Patents Represented by Attorney, Agent or Law Firm William H. McNeill
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Patent number: 6779266Abstract: A connecting pin (10) for an anode contact (11) (shown more completely in FIG. 2). The pin (10) has a body (12) with a longitudinal axis (14). A contact head (16) is formed at a proximal portion of the body (12) and a base (18) is formed at a distal portion of body (12). An intermediate shank (20) connects the head (16) and the base (18). The head (16), base (18) and intermediate shank (20) are all symmetrically arrayed about the longitudinal axis (14). The shank (20) has a first diameter (D,) and the contact head (16) has at least one lateral dimension (D2) that is greater than the shank diameter (D). The base (18) has a diameter (D3) that is greater than the shank diameter (D) and has a surface (22) that is planar and substantially orthogonal to the longitudinal axis (14).Type: GrantFiled: August 30, 2003Date of Patent: August 24, 2004Assignee: Osram Sylvania Inc.Inventors: Hossein Aghamehdi, Jack L. Burwick
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Patent number: 6759618Abstract: The invention relates to a method for connecting a contact plate (2) a lamp cap to the supply conductor wire (4) which is passed through an aperture (2a) in the contact plate (2). With the aid of a wire (5) which serves as filler, the supply conductor wire (4) and the contact plate (2) are soldered together, by generating an arc between the additional wire (5) and the supply conductor wire (4) or the contact plate (2). The solidified molten material of the additional wire (5) closes off the aperture (2a) and produces a reliable soldered join between the supply conductor wire (4) and the contact plate (2). The polarity of the electric voltage used to generate the arc is advantageously such that the additional wire (5) acts as an anode and the contact plate (2) or the supply conductor wire (4) acts as a cathode. The soldering process according to the invention advantageously takes place under an inert-gas atmosphere.Type: GrantFiled: September 27, 2001Date of Patent: July 6, 2004Assignee: Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbHInventors: Wolf-Ruediger Becker, Martin Fornalski
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Patent number: 6731069Abstract: A mercury-free metal halide arc lamp having an arc vessel of fused silica, an aspect ratio greater than 5, and containing a noble gas such as xenon, argon or krypton and a metal halide. In a preferred embodiment, the arc vessel has a diameter of 8 mm and a length of 80 mm, a fill of sodium/scandium iodides and a buffer gas of xenon.Type: GrantFiled: October 7, 1999Date of Patent: May 4, 2004Assignee: Osram Sylvania Inc.Inventors: P. Bruce Newell, Nanu Brates, Elliot F. Wyner
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Patent number: 6686043Abstract: A method of coating phosphor particles comprises introducing an inert gas into a reaction vessel and charging phosphor particles into the reaction vessel. The reaction vessel is then heated to a reaction temperature and a coating precursor is introduced while the temperature is maintained for a time sufficient to saturate the phosphor particles with the precursor. Thereafter, continuous precursor is introduced into the reaction vessel, along with an oxygen/ozone mixture. The inert gas flow, oxygen/ozone mixture flow and further precursor are supplied for a time sufficient to coat the phosphor particles.Type: GrantFiled: October 17, 2000Date of Patent: February 3, 2004Assignee: Osram Sylvania Inc.Inventors: Chen-Wen Fan, Richard G. W. Gingerich, Dale E. Benjamin
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Patent number: 6674001Abstract: A solder glass which has, by weight: about 60 to 67% Sb2O3; about 27 to 32% B2O3; and from greater than 0 to 10% ZnO. The glass has a softening point between 388 and 466° C., depending on the ZnO content. The glass can be employed as a molten seal in electrical devices such as tungsten halogen or metal halide lamps.Type: GrantFiled: February 23, 1995Date of Patent: January 6, 2004Assignee: Osram Sylvania Inc.Inventors: Richard C. Marlor, Paul W. Salvi
