envelope) and which is located not only substantially about the sealed end portion so as to substantially surround the end but also extends over a part of the envelope's body portion to thereby substantially prevent breakage of the sealed end portion (e.g., during lamp insertion and/or removal).
    Type: Grant
    Filed: November 3, 1986
    Date of Patent: April 17, 1990
    Assignee: GTE Products Corporation
    Inventors: Merle E. Morris, Stephen P. Senft
  • Patent number: 4908546
    Abstract: This invention relates to the lead-in wires used in association with press seals in soda-lime glass for achieving electrical connection into the sealed envelope of a compact fluorescent lamp. The lead-in wires have a core comprising nickel and iron. A metallic plating on the core prevents formation of Fe.sub.2 O.sub.3 during lamp sealing. The invention improves lamp life by maintaining seal integrity at elevated seal temperatures.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: March 13, 1990
    Assignee: GTE Products Corporation
    Inventors: John W. Shaffer, Peter V. Caleshu, David W. Johnston
  • Patent number: 4864184
    Abstract: An improved lamp construction and associated method of manufacture of a lamp that includes a sealed capsule with lead-in wires and a ceramic base. A pair of sleeves each defining a lamp contact pin at one end thereof are swaged at the other end thereof to the lead-in wires to secure the sleeves thereto. The ceramic base has a bottom wall with a pair of holes therein for receiving respective sleeves with the contact pin ends thereof depending from the base bottom wall and with the swaged ends thereof defining a limiting wall for positioning of the sleeves in proper relation relative to the ceramic base. The cement is disposed in the ceramic base and cured to secure the sleeves and lead-in wires in the ceramic base.
    Type: Grant
    Filed: November 23, 1987
    Date of Patent: September 5, 1989
    Assignee: GTE Products Corporation
    Inventor: Raymond T. Fleming
  • Patent number: 4851733
    Abstract: An electric lamp has elongated metal foils as a part of the current conductor lead-throughs. Each metal foil has major surfaces which meet one another along each opposing side edge of the foil at an acute angle. The metal foil has a cross-section transverse to the side edges. At least one of the major surfaces has a pair of concave curvature portions each adjoining a respective side edge, and a convex curvature portion extending between the pair of concave curvature portions.
    Type: Grant
    Filed: November 23, 1987
    Date of Patent: July 25, 1989
    Assignee: U.S. Philips Corporation
    Inventors: Gijsbert H. C. Kuus, Godefridus Heijnen
  • Patent number: 4851734
    Abstract: A flat fluorescent lamp having transparent electrodes, transparent glass plates spaced vertically apart and confronting each other, transparent conductive films forming electrodes provided on the outer surface or the inner surface of the glass plates, fluorescent paint layers provided fixedly on the inner side of the glass plates, or on the glass plates via the transparent conductive films by coating the fluorescent paint on the inner surfaces of the glass plates or conductive films, glass frames spaced horizontally close to both ends of the transparent glass plates or the transparent conductive films and fixedly mounted on the glass plates or transparent conductive films, a space surounded by the glass plates or the transparent conductive films and the glass frames for sealing gas, generally an inert gas therein, and lead-in wires clamping one end of the glass plates and the transparent conductive films.
    Type: Grant
    Filed: November 20, 1987
    Date of Patent: July 25, 1989
    Assignee: Hamai Electric Co., Ltd.
    Inventors: Jitsuo Hamai, Hiroyuki Hamai, Eiichi Asami
  • Patent number: 4835439
    Abstract: The life of electric lamps exposed to an oxidizing environment at elevated temperature and having hermetic seals between molybdenum and a vitreous material is substantially increased by applying alkali metal silicate to the surface of that portion of the molybdenum in the seal area which is exposed to said oxidizing environment.
    Type: Grant
    Filed: September 29, 1987
    Date of Patent: May 30, 1989
    Assignee: General Electric Company
    Inventors: Diana M. Essock, Richard F. Malinowski
  • Patent number: 4827189
    Abstract: The present invention is directed to a improved gas discharge lamp particularly for use as flash bulbs or lamps, wherein two tungsten electrodes are fused into a glass tube. In order for the lead to be soldered to an outer end of each of the tungsten electrodes with a soft solder, the outer ends of the electrodes are provided with a coating of a refractory solder, such as a hard solder or brazing compound. The coating, which has a melting point approximately at the point of fusion for the glass tube, can be applied during the step of fusing the electrodes into the glass tube.
