With Mercury Patents (Class 429/230)
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Patent number: 10900617Abstract: A light bulb apparatus has a plurality of LED modules, a substrate, a driver circuit board, a plastic piece, a radiator and a lamp cap. The substrate has aluminum material for mounting the plurality of LED modules, a first connection end and a second connection end. The first connection end and the second connection end are electrically connected to the plurality of LED modules. The plastic piece with a guiding groove is used for inserting the driver circuit board. The radiator has a top plate and a side wall. The substrate is fixed on the top plate, and the side wall are connected to the plastic piece.Type: GrantFiled: August 31, 2020Date of Patent: January 26, 2021Assignee: XIAMEN ECO LIGHTING CO. LTD.Inventors: Qiyuan Wang, Yunnan Lin, Liping Lin
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Patent number: 10794546Abstract: A light bulb apparatus has a plurality of LED modules, a substrate, a driver circuit board, a plastic piece, a radiator and a lamp cap. The substrate has aluminum material for mounting the plurality of LED modules, a first connection end and a second connection end. The first connection end and the second connection end are electrically connected to the plurality of LED modules. The plastic piece with a guiding groove is used for inserting the driver circuit board. The radiator has a top plate and a side wall. The substrate is fixed on the top plate, and the side wall are connected to the plastic piece.Type: GrantFiled: April 14, 2020Date of Patent: October 6, 2020Assignee: XIAMEN ECO LIGHTING CO. LTD.Inventors: Qiyuan Wang, Yunnan Lin, Liping Lin
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Patent number: 10797437Abstract: A socket for receipt of a light bulb to connect the light bulb to a power source wherein the socket has an external configuration adjacent the socket opening configured to cooperate with an attachment such as a cap or decorative element. The socket further includes an external configuration along its outer side surface and/or its bottom surface configured to cooperate with an attachment such as a mounting clip or stake.Type: GrantFiled: November 14, 2019Date of Patent: October 6, 2020Assignee: Wintergreen Corp.Inventors: William Hale, Frank Skinner
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Patent number: 10655796Abstract: A light bulb apparatus has a plurality of LED modules, a substrate, a driver circuit board, a plastic piece, a radiator and a lamp cap. The substrate has aluminum material for mounting the plurality of LED modules, a first connection end and a second connection end. The first connection end and the second connection end are electrically connected to the plurality of LED modules. The plastic piece with a guiding groove is used for inserting the driver circuit board. The radiator has a top plate and a side wall. The substrate is fixed on the top plate, and the side wall are connected to the plastic piece.Type: GrantFiled: October 31, 2019Date of Patent: May 19, 2020Assignee: XIAMEN ECO LIGHTING CO. LTD.Inventors: Qiyuan Wang, Yunnan Lin, Liping Lin
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Patent number: 10495265Abstract: A light bulb apparatus has a plurality of LED modules, a substrate, a driver circuit board, a plastic piece, a radiator and a lamp cap. The substrate has aluminum material for mounting the plurality of LED modules, a first connection end and a second connection end. The first connection end and the second connection end are electrically connected to the plurality of LED modules. The plastic piece with a guiding groove is used for inserting the driver circuit board. The radiator has a top plate and a side wall. The substrate is fixed on the top plate, and the side wall are connected to the plastic piece.Type: GrantFiled: June 18, 2019Date of Patent: December 3, 2019Assignee: XIAMEN ECO LIGHTING CO. LTD.Inventors: Qiyuan Wang, Yunnan Lin, Liping Lin
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Patent number: 10100983Abstract: A light bulb apparatus has a plurality of LED modules, a substrate, a driver circuit board, a plastic piece, a radiator and a lamp cap. The substrate has aluminum material for mounting the plurality of LED modules, a first connection end and a second connection end. The first connection end and the second connection end is electrically connected to the plurality of LED modules. The plastic piece with a guiding groove is used for inserting the driver circuit board. The radiator has a top plate and a side wall. The substrate is fixed on the top plate, and the side wall are connected to the plastic piece.Type: GrantFiled: April 3, 2018Date of Patent: October 16, 2018Assignee: XIAMEN ECO LIGHTING CO. LTD.Inventors: Qiyuan Wang, Yunnan Lin, Liping Lin