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Patent number: 6623807Abstract: A method of increasing the color-stability of an electroluminescent phosphor which comprises the steps of forming the phosphor and then firing the formed phosphor in a vacuum in the presence of a material selected from the group of Eu, Ce, and Sm for a time sufficient to provide said increase in color-stability.Type: GrantFiled: July 20, 2001Date of Patent: September 23, 2003Assignee: Osram Sylvania Inc.Inventors: Richard G. W. Gingerich, Clarence D. Vanderpool
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Patent number: 6617790Abstract: A metal halide lamp has a ceramic discharge vessel with two ends (5) which are closed off by sealing means which enclose a capillary tube (11). An electrically conductive lead-through (9) is passed in a vacuum-tight manner through a bore in the capillary tube (11). The capillary tube (11) comprises two sections (20, 21) which are arranged axially one behind the other, the diameter of the bore of the inner section amounting to at most 90% of the diameter of the bore in the outer section.Type: GrantFiled: May 16, 2001Date of Patent: September 9, 2003Assignee: Patent-Treuhand-Gesellschaft f. Elektrische Gluehlampen mbHInventors: Uwe Fidler, Karen Twesten
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Patent number: 6562260Abstract: A method of recovering a base phosphor from encapsulated phosphors, which comprises the steps of selecting a recovery vessel including a magnetic stir bar; adding to the recovery vessel, deionized water, a first batch of concentrated hydrochloric acid and encapsulated phosphor to form a stirred suspension; heating the stirred suspension to about 90° C. for about 2 hours; settling the stirred suspension; decanting the mother liquor and slurrying the remaining solids with a second batch of hydrochloric acid and water; decanting and washing the remaining solids with deionized water; filtering the remaining solids to form a filter cake; heating the filter cake at 110° C. in air for a time sufficient to form a dried filter cake; and screening the dried filter cake through a −325 mesh screen to yield a recovered base phosphor.Type: GrantFiled: September 26, 2001Date of Patent: May 13, 2003Assignee: Osram Sylvania Inc.Inventors: Richard G. W. Gingerich, Chen-Wen Fan, Keith A. Klindinst
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Patent number: 6555021Abstract: A process for improving the half-life of ZnS:Cu,Cl electroluminescent phosphor wherein the improvement comprises firing a previously first fired material comprised of ZnS:Cu,Cl with a quantity of MgSO4.7H2O to form a second fired material. The quantity is from 0.015 to 0.15 mole of MgSO4.7H2O/mole of ZnS.Type: GrantFiled: September 1, 2001Date of Patent: April 29, 2003Assignee: Osram Sylvania Inc.Inventors: Butchi Reddy Vaddi, Shellie K. Northrop
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Patent number: 6518694Abstract: A stud for mounting a shadowmask in a cathode ray tube comprises a tubular body symmetrically arrayed about a longitudinal axis and having a given diameter and a spherical projection fixedly mounted upon one end of the tubular body. The sphere has a diameter greater than the given diameter. In alternate embodiments the tubular body can have plural diameters.Type: GrantFiled: August 22, 2000Date of Patent: February 11, 2003Assignee: Osram Sylvania Inc.Inventor: Juan Rossi
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Patent number: 6509058Abstract: A phosphor particle has thereon a moisture resistant treatment of a metallic nitride. By moisture resistant is meant a condition allowing the phosphor particle to function in a humid atmosphere for a significantly longer period of time than an untreated particle. The method of making such phosphors comprises the steps of introducing an inert gas into a reaction vessel; charging phosphor particles into the reaction vessel; heating the reaction vessel to a reaction temperature; introducing a nitride coating precursor into the reaction vessel; introducing a co-reactant into the reaction vessel; and maintaining the inert gas flow, co-reactant flow and precursor supply for a time sufficient to moisture-proof the phosphor particles. The nitride treated phosphor particles produced by this method, which can include the deposition of a nitride coating on the particles, have excellent efficacy ratings and strong luminance values in lamps after 100 hours use in high humidity (i.e., >95%).Type: GrantFiled: May 18, 2001Date of Patent: January 21, 2003Assignee: Osram Sylvania Inc.Inventors: Keith A. Klinedinst, Robert F. Clark