    Type: Grant
    Filed: April 11, 1988
    Date of Patent: May 2, 1989
    Assignee: Heimann GmbH
    Inventors: Eugen Achter, Michael Lausch
  • Patent number: 4806816
    Abstract: The high-pressure discharge lamp has a discharge vessel (1) with neck portions (7) of reduced width. The electrode pins (9) have at their free ends an electrode head (10), whose largest diameter is larger than the diameter of the electrode pins (9). Due to the fact that the electrode head (10) must be able to pass through a duct in the neck portion (7) of reduced width when the lamp is assembled, the electrode (2) has lateral play, which may lead to a non-centered position of the electrode (2) in the discharge vessel (1). In the lamp according to the invention, this disadvantage is mitigated in that the electrode pin (9) in the neck portion (7) of reduced width has a transverse dimension which is larger than the diameter of the pin (9), for example due to the presence of a flattened part (11).
    Type: Grant
    Filed: October 16, 1987
    Date of Patent: February 21, 1989
    Assignee: U.S. Philips Corporation
    Inventor: Bertus de Vrijer
  • Patent number: 4797794
    Abstract: A reflector lamp for use in a device (i.e., flashlight) that includes a reflector member having a reflecting portion and a base neck portion with an extending stub portion. A lamp capsule (i.e., low wattage tungsten halogen capsule) is disposed within the reflector member and has a pair of lead wires extending therefrom to be received at said stub portion. The stub portion includes oppositely disposed elongated slots of rectangular cross-section formed therein while the lead wires in turn each include, along at least a segment thereof, a workhardened rectangular cross-section of dimension sufficient to enable snug receipt thereof in one of the slots. The lead wires are thus capable of being disposed within the respective slots without the requirement of adhesive or glue therebetween. Further, the lead wires are disposed to a depth sufficient to maintain an interlock therebetween despite exertion of compressive forces imposed on the leads by respective contacts which open and close against the lead wires.
    Type: Grant
    Filed: August 12, 1987
    Date of Patent: January 10, 1989
    Assignee: GTE Products Corporation
    Inventors: William G. Connor, Chris Coliandris
  • Patent number: 4783612
    Abstract: A low-pressure sodium vapor discharge lamp provided with a discharge tube having an electrical lead-through conductor extending through the wall of the discharge tube to an internal lamp electrode. The lead-through is enveloped by a protective glass layer having a double bead construction. The layer portion facing the electrode is borate glass and is thinner than a second portion within the discharge tube wall which is lime glass. The lead-through construction thus obtained has a high resistance to sodium in the discharge tube and also to mechanical forces.
    Type: Grant
    Filed: June 4, 1984
    Date of Patent: November 8, 1988
    Assignee: U.S. Philips Corp.
    Inventor: Leo M. Sprengers
  • Patent number: 4774431
    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.
    Type: Grant
    Filed: September 29, 1986
    Date of Patent: September 27, 1988
    Assignee: North American Philips Lighting Corp.
    Inventors: John P. Dunn, Kent L. Collins, Norman R. King
  • Patent number: 4755712
    Abstract: A lead-in wire for use in an election lamp formed of molybdenum (undoped or doped with small amount of potassium and silicon) containing small amount of yttrium oxide and molybdenum boride is disclosed.
    Type: Grant
    Filed: December 9, 1986
    Date of Patent: July 5, 1988
    Assignee: North American Philips Corp.
    Inventors: Mohammad Mujahid, Richard Conrad
  • Patent number: 4749905
    Abstract: A high pressure discharge lamp includes a glass enclosure defining a hermetically sealed discharge space filled with an ionizable gas. A pair of electrodes extend into the discharge space, each electrode having a connection end and a discharge end, between which electrodes, in the operating condition of the lamp, a discharge takes place. A pair of holding portions on opposite sides of the glass enclosure and hold the respective connection ends of the electrodes. Metal lead foils connected to the connection ends are sealed in the holding portions. One or both of the connection ends is shaped, e.g., as a conical frustrum or as a wedge, such that the thickness of its inner end is reduced with respect to the thickness of its outward end. The joining portion of the glass enclosure is internally necked at a position adjacent the reduced thickness portion of the connection end.