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Patent number: 9841148Abstract: An electrical connection structure (100) of a lamp cap, comprising a substrate (20), a plastic piece (30) and a lamp cap (60), wherein the lamp cap (60) comprises a first electrode (61) and a second electrode (62). The first electrode (61) is insulated from the second electrode (62) and the second electrode (62) is fixed to the first electrode (61). The first electrode (61) is electrically connected to the first connection end (21). The second electrode (62) is of a rod-shaped structure. The second connection end (22) comprises a connection part (222) and a contact part (221). The connection part (222) is electrically connected to the electronic element on the substrate (20), and the contact part (221) is electrically connected to one end of the second electrode (62). The electrical connection structure (100) of a lamp cap has the advantages of simple structure and convenient automation of assembly.Type: GrantFiled: June 26, 2017Date of Patent: December 12, 2017Assignee: XIAMEN ECO LIGHTING CO. LTD.Inventors: Qiyuan Wang, Yunnan Lin, Liping Lin
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Patent number: 9719638Abstract: An electrical connection structure (100) of a lamp cap, comprising a substrate (20), a plastic piece (30) and a lamp cap (60), wherein the lamp cap (60) comprises a first electrode (61) and a second electrode (62). The first electrode (61) is insulated from the second electrode (62) and the second electrode (62) is fixed relative to the first electrode (61). The plastic piece (30) is arranged above the first electrode (61). An electronic element, and a first connection end (21) and a second connection end (22) which are electrically connected to the electronic element, are provided on the substrate (20). The first electrode (61) is electrically connected to the first connection end (21). The second electrode (62) is of a rod-shaped structure. The second connection end (22) comprises a connection part (222) and a contact part (221).Type: GrantFiled: February 14, 2017Date of Patent: August 1, 2017Assignee: XIAMEN ECO LIGHTING CO. LTD.Inventors: Qiyuan Wang, Yunnan Lin, Liping Lin
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Patent number: 9605811Abstract: An electrical connection structure (100) of a lamp cap, comprising a substrate (20), a plastic piece (30) and a lamp cap (60), wherein the lamp cap (60) comprises a first electrode (61) and a second electrode (62). The first electrode (61) is insulated from the second electrode (62) and the second electrode (62) is fixed relative to the first electrode (61). The plastic piece (30) is arranged above the first electrode (61). An electronic element, and a first connection end (21) and a second connection end (22) which are electrically connected to the electronic element, are provided on the substrate (20). The first electrode (61) is electrically connected to the first connection end (21). The second electrode (62) is of a rod-shaped structure.Type: GrantFiled: January 24, 2015Date of Patent: March 28, 2017Assignee: XIAMEN ECO LIGHTING CO. LTD.Inventors: Qiyuan Wang, Yunnan Lin, Liping Lin
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Publication number: 20140106241Abstract: An electrochemical cell has an electrode which includes a zinc-indium alloy as electrochemically active material, wherein the alloy is present in the form of particles and the entirety of the particles is composed of at least two particle fractions differing in indium concentration.Type: ApplicationFiled: October 15, 2013Publication date: April 17, 2014Applicant: VARTA Microbattery GmbHInventors: Cornelia Csrenko, Ulrich Kohls, Bernd Kreidler, Hermann Löffelmann, Andreas Rupp
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Patent number: 8389150Abstract: Composite current collectors containing coatings of metals, alloys or compounds, selected from the group of Zn, Cd, Hg, Ga, In, Tl, Sn, Pb, As, Sb, Bi and Se on non-metallic, non-conductive or poorly-conductive substrates are disclosed. The composite current collectors can be used in electrochemical cells particularly sealed cells requiring a long storage life. Selected metals, metal alloys or metal compounds are applied to polymer or ceramic substrates by vacuum deposition techniques, extrusion, conductive paints (dispersed as particles in a suitable paint), electroless deposition, cementation; or after suitable metallization by galvanic means (electrodeposition or electrophoresis). Metal compound coatings are reduced to their respective metals by chemical or galvanic means. The current collectors described are particular suitable for use in sealed primary or rechargeable galvanic cells containing mercury-fee and lead-free alkaline zinc electrodes.Type: GrantFiled: April 20, 2012Date of Patent: March 5, 2013Inventor: Klaus Tomantschger