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Patent number: 6486602Abstract: In the case of an electrode (5) for a high-pressure discharge lamp, at least a part of the surface of the electrode is covered with a dendritic layer (13) made from high-melting-point metal. A substantially longer service life is achieved thereby.Type: GrantFiled: March 8, 2000Date of Patent: November 26, 2002Assignee: Patent-Treuhand-Gesellschaft fuer elektrische Gluehlampen mbHInventor: Carsten Setzer
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Patent number: 6483241Abstract: A mercury-free metal halide lamp with a light efficiency of at least 70 Im/W and a color rendering index of at least 80 has a ceramic discharge vessel, into which electrodes are introduced in a vacuum-tight manner. The fill comprises the following components: an inert gas which acts as buffer gas, a compound of a halogen X with at least one of the metals hafnium and/or zirconium (referred to below as metal halide HZM), this halide being referred to below as HZH for short, HZH simultaneously performing tasks of voltage gradient formation and of promoting the cycle, a light generator comprising at least a further metal halide, at least one further metal halide MYn which vaporizes readily and is used as voltage gradient generator, the specific molar content of HZH being greater than or equal to 3 &mgr;mol/cm3. In addition, the following relationship applies: 5≦(X+Y)/HZM≦15, resulting in a lamp service life of more than 5000 hours.Type: GrantFiled: December 6, 1999Date of Patent: November 19, 2002Assignee: Patent-Treuhand-Gesellschaft fuer elektrische Gluehlampen mbHInventor: Klaus Stockwald
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Patent number: 6469445Abstract: A metal halide lamp with high color rendering index, greater then 80, with substantially constant color temperature through life. The lamp arc discharge vessel has a small volume, i.e., less than 1 cc, and contains iodides of sodium, scandium, lithium, dysprosium, and thallium along with mercury, a buffer gas and scandium metal. The addition of the scandium metal does not raise the arc discharge vessel temperature and significantly reduces the color temperature decline during life.Type: GrantFiled: June 17, 1999Date of Patent: October 22, 2002Assignee: Osram Sylvania Inc.Inventors: Edward H. Nortrup, David M. Hrubowchak, John A. Scholz
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Patent number: 6469428Abstract: A lamp bulb (1) made from glass is sealed at one end by a pinch (2). A base (5) is fastened on the pinch (2) by means of a metal spring (6). The base (5) has a holder (7) loosely adapted to the pinch (2). The metal spring (6; 26) is bent in a U-shaped fashion and comprises a base part (11) and two limbs (12, 13) which embrace the pinch, the fastening of the base (5) being accomplished by virtue of the fact that one limb (12) is aligned essentially parallel to the longitudinal axis, but simultaneously has a transverse extent accessible to spring forces, the transverse extent of this limb being stressed by the holder (7) of the base.Type: GrantFiled: December 6, 1999Date of Patent: October 22, 2002Assignee: Patent-Treuhand-Gesellschaft fuer elektrische Gluehlampen mbHInventors: Joachim Thiel, Ernst Muehlich, Dieter Trypke
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Patent number: 6469446Abstract: Mercury-free metal halide lamp with a warm white luminous color, the fill of which comprises the following components: an inert gas which acts as a buffer gas; a first group of metal halides (MH), the boiling point of which is above 1000° C. (preferably above 1150° C.), the first group comprising at least Dy and Ca used simultaneously as metals, and the molar ratio of the two metal halides Ca-MH:Dy-MH being between 0.1 and 10; these are components with a low volatility which are present in saturated form; a second group of metal halides, the boiling point of which is below 1000° C. (preferably below 900° C.Type: GrantFiled: August 3, 2000Date of Patent: October 22, 2002Assignee: Patent-Treuhand-Gesellschaft fuer elektrische Gluehlampen mbHInventor: Klaus Stockwald