    Type: Grant
    Filed: November 14, 1986
    Date of Patent: June 7, 1988
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasuki Mori, Masakazu Shibuya, Yoshiyuki Tokuda
  • Patent number: 4743803
    Abstract: A mounting arrangement for disposing a light source comprising an inner envelope within an outer envelope with both envelopes comprising a general service tungsten-halogen incandescent lamp is disclosed. The mounting arrangement has parameters which are selected in accordance with the ratio between the natural frequency characteristics of the filament of the light source and the mounting arrangement itself. The selected ratios of the natural frequencies of the filament and the mounting arrangement reduce the typically experienced shock vibrations of the general service lamp that are transmitted to the filament and thereby improves the overall life expectancy of the general service incandescent lamp.
    Type: Grant
    Filed: May 15, 1987
    Date of Patent: May 10, 1988
    Assignee: General Electric Company
    Inventors: Robert M. Lanese, Dean R. Tener, Charles F. Hickey, III, Nicholas E. Korenowski
  • Patent number: 4714858
    Abstract: In certain electric lamps, the lamp cap has a rectangular metal sleeve (10), which is fixed around the pinch (3) of the lamp vessel (1). The sleeve (10) also surrounds an insulator body (12), which immovably encloses a contact member (13). The contact member (13) is secured to a current supply conductor (4) of the lamp. In the lamp according to the invention, the insulator body (12) is immovably held in the sleeve (10) by depressions (16) in the corners (14) of said sleeve, which engage a respective recess in the insulator body (12).
    Type: Grant
    Filed: March 5, 1987
    Date of Patent: December 22, 1987
    Assignee: U.S. Philips Corporation
    Inventor: Rudolf Sanders
  • Patent number: 4712040
    Abstract: A high pressure discharge lamp having a wire connected to at least one of the electrode assemblies of its arc tube. The wire is formed with two separated legs joined at a common point. The legs are both bent toward the common point. The distance between the legs of the wire contracts and expands to compensate for the expansion and contraction of the lamp's arc tube as the lamp is turned on and off.
    Type: Grant
    Filed: November 19, 1985
    Date of Patent: December 8, 1987
    Assignee: North American Philips Corporation
    Inventors: Samuel A. Carleton, Norman R. King
  • Patent number: 4703221
    Abstract: 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.
    Type: Grant
    Filed: April 18, 1986
    Date of Patent: October 27, 1987
    Inventors: Carlos G. Ochoa, German C. Aguilar, Arnold E. Westlund, Jr.
  • Patent number: 4692656
    Abstract: A motor vehicle headlight is disclosed having a lug assembly with self-centering characteristics to facilitate alignment of the lug on the headlight reflector's boss.
    Type: Grant
    Filed: February 28, 1986
    Date of Patent: September 8, 1987
    Assignee: GTE Products Corporation
    Inventor: John C. Poyner
  • Patent number: 4587454
    Abstract: An improved electric lamp including an envelope of high silica glass material having a press sealed end wherein there is embedded a thin molybdenum foil which in turn forms part of the lamp's lead-in wire assembly. Crack formation in the area of the interface between the foil's external longitudinal surfaces and the compressed glass material is substantially prevented by providing the longitudinal sides of the foil with rough surfaces to assure substantial adhesion between the glass material and foil when the press sealed end is subjected to elevated temperatures (e.g., during pressing and/or subsequent lamp operation). These rough surfaces are provided by exposing the longitudinal sides of the foil to a sandblasting operation.
    Type: Grant
    Filed: May 17, 1984
    Date of Patent: May 6, 1986
    Assignee: GTE Products Corporation
    Inventors: Robert P. Bonazoli, Owtis J. Ragland, Jr.
  • Patent number: 4570104
    Abstract: A lamp having a ceramic molding between a cap and a lamp envelope, the current supply conductors passing through the molding between the cap and the envelope. The conductors pass through separate ducts in the molding, one of the conductors includes a fuse accommodated entirely within the duct, and that duct is sealed at an end adjacent the lamp cap by a coherent mass of material such as a base cement. Flashover from a fuse arc to either the other conductor or the lamp cap is prevented.