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Patent number: 8182938Abstract: Composite current collectors containing coatings of metals, alloys or compounds, selected from the group of Zn, Cd, Hg, Ga, In, Tl, Sn, Pb, As, Sb, Bi and Se on non-metallic, non-conductive or poorly-conductive substrates are disclosed. The composite current collectors can be used in electrochemical cells particularly sealed cells requiring a long storage life. Selected metals, metal alloys or metal compounds are applied to polymer or ceramic substrates by vacuum deposition techniques, extrusion, conductive paints (dispersed as particles in a suitable paint), electroless deposition, cementation; or after suitable metallization by galvanic means (electrodeposition or electrophoresis). Metal compound coatings are reduced to their respective metals by chemical or galvanic means. The current collectors described are particular suitable for use in sealed primary or rechargeable galvanic cells containing mercury-free and lead-free alkaline zinc electrodes.Type: GrantFiled: May 3, 2011Date of Patent: May 22, 2012Inventor: Klaus Tomantschger
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Patent number: 7976976Abstract: Composite current collectors containing coatings of metals, alloys or compounds, selected from the group of Zn, Cd, Hg, Ga, In, Tl, Sn, Pb, As, Sb, Bi and Se on non-metallic, non-conductive or poorly-conductive substrates are disclosed. The composite current collectors can be used in electrochemical cells particularly sealed cells requiring a long storage life. Selected metals, metal alloys or metal compounds are applied to polymer or ceramic substrates by vacuum deposition techniques, extrusion, conductive paints (dispersed as particles in a suitable paint), electroless deposition, cementation; or after suitable metallization by galvanic means (electrodeposition or electrophoresis). Metal compound coatings are reduced to their respective metals by chemical or galvanic means. The current collectors described are particular suitable for use in sealed primary or rechargeable galvanic cells containing mercury-fee and lead-free alkaline zinc electrodes.Type: GrantFiled: February 1, 2008Date of Patent: July 12, 2011Assignee: Rosecreek Technologies Inc.Inventor: Klaus Tomantschger
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Patent number: 7524582Abstract: The invention is directed to a zinc powder or zinc alloy powder for alkaline batteries, which powder has a grain size distribution wherein 60 to 100 wt.-% of the particles, relative to the zinc powder or zinc alloy powder, have a diameter of from 40 to 140 ?m. The invention is also directed to an alkaline battery.Type: GrantFiled: June 5, 2006Date of Patent: April 28, 2009Assignee: Grillo-Werke AGInventors: Armin Melzer, Petra Merkel, Jochen Spiestersbach, Rudi Kube, Norbert Schulz
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Publication number: 20090081547Abstract: The present invention aims to achieve both safety upon shorting by a nail penetration and safety upon overcharging. In a lithium ion secondary battery including a positive electrode, a negative electrode, and a non-aqueous electrolyte, the positive electrode includes active material particles, the active material particles include secondary particles of the lithium composite oxide, and some of the secondary particles have a crack. At least a surface layer portion of the active material particles includes element Me of at least one selected from the group consisting of Mn, Al, Mg, Ca, Zr, B, W, Nb, Ta, In, Mo, and Sn. Element Me is distributed more in the surface layer portion compared with the inner portion of the active material particles.Type: ApplicationFiled: June 26, 2006Publication date: March 26, 2009Inventor: Kensuke Nakura
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Patent number: 7025612Abstract: A lampsocket having a porcelain body that has a base, a peripheral wall, and at least two of a rigid, longitudinal spacer projecting axially outwardly from the base. The longitudinal upper surfaces of the spacers engage opposite areas of the bottom of the base of the lamp. The lampsocket is intended for use with and to operate a class of lamps having a threaded base having an insulated extension from the central portion of the bottom of the lamp base, and a central button mounted on the insulated extension. The lampsocket can also accept, but can not make electrical contact with, other lamps that have a conventional base contact without the insulated extension.Type: GrantFiled: March 18, 2005Date of Patent: April 11, 2006Assignee: LSI Industries, Inc.Inventors: Michael J. Keilholz, Mark C. Reed, Robert E. Kaeser