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Patent number: 6462478Abstract: A safety switch for a lamp having an outer envelope with a light source capsule mounted therein. The lamp has a base for connection to an electrical circuit via a mating socket and has in-leads appropriately connected to the base and to the light source capsule whereby electrical power can be supplied to the light source. A fuse is operatively mounted to one of the in-leads in the base. The safety switch is mounted in the outer envelope and tensioned thereagainst whereby breakage of the outer envelope causes the safety switch to release and electrically contact the in-leads causing a short circuit and opening the fuse, thereby removing power from the capsule.Type: GrantFiled: August 10, 2001Date of Patent: October 8, 2002Assignee: Osram Sylvania Inc.Inventors: James E. Oetken, Joseph P. Gallant, Gerald A. Puracchio
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Patent number: 6462476Abstract: The invention relates to a lighting system with a high-pressure discharge lamp and a control unit (W, FS, C1, W) for the high-pressure discharge lamp (1), where the lamp base (10) has at least two housing parts (10a, 10b) which are connected to one another by a releasable closure (22). The first housing part (10a) has fastening means (24) for the at least one lamp vessel (11). The high-voltage part (TR) of the ignition device (TR, FS, C1) is accommodated in the first housing part (10a), whilst the second housing part (10b) is provided with the electrical connections (20) for the high-pressure discharge lamp (1) and preferably contains the remaining components (FS, C1) of the ignition device and the voltage converter (W) of the control unit.Type: GrantFiled: June 22, 1999Date of Patent: October 8, 2002Assignee: Patent-Treuhand-Gesellschaft fuer elektrische Gluehlampen mbHInventors: Guenther Hirschmann, Bontcho Gotchev, Arnulf Rupp
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Patent number: 6457637Abstract: A production blank 10 for forming a parallelepipedonal shipping and display carton has a plurality of spaced apart tear lines and fold lines. A first flap 12 joins to a cover 14 by a tear line 16 on a first edge of the cover. A front side 18 joins the cover 14 on a second edge of the cover 14 by a fold line 19. A bottom 20 joins the first side on a second edge of the side 16 by a tear line 22. A back side 24 is joined to the bottom on a second edge of the bottom by a fold line 26; and a plurality of lateral flaps 28, 28′attached to the top, and 30, 30′ attached to the bottom and 32, 32′ and 34, 34′ attached, respectively, to the front and back sides. The lateral flaps form opposite sides of the parallelepipedon. All of the lateral flaps are attached by fold lines and at least some of the lateral flaps have glue thereon.Type: GrantFiled: February 5, 2002Date of Patent: October 1, 2002Assignee: Osram Sylvania Inc.Inventors: Gary R. Fritz, James J. Salvamoser
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Patent number: 6456002Abstract: A phosphor particle has thereon a moisture resistant treatment of a metallic nitride. By moisture resistant is meant a condition allowing the phosphor particle to function in a humid atmosphere for a significantly longer period of time than an untreated particle. The method of making such phosphors comprises the steps of introducing an inert gas into a reaction vessel; charging phosphor particles into the reaction vessel; heating the reaction vessel to a reaction temperature; introducing a nitride coating precursor into the reaction vessel; introducing a co-reactant into the reaction vessel; and maintaining the inert gas flow, co-reactant flow and precursor supply for a time sufficient to moisture-proof the phosphor particles. The nitride treated phosphor particles produced by this method, which can include the deposition of a nitride coating on the particles, have excellent efficacy ratings and strong luminance values in lamps after 100 hours use in high humidity (i.e., >95%).Type: GrantFiled: March 29, 1999Date of Patent: September 24, 2002Assignee: Osram Sylvania Inc.Inventors: Keith A. Klinedinst, Robert F. Clark