With Mercury Patents (Class 429/230)
  • Patent number: 10900617
    Abstract: 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: Grant
    Filed: August 31, 2020
    Date of Patent: January 26, 2021
    Assignee: XIAMEN ECO LIGHTING CO. LTD.
    Inventors: Qiyuan Wang, Yunnan Lin, Liping Lin
  • Patent number: 10794546
    Abstract: 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: Grant
    Filed: April 14, 2020
    Date of Patent: October 6, 2020
    Assignee: XIAMEN ECO LIGHTING CO. LTD.
    Inventors: Qiyuan Wang, Yunnan Lin, Liping Lin
  • Patent number: 10797437
    Abstract: 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: Grant
    Filed: November 14, 2019
    Date of Patent: October 6, 2020
    Assignee: Wintergreen Corp.
    Inventors: William Hale, Frank Skinner
  • Patent number: 10655796
    Abstract: 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: Grant
    Filed: October 31, 2019
    Date of Patent: May 19, 2020
    Assignee: XIAMEN ECO LIGHTING CO. LTD.
    Inventors: Qiyuan Wang, Yunnan Lin, Liping Lin
  • Patent number: 10495265
    Abstract: 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: Grant
    Filed: June 18, 2019
    Date of Patent: December 3, 2019
    Assignee: XIAMEN ECO LIGHTING CO. LTD.
    Inventors: Qiyuan Wang, Yunnan Lin, Liping Lin
  • Patent number: 10100983
    Abstract: 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: Grant
    Filed: April 3, 2018
    Date of Patent: October 16, 2018
    Assignee: XIAMEN ECO LIGHTING CO. LTD.
    Inventors: Qiyuan Wang, Yunnan Lin, Liping Lin
  • Patent number: 9841148
    Abstract: 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: Grant
    Filed: June 26, 2017
    Date of Patent: December 12, 2017
    Assignee: XIAMEN ECO LIGHTING CO. LTD.
    Inventors: Qiyuan Wang, Yunnan Lin, Liping Lin
  • Patent number: 9719638
    Abstract: 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: Grant
    Filed: February 14, 2017
    Date of Patent: August 1, 2017
    Assignee: XIAMEN ECO LIGHTING CO. LTD.
    Inventors: Qiyuan Wang, Yunnan Lin, Liping Lin
  • Patent number: 9605811
    Abstract: 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: Grant
    Filed: January 24, 2015
    Date of Patent: March 28, 2017
    Assignee: XIAMEN ECO LIGHTING CO. LTD.
    Inventors: Qiyuan Wang, Yunnan Lin, Liping Lin
  • Publication number: 20140106241
    Abstract: 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: Application
    Filed: October 15, 2013
    Publication date: April 17, 2014
    Applicant: VARTA Microbattery GmbH
    Inventors: Cornelia Csrenko, Ulrich Kohls, Bernd Kreidler, Hermann Löffelmann, Andreas Rupp
  • Patent number: 8389150
    Abstract: 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: Grant
    Filed: April 20, 2012
    Date of Patent: March 5, 2013
    Inventor: Klaus Tomantschger
  • Patent number: 8182938
    Abstract: 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: Grant
    Filed: May 3, 2011
    Date of Patent: May 22, 2012
    Inventor: Klaus Tomantschger
  • Patent number: 7976976
    Abstract: 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: Grant
    Filed: February 1, 2008
    Date of Patent: July 12, 2011
    Assignee: Rosecreek Technologies Inc.
    Inventor: Klaus Tomantschger
  • Patent number: 7524582
    Abstract: 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: Grant
    Filed: June 5, 2006
    Date of Patent: April 28, 2009
    Assignee: Grillo-Werke AG
    Inventors: Armin Melzer, Petra Merkel, Jochen Spiestersbach, Rudi Kube, Norbert Schulz
  • Publication number: 20090081547
    Abstract: 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: Application
    Filed: June 26, 2006
    Publication date: March 26, 2009
    Inventor: Kensuke Nakura
  • Patent number: 7025612
    Abstract: 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: Grant
    Filed: March 18, 2005
    Date of Patent: April 11, 2006
    Assignee: LSI Industries, Inc.