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Patent number: 6333127Abstract: An electrochemical cell and method of assembling electrochemical cell having a container, an anode, a cathode, and a separator. The anode includes rounded zinc flakes coated on one surface with an absorbent gelling agent and disposed in the container. An electrolyte solution is added to the container so that at least some of the electrolyte is absorbed by the absorbent gelling agent. In addition, the zinc flakes, which may be disk-shaped, are oriented substantially perpendicular to side walls of the separator.Type: GrantFiled: September 30, 1999Date of Patent: December 25, 2001Assignee: Eveready Battery Company, Inc.Inventor: Lewis F. Urry
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Patent number: 5721065Abstract: This invention pertains to novel alkaline electrochemical cells having high drain capacities, especially cells having high drain rate capabilities at voltages of at least 1.1 volts for use in small appliances such as hearing aids. The anode includes anode material in the cells including potassium hydroxide, zinc powder, 0.02% to 0.5% indium as indium compound separate from the zinc powder, optionally a low level of mercury, and preferably a surfactant comprising hydroxyethylcellulose. The cathode provides sufficient oxidative capability to oxidize the zinc at a sufficient rate to support the electrical drain demands on the cell. A cathode, in a preferred zinc air cell for a hearing aid, includes at least 5 air ports, evenly distributed over the surface of the bottom of the cathode can. Cells of the invention exhibit prolonged operation at relatively constant voltage over 1.Type: GrantFiled: October 16, 1995Date of Patent: February 24, 1998Assignee: Rayovac CorporationInventors: Randall L. Collien, Patrick J. Spellman, Robert B. Dopp, John Edward Oltman, John David Burns, Joseph Lynn Passaniti, Michael Joseph Root
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Patent number: 5595836Abstract: A manganese dry battery includes an anode zinc can made of a zinc alloy containing 0.001-0.5 wt. % of titanium and at least one element selected from the group consisting of 0.001-0.05 wt. % of indium and 0.001-0.05 wt. % of bismuth, or a zinc alloy further containing 0.01-0.4 wt. % of lead. Even without heavy metals such as Hg and Cd, the zinc alloy anode can has a corrosion-resistant property and mechanical strength equivalent to or greater than those of the conventional zinc anode can, thereby giving a low pollution zinc-carbon battery having a storage characteristic equivalent or superior to that of the conventional zinc anode can.Type: GrantFiled: June 7, 1995Date of Patent: January 21, 1997Assignees: Matsushita Electric Industrial Co., Ltd., Mitsui Mining & Smelting Co., Ltd.Inventors: Eiji Tano, Shohei Nozaki, Ryohei Ashihara, Hajime Murakami, Kohei Kubota, Akira Kato, Koichi Sato
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Patent number: 5464709Abstract: Alkaline cells are substantially free of mercury, and employ a zinc anode gel, which gel has a which expansion of less than 25% after being discharged for 161 minutes to 15% depth of discharge at 2.88A.Type: GrantFiled: December 2, 1994Date of Patent: November 7, 1995Assignee: Eveready Battery Company, Inc.Inventors: Dale R. Getz, John C. Nardi, Robert F. Scarr
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Patent number: 5368958Abstract: Lithium based electrical cells having a new anode electrode construction are described. The cells have a sandwich construction of lithium sheet, conductive foil and lithium sheet, wherein the anode tab is welded directly onto the conductive foil not onto the lithium. Alternatively, the tab is connected onto the lithium in an area where the lithium does not dissolve during discharge, so that the tab will not become disconnected from the anode sheet.Type: GrantFiled: August 20, 1992Date of Patent: November 29, 1994Assignee: Advanced Energy Technologies IncorporatedInventors: Toshiro Hirai, Jun-ichi Yamaki
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Patent number: 5281497Abstract: Low mercury or mercury free primary or secondary alkaline manganese dioxide-zinc cell that comprises a manganese dioxide cathode with a manganese dioxide active material and a conductive powder. The active material and powder are uniformly mixed and pressed to form a porous cathode body. The cell further comprises a gelled zinc anode, a separator between the cathode and the anode, and an alkaline electrolyte. The anode gel comprises a modified starch as a gelling agent capable of releasing hydrogen gases developed during slow corrosion of zinc in the anode.A hydrogen recombination system can be used in the cell to limit inside pressure within permitted limits by recombining the evolved hydrogen.Type: GrantFiled: December 21, 1992Date of Patent: January 25, 1994Assignee: Battery Technologies Inc.Inventors: Karl Kordesch, Josef Daniel-Ivad, Robert Flack