    Type: Grant
    Filed: October 24, 1983
    Date of Patent: February 11, 1986
    Assignee: U.S. Philips Corporation
    Inventors: Eduard J. P. Janssen, Victor R. Notelteirs
  • Patent number: 4556857
    Abstract: A magnetic deflection yoke is designed for use with a three gun 100.degree. in-line cathode ray tube (5) having a gun base no longer than 5.9 mm and achieves self-convergence and four-sided pincushion correction by means of the cathode ray tube and yoke only. The yoke includes a set of segmented saddle-type horizontal deflection coils (8) and a set of toroidal-type vertical deflection coils (4) which are wound on a permeable core (3) surrounding the horizontal deflection coils. An insulating coilform (1) between the horizontal and vertical deflection coils supports the coils and facilitates their mounting to the neck portion of the cathode ray tube envelope. Magnetic field collectors (6) essentially surround the vertical deflection coils and directs the magnetic lines of flux through the cathode ray tube envelope to produce a linear vertical deflection of the cathode ray beam.
    Type: Grant
    Filed: October 1, 1984
    Date of Patent: December 3, 1985
    Assignee: General Electric Company
    Inventor: James H. Logan
  • Patent number: 4550269
    Abstract: In a high pressure electric discharge lamp employing at least one ribbon seal incorporating a strip (3) of refractory metal foil extending through the wall of an envelope (1) of fused silica, and connected at its outer end to at least one external lead rod (5) and at its inner end to a rod (4) which constitutes or provides a support for an electrode of the lamp, with the foil and adjacent ends of the lead rod or rods and the electrode embedded in the envelope wall, wherein a said lead rod and/or an electrode rod is surrounded, over at least a part of the region of the rod which is embedded in the envelope wall, by a closely wound coil (6) of a relatively thin refractory metal wire. This enables the fused silica of the envelope to be pressed tightly around the rod in that region in manufacture while reducing the tendency to crack on cooling.
    Type: Grant
    Filed: October 31, 1983
    Date of Patent: October 29, 1985
    Assignee: The General Electric Company, p.l.c.
    Inventor: Angus B. Dixon
  • Patent number: 4549108
    Abstract: In devices having several electrical connections passing through a separation wall, feedthrough is realized by means of a flexible printed tape. The printed tape includes a number of electrical conductors, and is enveloped by a polyimide carrier which constitutes with an epoxy glue a very reliable permanent seal in separation walls of both metal and ceramic materials.
    Type: Grant
    Filed: May 23, 1983
    Date of Patent: October 22, 1985
    Assignee: U.S. Philips Corporation
    Inventor: Joannes L. G. Hermens
  • Patent number: 4531074
    Abstract: Electrical current supply terminal, especially for discharge tubes of light sources having a high pressure gas discharge.The invention is concerned with an electrical feed through, especially for discharge tubes of light sources having high pressure gas discharge, which current supply terminal is passed through a ceramic material, preferably from aluminum oxide and with a binding material is hermetically binded thereto, the heat expansion coefficient of which is appropriately selected and which is preferably vitreous enamel.In order to eliminate the difficulties resulting from the different heat expansion coefficient of ceramics, binding material and the metal material, the feed through is formed from a bundle of metallic threads.The bundle comprises preferably strands or braids and as material preferably molybdenum or tungsten is used.
    Type: Grant
    Filed: February 22, 1983
    Date of Patent: July 23, 1985
    Assignee: Tungsram Rt.
    Inventors: Janos Nagy, Endre Oldal
  • Patent number: 4517629
    Abstract: A motor vehicle headlight wherein plastic reflector and lens components are utilized to house a tungsten-halogen lamp capsule therein. Forming part of the rear portion of the plastic reflector is an upstanding portion for each of the headlight's terminal means. Each upstanding portion includes a surface for having the metallic lug member of the terminal means positioned thereon. Located within an upper part of the upstanding portion is an annular reservoir which surrounds the opening through which a support wire of the lamp capsule component passes. This reservoir is designed for accumulating excess quantities of adhesive used during headlight assembly, particularly during the operation where the lug member is mechanically secured to a metal eyelet which also forms part of the terminal means.