    Inventors: Michael J. Keilholz, Mark C. Reed, Robert E. Kaeser
  • Patent number: 6333127
    Abstract: 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: Grant
    Filed: September 30, 1999
    Date of Patent: December 25, 2001
    Assignee: Eveready Battery Company, Inc.
    Inventor: Lewis F. Urry
  • Patent number: 5721065
    Abstract: 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: Grant
    Filed: October 16, 1995
    Date of Patent: February 24, 1998
    Assignee: Rayovac Corporation
    Inventors: Randall L. Collien, Patrick J. Spellman, Robert B. Dopp, John Edward Oltman, John David Burns, Joseph Lynn Passaniti, Michael Joseph Root
  • Patent number: 5595836
    Abstract: 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: Grant
    Filed: June 7, 1995
    Date of Patent: January 21, 1997
    Assignees: 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
  • Patent number: 5464709
    Abstract: 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: Grant
    Filed: December 2, 1994
    Date of Patent: November 7, 1995
    Assignee: Eveready Battery Company, Inc.
    Inventors: Dale R. Getz, John C. Nardi, Robert F. Scarr
  • Patent number: 5368958
    Abstract: 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: Grant
    Filed: August 20, 1992
    Date of Patent: November 29, 1994
    Assignee: Advanced Energy Technologies Incorporated
    Inventors: Toshiro Hirai, Jun-ichi Yamaki
  • Patent number: 5281497
    Abstract: 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: Grant
    Filed: December 21, 1992
    Date of Patent: January 25, 1994
    Assignee: Battery Technologies Inc.
    Inventors: Karl Kordesch, Josef Daniel-Ivad, Robert Flack
  • Patent number: 5164274
    Abstract: 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: Grant
    Filed: November 3, 1990
    Date of Patent: November 17, 1992
    Assignee: Battery Technologies Inc.
    Inventors: Karl V. Kordesch, Yatendra Sharma, Klaus Tomantschger
  • Patent number: 4963447
    Abstract: 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: Grant
    Filed: February 8, 1990
    Date of Patent: October 16, 1990
    Assignees: Matsushita Electric Industrial Co., Ltd., Nihon Junyaku Co., Ltd.
    Inventors: Joji Nishimura, Yuji Mototani, Junichi Asaoka, Noriyuki Yanagawa, Hiroshi Touma
  • Patent number: 4920020
    Abstract: 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: Grant
    Filed: January 4, 1989
    Date of Patent: April 24, 1990
    Assignee: Metallurgie Hoboken-Overpelt
    Inventors: Ivan A. Strauven, Marcel L. Meeus
  • Patent number: 4861688
    Abstract: 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: Grant
    Filed: March 19, 1987
    Date of Patent: August 29, 1989
    Assignees: Matsushita Electric Indus. Co. Ltd., Mitsui Mining & Smelting Co., Ltd.
    Inventors: Akira Miura, Kanji Takata, Ryoji Okazaki, Toyohide Uemura, Keiichi Kagawa
  • Patent number: 4857424
    Abstract: 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: Grant
    Filed: October 11, 1988
    Date of Patent: August 15, 1989
    Assignee: Rayovac Corporation
    Inventors: Duane M. Larsen, Robert B. Dopp
  • Patent number: 4812374
    Abstract: 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: Grant
    Filed: March 28, 1983
    Date of Patent: March 14, 1989
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Keiichi Kagawa, Kiyoshi Taniyasu
  • Patent number: 4777100
    Abstract: 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: Grant
    Filed: July 13, 1987
    Date of Patent: October 11, 1988
    Assignee: Duracell Inc.
    Inventors: Purush Chalilpoyil, Frank E. Parsen, Chih-Chung Wang
  • Patent number: 4735876
    Abstract: 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: Grant
    Filed: November 26, 1986
    Date of Patent: April 5, 1988
    Assignees: Matsushita Electric Industrial Co., Ltd., Mitsui Mining & Smelting Co., Ltd.
    Inventors: Akira Miura, Ryoji Okazaki, Kanji Takata, Tsukasa Ohira
  • Patent number: 4632890
    Abstract: 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: Grant
    Filed: June 28, 1985
    Date of Patent: December 30, 1986
    Assignee: Duracell Inc.