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Patent number: 5164274Abstract: An alkaline manganese cell--which is generally a rechargeable cell, but which may also be a primary cell--is provided, having an anode composition where the anode comprises an admixture of amalgamated zinc particles, zinc oxide and metallic copper. The metallic copper is finely divided and has a large surface area, so that the copper is distributed throughout the anode and forms an electrically conductive, low resistance structure within the anode. The metallic matrix within the anode takes the appearance of a sponge, and provides for conductivity within the anode at all stages of charge and discharge of the cell. Especially in the anode of a secondary cell, the cell will exhibit an overcharge reserve because there is a sufficient amount of zinc oxide in the anode, and it will exhibit an over discharge reserve because of the presence of metallic copper in the anode.Type: GrantFiled: November 3, 1990Date of Patent: November 17, 1992Assignee: Battery Technologies Inc.Inventors: Karl V. Kordesch, Yatendra Sharma, Klaus Tomantschger
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Patent number: 4963447Abstract: An alkaline cell having a gelled zinc negative electrode solely or mainly using, as a gelling agent to hold a zinc powder in an alkaline electrolyte, a granular crosslinking type branched polyacrylic acid, polymethacrylic acid or salts thereof.This gelling agent, holding an alkaline electrolyte, swells and properly maintains the thickness of the electrolyte, whereby the electrolyte can be sufficiently fed to a cell reaction portion and the alkaline cell is imparted with excellent drop resistance and shelf stability.Type: GrantFiled: February 8, 1990Date of Patent: October 16, 1990Assignees: Matsushita Electric Industrial Co., Ltd., Nihon Junyaku Co., Ltd.Inventors: Joji Nishimura, Yuji Mototani, Junichi Asaoka, Noriyuki Yanagawa, Hiroshi Touma
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Patent number: 4920020Abstract: A zinc base powder for alkaline batteries consists of 0.05 to 3% of mercury, 0.003 to 0.2% of bismuth, 0.01 to 0.08% of lead, the rest being zinc. This powder has an excellent resistance to corrosion in alkaline medium.Type: GrantFiled: January 4, 1989Date of Patent: April 24, 1990Assignee: Metallurgie Hoboken-OverpeltInventors: Ivan A. Strauven, Marcel L. Meeus
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Patent number: 4861688Abstract: This invention uses as the anode active material a zinc alloy containing Ni, at least one element selected from In, Pb, Ga and Cd and, optionally further, one element selected from Al, Mg, Ca, Ba and Sr for the anode of a conventional zinc-alkaline battery which employs zinc as the anode active material, aqueous alkaline solution as the electrolyte, and manganese dioxide, silver oxide, oxygen and so forth as the cathode active material. The use of such zinc alloy permits the reduction of the amount of mercury to be used for amalgamation of the anode zinc surface which is made for the purpose of corrosion inhibition, thereby enabling the provision of a low-pollution zinc-alkaline battery.Type: GrantFiled: March 19, 1987Date of Patent: August 29, 1989Assignees: Matsushita Electric Indus. Co. Ltd., Mitsui Mining & Smelting Co., Ltd.Inventors: Akira Miura, Kanji Takata, Ryoji Okazaki, Toyohide Uemura, Keiichi Kagawa
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Patent number: 4857424Abstract: Alkaline zinc-manganese dioxide electrochemical cell containing a small amount of an organosiliconate additive as a means for reducing the amount of mercury used in the zinc amalgam. The organosiliconates added to the anode are film forming organic wetting agents and can be used in mercury containing anodic zinc gels containing other gas suppressors.Type: GrantFiled: October 11, 1988Date of Patent: August 15, 1989Assignee: Rayovac CorporationInventors: Duane M. Larsen, Robert B. Dopp
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Patent number: 4812374Abstract: An anode active material of zinc powder with indium coexisting therewith, the metals being amalgamated, an alkaline cell using the anode active material therein, and a method for the production of the anode active material or the alkaline cell.Type: GrantFiled: March 28, 1983Date of Patent: March 14, 1989Assignee: Mitsui Mining & Smelting Co., Ltd.Inventors: Keiichi Kagawa, Kiyoshi Taniyasu
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Patent number: 4777100Abstract: Corrosion is reduced in aqueous electrochemical cells having zinc anodes comprised of single crystal zinc particles by the addition of small amounts of a gas inhibiting surfactant, for example, an organic phosphate inhibitor such as RA600 from GAF Corp. to the cell. A synergistically lowered rate of corrosion and cell gassing is obtained even with reduction of mercury content.Type: GrantFiled: July 13, 1987Date of Patent: October 11, 1988Assignee: Duracell Inc.Inventors: Purush Chalilpoyil, Frank E. Parsen, Chih-Chung Wang