    Type: Grant
    Filed: January 19, 1983
    Date of Patent: May 14, 1985
    Assignee: GTE Products Corporation
    Inventors: Kenneth E. Alexander, Robert J. Marshall
  • Patent number: 4506194
    Abstract: In a cathodoluminescent lamp of the type having an electrically conductive coating forms the anode on the interior surface of the bulb wall, a phosphor coating overlies the anode coating and an electron emissive cathode below a grid, the lead to the anode passes through a glass tube, additional to the exhaust tube, incorporated in the pinched foot tube, and is sealed through the pinch, and the contact between the anode lead and the anode coating on the bulb is provided by a bent metal strip attached to envelope the neck and partially covered by the anode coating, which extends partly down the neck, the end of the anode lead being engaged with an upstanding portion of the contact strip.
    Type: Grant
    Filed: May 16, 1983
    Date of Patent: March 19, 1985
    Assignee: The General Electric Company p.l.c.
    Inventors: Sydney A. R. Rigden, Ian J. H. Sweet
  • Patent number: 4489252
    Abstract: A metal sleeve 5 grips the press stem 4 of lamp bulb 1. The metal sleeve, ich is set in the metal base structure 10, has a groove 13 at its outer surface. One end 3a of a current lead-in wire 3 is placed in the groove, contacting the metal base shell 10 which thereby can be made a side contact for the lamp. The placement of the wire end 3a in the groove of the metal sleeve 5 avoids interference with adjustment and focussing of the lamp in the base shell.
    Type: Grant
    Filed: September 10, 1982
    Date of Patent: December 18, 1984
    Assignee: Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
    Inventor: Fritz Eckhardt
  • Patent number: 4456947
    Abstract: A motor vehicle headlight having an improved lug and eyelet construction in which there is a reservoir formed between the lug and a boss formed on the reflector. This reservoir is for trapping and containing excess adhesive which is present during the assembly of such headlights.
    Type: Grant
    Filed: June 7, 1982
    Date of Patent: June 26, 1984
    Assignee: GTE Products Corporation
    Inventor: Kenneth E. Alexander
  • Patent number: 4453106
    Abstract: A lamp comprising a tubular quartz envelope having a mounting base compression fitted to one end thereof.
    Type: Grant
    Filed: July 24, 1980
    Date of Patent: June 5, 1984
    Assignee: The Perkin-Elmer Corporation
    Inventor: Carlo La Fiandra
  • Patent number: 4437039
    Abstract: High-intensity-discharge (HID) sodium lamp has a starting aid comprising a conducting ceramic which is hermetically sealed to and extends through an alumina arc tube at least at one end thereof to form an electrically conducting path. The conducting ceramic is fused to the alumina arc tube and is electrically conductive by virtue of having embedded therein a small percentage of finely divided refractory metal. At least during starting, the conducting ceramic is electrically connected through a resistor to the opposite lamp electrode and, as a result, on application of energizing potential, a glow discharge is established between an arc-tube-interior portion of the conducting ceramic and the adjacent electrode to ionize the atmosphere within the arc tube and facilitate lamp starting.
    Type: Grant
    Filed: October 25, 1979
    Date of Patent: March 13, 1984
    Assignee: North American Philips Electric Corp.
    Inventor: Daniel A. Larson
  • Patent number: 4434386
    Abstract: A process for forming lamp capsules such as in the manufacture of miniature arc lamps wherein the bulb portion of the capsule is formed by blowing molten glass into a mold while simultaneously press sealing the lead assembly. The molding and sealing process is accomplished with heat application by means of a press foot assembly closed for a predetermined period of time such as one second to press seal the blank capsule against the lead assembly with one portion of the press foot assembly, and simultaneously to blow mold the blank capsule into another preformed portion of the press foot assembly to form the bulb portion of the lamp capsule.
    Type: Grant
    Filed: December 28, 1981
    Date of Patent: February 28, 1984
    Assignee: GTE Products Corporation
    Inventor: Gary E. Lowe
  • Patent number: 4426598
    Abstract: Substantially completely deoxidized dispersion strengthened copper leads in incandescent electric lamps.