    Inventor: Chih-Chung Wang
  • Patent number: 4632699
    Abstract: 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: Grant
    Filed: April 3, 1985
    Date of Patent: December 30, 1986
    Assignee: Metallurgie Hoboken-Overpelt
    Inventors: Marcel L. Meeus, Yvan A. J. Strauven, Luc A. J. Groothaert
  • Patent number: 4608325
    Abstract: 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: Grant
    Filed: October 6, 1983
    Date of Patent: August 26, 1986
    Assignee: Duracell Inc.
    Inventor: Mohamed I. Ismail
  • Patent number: 4585716
    Abstract: 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: Grant
    Filed: August 12, 1985
    Date of Patent: April 29, 1986
    Assignee: Duracell Inc.
    Inventors: Purush Chalilpoyil, Jesse R. Rea, Frank E. Parsen, Chih-Chung Wang
  • Patent number: 4579791
    Abstract: 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: Grant
    Filed: October 1, 1984
    Date of Patent: April 1, 1986
    Assignee: Duracell Inc.
    Inventor: Chih-Chung Wang
  • Patent number: 4500614
    Abstract: 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: Grant
    Filed: June 1, 1983
    Date of Patent: February 19, 1985
    Assignee: Toshiba Battery Co., Ltd.
    Inventors: Akio Nagamine, Akira Hayashi, Kazumasa Yoshida, Kojiro Miyasaka
  • Patent number: 4460543
    Abstract: 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: Grant
    Filed: April 6, 1983
    Date of Patent: July 17, 1984
    Assignee: Grillo-Werke AG
    Inventor: Wolfgang Glaeser
  • Patent number: 4376810
    Abstract: 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: Grant
    Filed: September 15, 1980
    Date of Patent: March 15, 1983
    Assignee: Kabushiki Kaisha Daini Seikosha
    Inventors: Kazutoshi Takeda, Koichi Sugimoto
  • Patent number: 4368244
    Abstract: 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: Grant
    Filed: March 19, 1981
    Date of Patent: January 11, 1983
    Assignee: General Electric Company
    Inventor: Ivan F. Danzig
  • Patent number: 4281047
    Abstract: 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: Grant
    Filed: June 11, 1980
    Date of Patent: July 28, 1981
    Assignee: General Electric Company
    Inventor: Ivan F. Danzig
  • Patent number: 4242424
    Abstract: 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: Grant
    Filed: April 7, 1978
    Date of Patent: December 30, 1980
    Assignee: Polaroid Corporation
    Inventors: Sheldon A. Buckler, Fredric S. Cohen, David P. Kennedy
  • Patent number: 4192914
    Abstract: 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: Grant
    Filed: October 25, 1978
    Date of Patent: March 11, 1980
    Assignee: Leclanche S.A.
    Inventor: Paul Ruetschi
  • Patent number: 4144382
    Abstract: 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: Grant
    Filed: December 20, 1976
    Date of Patent: March 13, 1979
    Assignee: Kabushiki Kaisha Daini Seikosha
    Inventors: Kazutoshi Takeda, Iwao Kishi
  • Patent number: 4136236
    Abstract: 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: Grant
    Filed: April 27, 1977
    Date of Patent: January 23, 1979
    Assignee: Leclanche S.A.
    Inventor: Paul Ruetschi
  • Patent number: 4104188
    Abstract: 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: Grant
    Filed: July 27, 1976
    Date of Patent: August 1, 1978
    Assignee: Metallurgie Hoboken-Overpelt
    Inventor: Robert Nicaise
  • Patent number: 4091178
    Abstract: 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: Grant
    Filed: September 1, 1977
    Date of Patent: May 23, 1978
    Assignee: Union Carbide Corporation
    Inventor: Karl Victor Kordesch
  • Patent number: 4056664
    Abstract: 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: Grant
    Filed: January 28, 1977
    Date of Patent: November 1, 1977
    Assignee: P. R. Mallory & Co. Inc.
    Inventor: Sol Samson Jaffe
  • Patent number: 4007054
    Abstract: 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: Grant
    Filed: January 21, 1976
    Date of Patent: February 8, 1977
    Assignee: P. R. Mallory & Co., Inc.
    Inventors: Nikola Marincic, Ronald Merz, Robert H. Kelsey