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Patent number: 4735876Abstract: This invention uses a zinc alloy containing In, one element of Al or Mg and, optionally, one or both of Pb and Cd for the anode of a zinc-alkaline battery which employs zinc as an active material of the anode (2), aqueous alkaline solution as an electrolyte, and manganese dioxide, silver oxide, oxygen and so forth as an active material of the cathode (5). The use of such zinc alloy permits the reduction of the amount to be used of mercury employed for amalgation of the anode zinc surface with the object of corrosion inhibition, thereby enabling the provision of a low pollution zinc-alkaline battery.Type: GrantFiled: November 26, 1986Date of Patent: April 5, 1988Assignees: Matsushita Electric Industrial Co., Ltd., Mitsui Mining & Smelting Co., Ltd.Inventors: Akira Miura, Ryoji Okazaki, Kanji Takata, Tsukasa Ohira
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Patent number: 4632699Abstract: Starting from a homogeneous molten bath composed of zinc, mercury and possibly other elements, an alloy powder with substantially homogeneous particles is prepared and that alloy powder is made to react with metallic mercury or with a mercury compound, thereby producing an alloy powder enriched with mercury.Type: GrantFiled: April 3, 1985Date of Patent: December 30, 1986Assignee: Metallurgie Hoboken-OverpeltInventors: Marcel L. Meeus, Yvan A. J. Strauven, Luc A. J. Groothaert
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Patent number: 4632890Abstract: Gassing is significantly reduced in electrochemical cells having anodes of polycrystalline metals, such as zinc, by heat treatment of the anode metal at a temperature below that of the melting point of the metal for a period of time sufficient to reduce the number of grains in the polycrystalline metal to at least a third of the original number of grains and thereafter using the metal in the formation of the cell anode. With such gassing reduction, the amount of mercury required for amalgamation with the zinc may also be reduced.Type: GrantFiled: June 28, 1985Date of Patent: December 30, 1986Assignee: Duracell Inc.Inventor: Chih-Chung Wang
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Patent number: 4608325Abstract: A blend of powders to be used in gelled anodes of electrochemical cells contains oil binders comprised of liquid petrolatum or halocarbon, particularly fluorocarbon, oils. Such binders maintain homogeneity of the powdered anode blends even under adverse storage and transporting conditions.Type: GrantFiled: October 6, 1983Date of Patent: August 26, 1986Assignee: Duracell Inc.Inventor: Mohamed I. Ismail
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Patent number: 4585716Abstract: Corrosion is reduced in aqueous electrochemical cells having zinc anodes by utilizing mercury amalgamated discrete single crystal zinc particles to which small amounts of one or more of indium, thallium, gallium, bismuth, cadmium, tin and lead have been added or prealloyed with the zinc, prior to formation of the single crystal particles. A synergistically lowered rate of corrosion and cell gassing is obtained even with reduction of mercury content.Type: GrantFiled: August 12, 1985Date of Patent: April 29, 1986Assignee: Duracell Inc.Inventors: Purush Chalilpoyil, Jesse R. Rea, Frank E. Parsen, Chih-Chung Wang
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Patent number: 4579791Abstract: A method for making single crystals of metal or other crystallizing materials whereby powders of irregular shaped single crystal particles (as small as 325 mesh or about 50 microns) may be readily and economically made. Said method comprises the steps of: (a) forming thin individual coatings on each of said particles such as oxides of metals on metal particles; (b) melting the particle material within said coatings which function as individual particle crucibles; (c) cooling the melted particles within the coatings to form individual single crystals each within its own coating; and (d) removing the coating such as by solvation with a solvent or by chemical reaction. The single crystal particles conform to the original shape of the particles which may be irregular. Such irregular shaped single crystals, such as of zinc, when used in electrochemical cell anodes enables the utilization of reduced amounts of mercury for amalgamation thereof without significant increase in cell gassing.Type: GrantFiled: October 1, 1984Date of Patent: April 1, 1986Assignee: Duracell Inc.Inventor: Chih-Chung Wang