    Type: Grant
    Filed: February 2, 1982
    Date of Patent: January 17, 1984
    Assignee: SCM Corporation
    Inventor: Charles I. Whitman
  • Patent number: 4415830
    Abstract: An improved inlead construction for an electric lamp is disclosed which utilizes an iron alloy containing sufficient silicon to avoid transformation of the inlead from the alpha ferrite phase to the gamma austenite phase at lamp operation temperatures. This precludes debilitating deformation of the inlead wires caused by on-off cycling of the lamp and concomitant cycling of the wire through the alpha to gamma transformation range. Such deformation can lead to structural or operational failure if the inleads become disconnected or electrically shorted from the resistive filament during lamp operation. In a preferred lamp construction, a pair of the improved inlead wires serve as the sole means of physical support for a resistive incandescent filament directly connected thereto and said inlead wires can further be coated with a dissimilar metal for higher lamp loading requirements in order to help avoid iron migration which can produce deterioration of the resistive incandescent filament.
    Type: Grant
    Filed: August 31, 1981
    Date of Patent: November 15, 1983
    Assignee: General Electric Company
    Inventors: John W. Pugh, Francis W. Pikus, James A. Graves, John E. McMillan, John L. Walter
  • Patent number: 4404491
    Abstract: In some types of electric incandescent lamps a cylindrical contact cap is connected to the part of the current supply conductor projecting beyond the pinch seal of the lamp envelope, which cap is mounted in an insulator sleeve. In known lamps the ceramic insulator sleeve 9 is secured on the pinch seal by means of cement.In lamps according to the invention, the insulator sleeve is coupled to the contact cap by means of a metal spring.
    Type: Grant
    Filed: October 27, 1980
    Date of Patent: September 13, 1983
    Assignee: U.S. Philips Corporation
    Inventors: Gustaaf F. R. Siaens, Johannes M. A. Van der Heijden
  • Patent number: 4400646
    Abstract: Electric lamp inlead wires are provided with bends to shape them into desired configurations for holding a filament or arc tube. The bends are shaped to provide a small reverse bend section. This prevents an inherent springback tendency at the bends, and improves the permanency of the bent shapes.
    Type: Grant
    Filed: March 9, 1981
    Date of Patent: August 23, 1983
    Assignee: General Electric Company
    Inventor: Edwin J. Lohrey
  • Patent number: 4396861
    Abstract: The invention contemplates lead-through structure for the high-voltage electrode of an electron microscope or the like, in conjunction with shaping of the high-voltage electrode and of the body of insulating material via which the lead-through is supported, in reference to metal envelope structure. The high-voltage electrode has a step-wise enlargement, and the surface of the insulating material which is exposed to the vacuum commences at the start of the step-wise enlargement. As a result, the field strength along the vacuum-exposed insulator surface is so influenced that a minimum electric field strength is produced at the boundary line between the vacuum and the high-voltage electrode. The further result is to prevent occurrence of microdischarges.
    Type: Grant
    Filed: September 5, 1980
    Date of Patent: August 2, 1983
    Assignee: Carl Zeiss-Stiftung
    Inventors: Dietrich Hoffmeister, Wilhelm Egle
  • Patent number: 4381472
    Abstract: In an electronic tube, a metal cylindrical member having, at the end, a cylindrical joint portion is bonded by brazing to the end of ceramic cylindrical member to form a hermetic seal structure. The metal cylindrical member is made of iron and dimensions thereof are specified such that the cylindrical joint portion has a wall thickness of 0.5 mm or less and a height of 1 mm or more.
    Type: Grant
    Filed: July 31, 1980
    Date of Patent: April 26, 1983
    Assignee: Hitachi, Ltd.
    Inventors: Yoshitada Sakauchi, Masayuki Hikiba
  • Patent number: 4379978
    Abstract: A cathode ray picture has a neck terminated by a plurality of electrically conductive pins extending axially from the neck terminus. The tube is characterized by each pin having an electrically conductive wire attached thereto. A base in abutting relationship to the neck terminus comprises an insulative member filled with an electrically insulative adhesive. The base has a closed end facing away from the neck terminus. The base includes a plurality of apertures equal in number to the wires for spacedly receiving and passing the wires. The wires are electrically isolated one from the others by the spacing and the insulative adhesive, and the base is adhered to the neck terminus by the adhesive.
    Type: Grant
    Filed: March 20, 1981
    Date of Patent: April 12, 1983
    Assignee: Zenith Radio Corporation
    Inventor: Richard L. Hockenbrock
  • Patent number: 4370589
    Abstract: The inner ends of the lead-in wires of an electric incandescent lamp are serrated and welded to uncoiled leg portions of the tungsten filament so that the members are fused to one another at a plurality of spaced points or locations and provide strong reliable electrical junctures. The filament leg portions are in bridging relationship with the serrations on the ends of the lead wires and form high-resistance areas of contact during the welding operation that permits high-quality welds to be made efficiently without the use of a flux material, even in halogen-cycle type lamps that require the welding of molybdenum lead wires to a tungsten filament.