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Patent number: 4500614Abstract: An alkaline cell is provided which comprises an anode prepared by amalgamating an alloy powder made of zinc and at least two metals selected from the group consisting of gallium, indium and thallium, wherein the amount of mercury is 0.05 to 1.8% by weight based on the weight of zinc. An alkaline cell is also provided which comprises an anode prepared by forming on the particles of a zinc powder an alloy layer made of mercury and at least two metals selected from the group consisting of gallium, indium and thallium, wherein the amount of mercury is 0.05 to 1.80% by weight based on the weight of the zinc powder.Type: GrantFiled: June 1, 1983Date of Patent: February 19, 1985Assignee: Toshiba Battery Co., Ltd.Inventors: Akio Nagamine, Akira Hayashi, Kazumasa Yoshida, Kojiro Miyasaka
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Patent number: 4460543Abstract: Zinc powder containing mercury for alkaline batteries are prepared by reacting zinc powder with metallic mercury in the presence of amalgamation aids with agitation in a closed system, at a partial oxygen pressure of less than 100 mbar, while the volatile parts are continually exhausted, then raising the partial value of atmosphere air. Additional alloying elements can be added to reduce the gas development, by mixing zinc powder with metallic mercury in which is dissolved a part or the entire quantity of the required alloying elements.Type: GrantFiled: April 6, 1983Date of Patent: July 17, 1984Assignee: Grillo-Werke AGInventor: Wolfgang Glaeser
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Patent number: 4376810Abstract: An electrochemical alkaline cell of the type comprising an anode, cathode and electrolyte for generating electrical energy and exhibiting an output discharge voltage comprises a consumable anode composed of zinc-indium-mercury alloy. The indium constituent is present in an amount of from more than 2% to 10% by weight and the mercury constituent is present in an amount 2% to 14% by weight with respect to the weight amount of the zinc constituent thereby obtaining a cell discharge voltage at one voltage level during substantially the whole useful life of the cell due to consumption of the zinc constituent followed by an abrupt lowering of the cell discharge voltage to a distinctly lower voltage level for the remainder of the cell useful life due to consumption of the indium and mercury constituents. The abrupt change of the cell discharge voltage to the lower level signifies that the cell is near exhaustion and should be replaced.Type: GrantFiled: September 15, 1980Date of Patent: March 15, 1983Assignee: Kabushiki Kaisha Daini SeikoshaInventors: Kazutoshi Takeda, Koichi Sugimoto
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Patent number: 4368244Abstract: An improved zinc electrode for use in rechargeable nickel-zinc electrochemical cells having greatly enhanced cycle life is disclosed, which comprises in admixture Zn, ZnO, HgO and an organic liquid binder produced via the reaction of diacetone acrylamide (DAA) and acrylic acid, which mixture has been formed into a paste and uniformly applied to a suitable current collector, wherein the ZnO component has an average surface area of about 9-10 m.sup.2 /gr and contains about 0.001 to 0.002 percent by weight Cd and about 0.001 to 0.002 percent by weight Pb.Type: GrantFiled: March 19, 1981Date of Patent: January 11, 1983Assignee: General Electric CompanyInventor: Ivan F. Danzig
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Patent number: 4281047Abstract: An improved zinc electrode for use in rechargeable nickel-zinc electrochemical cells having greatly enhanced cycle life is disclosed, which comprises in admixture Zn, ZnO, HgO and an organic liquid binder produced via the reaction of diacetone acrylamide (DAA) and acrylic acid, which mixture has beem formed into a paste and uniformly applied to a suitable current collector, wherein the ZnO component has an average surface area of about 3.5-4.0 m.sup.2 /gr and contains about 0.08 to 0.11 percent by weight Cd and about 0.05 to 0.08 percent by weight Pb, and has a generally rod-like particle structure.Type: GrantFiled: June 11, 1980Date of Patent: July 28, 1981Assignee: General Electric CompanyInventor: Ivan F. Danzig
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Patent number: 4242424Abstract: The method of making a thin flat laminar battery comprising the steps of coating a substrate with a dispersion of zinc powder and water to produce an anode slurry, and thereafter diffusing electrolytes into said anode slurry; and electrical cells and batteries made by this process.Type: GrantFiled: April 7, 1978Date of Patent: December 30, 1980Assignee: Polaroid CorporationInventors: Sheldon A. Buckler, Fredric S. Cohen, David P. Kennedy