    Type: Grant
    Filed: September 2, 1980
    Date of Patent: January 25, 1983
    Assignee: Westinghouse Electric Corp.
    Inventors: Aristide R. DeCaro, Henry M. Nixon
  • Patent number: 4362962
    Abstract: In a gas discharge over-voltage arrester a welded connection is provided between electrodes thereof and connection wires preferably by means of long-time resistance welding of copper to copper. A respective peg with a diameter of approximately 9/10 and a length of approximately 6/10 of the diameter of the connection wire projects from the surfaces of the electrodes to be connected. The connection wire is welded blunt to the end surface of the peg.
    Type: Grant
    Filed: January 16, 1981
    Date of Patent: December 7, 1982
    Assignee: Siemens Aktiengesellschaft
    Inventor: Gerhard Lange
  • Patent number: 4326146
    Abstract: The lead-in wires of a fluorescent lamp (or similar device) are electrically connected to the base pins by mechanical means instead of welding or soldering the members to each other in the conventional manner during the lamp-basing operation. This is achieved by forming the pins from solid metal or heat-tempered "stiff" sheet metal, placing the ends of the precut lead wires in a pair of apertures provided in the plastic insulator portion of the base, and then force-fitting the ends of the rigid metal pins into the apertures so that they are firmly anchored in the insulator portion--thus clamping the pins in positive engagement with the captured ends of the lead wires and concurrently completing the base assembly.
    Type: Grant
    Filed: April 2, 1980
    Date of Patent: April 20, 1982
    Assignee: Westinghouse Electric Corp.
    Inventors: Vernon L. Plagge, Clair M. Rively
  • Patent number: 4324998
    Abstract: The lead-in wires of a fluorescent lamp are electrically connected to the base pins by mechanical means instead of welding or soldering the members to each other in the conventional manner. This is achieved by forming the pins from solid metal or rigid heat-tempered sheet metal, trimming the lead wires to a predetermined length such that the ends thereof extend beyond the plastic insulator portion of the base when the lead wires are inserted through a pair of apertures provided in the insulator and the base is placed on the sealed end of the lamp envelope, partially inserting the metal pins in the insulator apertures, wrapping the protruding ends of the lead wires around the medial portions of the respective pins, and then force fitting the inner ends of the metal pins into the apertures so that they are firmly anchored in the plastic insulator and the wrapped-around portions of the lead wires are recessed within shallow cavities provided in the outer face of the insulator.
    Type: Grant
    Filed: April 2, 1980
    Date of Patent: April 13, 1982
    Assignee: Westinghouse Electric Corp.
    Inventors: John F. Gilmore, Stanley A. Lopenski
  • Patent number: 4304450
    Abstract: A gas discharge display panel may be used for display purposes despite the presence of open conductors in the panel. Four termination areas, each including a plurality of repair pads are provided, one at each end of each of the two conductor arrays in the panel. One end of each conductor in each array is connected to a respective repair pad in the adjacent termination area. A repair cable having a plurality of conductors runs from the termination area at one end of a conductor array to the termination area at the other end of the array. To repair an open, opposite ends of a respective repair cable conductor are connected to the open conductor's repair pads.By virtue of the connection of the opposite ends of a repair cable conductor to the open conductor's repair pads, both ends of the open conductor are electrically connected. When an open conductor is energized at one end, the entire body of the open conductor is at the same electrical potential despite the presence of the open.
    Type: Grant
    Filed: December 17, 1979
    Date of Patent: December 8, 1981
    Assignee: International Business Machines Corporation
    Inventors: Malvin S. Bilsback, Michael J. Costa
  • Patent number: RE31519
    Abstract: A lead-in seal of the type having a metal foil seal member sealed into an envelope, comprising a relatively narrow intermediate foil tab member connected between the foil seal member and a conductor. The result is reduced stress in the seal and less likelihood of cracking.
    Type: Grant
    Filed: November 12, 1982
    Date of Patent: February 7, 1984
    Assignee: General Electric Company
    Inventor: John C. Sobieski