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Patent number: 4192914Abstract: This invention relates to an alkaline primary battery of the type having a negative electrode containing cadmium of amalgamated zinc and a positive electrode containing monovalent silver oxide, mercuric oxide, or mixtures of these oxides with manganese dioxide, the positive electrode having an electrochemically active surface area facing the negative electrode. At positive electrodes, self-discharge can be caused by the solubility of the active material. It is an object of this invention to provide an improved alkaline primary battery designed to reduce this type of self-discharge, without impairing the internal resistance of the battery.Type: GrantFiled: October 25, 1978Date of Patent: March 11, 1980Assignee: Leclanche S.A.Inventor: Paul Ruetschi
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Patent number: 4144382Abstract: The active cathode material of an alkaline cell is a mixture of monovalent silver oxide and graphite or a compound of which the main ingredient is divalent silver oxide. The active anode material is powdered mercury-indium-zinc alloy mixed with a suitable binder and pressed into formed or gelled state. After almost all of the zinc of the anode material is exhausted during the course of discharge of the cell, a small quantity of indium acts as the anode active material so as to continue to supply current for a period of time but at lower voltage. By detecting the voltage drop, it can be determined that the cell is approaching the end of its useful life.Type: GrantFiled: December 20, 1976Date of Patent: March 13, 1979Assignee: Kabushiki Kaisha Daini SeikoshaInventors: Kazutoshi Takeda, Iwao Kishi
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Patent number: 4136236Abstract: This invention relates to an alkaline primary battery of the type having a negative electrode containing cadmium or amalgamated zinc and a positive electrode containing monovalent silver oxide, mercuric oxide, or mixtures of these oxides with manganese dioxide, the positive electrode having an electrochemically active surface area facing the negative electrode. At positive electrodes, self-discharge can be caused by the solubility of the active material. It is an object of this invention to provide an improved alkaline primary battery designed to reduce this type of self-discharge, without impairing the internal resistance of the battery.Type: GrantFiled: April 27, 1977Date of Patent: January 23, 1979Assignee: Leclanche S.A.Inventor: Paul Ruetschi
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Patent number: 4104188Abstract: A process for the production of a zinc powder for electrochemical batteries which require the presence of mercury, in which at least part of the mercury required in the battery is introduced into molten zinc and the molten alloy is homogenized and transformed into powder by pulverization (atomization).Type: GrantFiled: July 27, 1976Date of Patent: August 1, 1978Assignee: Metallurgie Hoboken-OverpeltInventor: Robert Nicaise
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Patent number: 4091178Abstract: The rechargeable cell comprises a cathode formed from a compressed mixture of manganese dioxide particles, electrically conductive particles and a binder; an anode separated from the cathode and containing amalgamated metallic zinc particles on an electrically conductive carrier in an amount sufficient to provide a limited anode discharge capacity of about one-third of the cathode capacity; an aqueous alkaline electrolyte; and a charge reserve mass comprising an oxide or hydroxide of zinc in an amount sufficient to provide a charge reserve capacity for said cell equal to at least 50 percent of the anode discharge capacity.Type: GrantFiled: September 1, 1977Date of Patent: May 23, 1978Assignee: Union Carbide CorporationInventor: Karl Victor Kordesch
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Patent number: 4056664Abstract: The voltage level of an electrochemical cell having a divalent silver oxide (AgO) cathode is reduced to and maintained at the monovalent silver oxide (Ag.sub.2 O) level by an attenuated divalent silver oxide layer between the divalent silver oxide cathode and the cathode current collector.Type: GrantFiled: January 28, 1977Date of Patent: November 1, 1977Assignee: P. R. Mallory & Co. Inc.Inventor: Sol Samson Jaffe
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Patent number: 4007054Abstract: A zinc wire coil is wound as a helix on a conducting support such as a copper or brass wire or rod, and the unit amalgamated in a mercuric salt solution to form a rigid anode element; in a cell such anode maintains substantially uniform spacing between anode and cathode to maintain substantially uniform current flow distribution.Using a multi-strand cable, or multiple layers of zinc wires for the helix permits predetermined percentage ratio of porosity to volume of anode.Type: GrantFiled: January 21, 1976Date of Patent: February 8, 1977Assignee: P. R. Mallory & Co., Inc.Inventors: Nikola Marincic, Ronald Merz, Robert H. Kelsey