Patents Represented by Attorney Israel Nissenbaum

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  • Method for improving stability of Li/MnO.sub.2 cells
    Patent number: 4328288
    Abstract: A method for improving the stability of Li/MnO.sub.2 cells having organic electrolytes subject to gaseous decomposition and a manganese dioxide cathode having absorbed water therein in excess of crystalline bound water, with said manganese dioxide and absorbed water causing said gaseous decomposition. Said method comprises the step of predischarging said cell up to 5% of cell capacity prior to extended storage.
    Type: Grant
    Filed: July 25, 1980
    Date of Patent: May 4, 1982
    Assignee: Duracell International Inc.
    Inventor: Alwyn H. Taylor
  • High temperature organic electrolyte cells
    Patent number: 4326014
    Abstract: An anode coating for anhydrous electrochemical generating cells is disclosed wherein the anode active material is immersed in an electrolyte solution and coated with the insoluble reaction product of the anode metal with an inhibiting reactant such as CO.sub.2, SO.sub.2, O.sub.2, NH.sub.3, and N.sub.2 saturated with respect to water vapor. This coating is insoluble in the cell under open circuit conditions and is stable with regard to said electrolyte but is removable in said electrolyte, when the cell is discharged with a negligible over voltage. The coated anodes and the method for making same are specifically described. Cells with anodes treated according to this invention have been stored at 55.degree. C., for extended periods with negligible self discharge.
    Type: Grant
    Filed: April 17, 1978
    Date of Patent: April 20, 1982
    Assignee: Duracell International Inc.
    Inventor: Arabinda N. Dey
  • One piece battery holder
    Patent number: 4325106
    Abstract: A battery holder comprising a drawer having a plurality of compartments, each sized to accommodate a single battery, each compartment being polarized so that a battery can be placed therein only in a predetermined position, means for electrically interconnecting the batteries, and means for connecting a user circuit to the battery holder. The battery holder can further comprise means for retaining the battery within the compartment and a circuit switch to protect the user circuit from circuit runaway.
    Type: Grant
    Filed: September 10, 1979
    Date of Patent: April 13, 1982
    Assignee: Duracell International Inc.
    Inventors: William Bartunek, Gordon E. Kaye, Henry R. Mallory
  • Non-aqueous cell safety
    Patent number: 4321314
    Abstract: The safety of a cell such as a Li/MnO.sub.2 cell is improved by complexing the volatile electrolyte solvent normally used therein with the electrolyte salt whereby efficient solvation of the salt is obtained without detrimental free volatile solvent.
    Type: Grant
    Filed: September 2, 1980
    Date of Patent: March 23, 1982
    Assignee: Duracell International Inc.
    Inventors: William L. Bowden, Peter R. Moses
  • Synchronous arrangement and method for heat treating workpieces
    Patent number: 4319122
    Abstract: A method and arrangement for spot welding the anode structure of a succession of alkaline primary batteries with a focused beam of radiation generated by a stationary laser as the batteries are conveyed through the arrangement. The batteries are conducted along a circular work station in the form of a star wheel having the batteries arranged around a portion of its circumference. An optical focusing system is mounted for oscillation about the rotational axis of the star wheel in synchronous motion with each battery as it passes through the beam of radiation. The anode structure of each battery is positioned at the focal point of the optical focusing system whereby the optical focusing system focuses the radiation beam on one small area of the anode structure to produce a spot weld on the anode structure.
    Type: Grant
    Filed: August 7, 1980
    Date of Patent: March 9, 1982
    Assignee: Duracell International Inc.
    Inventors: Peter J. Pope, Richard B. Willis-Owen
  • Rechargeable nonaqueous silver alloy anode cell
    Patent number: 4316777
    Abstract: A secondary electrochemical cell comprising a solid anode, an electrolyte and a cathode. The anode is a solid solution of silver and a metal which is an alkaline or alkali earth metal. The metal is capable of forming a solid solution with the anode on the recharging of the anode. Alternatively, the cell is formed in the discharged state with a solid porous silver anode, a cathode, a nonaqueous liquid electrolyte containing the alkaline or alkaline earth metal salts therein. The alloyed anode improves the rechargeability of the cell.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: February 23, 1982
    Assignee: Duracell International Inc.
    Inventor: Arabinda N. Dey
  • Method for the manufacture of a polystyrene separator and cell
    Patent number: 4315062
    Abstract: A method of forming a polystyrene separator for use in an electrochemical cell comprising the steps of dissolving the polystyrene resin in a solvent, placing a predetermined amount of the resulting polystyrene solution directly on the surface of a cathode, and removing the solvent thereby leaving a substantially continuous coating on the surface of the cathode.
    Type: Grant
    Filed: January 16, 1978
    Date of Patent: February 9, 1982
    Assignee: Duracell International Inc.
    Inventor: Donald M. Clarizio
  • Treatment of titanium disulfide for battery applications
    Patent number: 4307157
    Abstract: Commercially available titanium disulfide is treated with an oxidizing agent such as iodine (I.sub.2) prior to use as a cathode material in an electrochemical cell with the treated titanium disulfide providing superior discharge characteristics.
    Type: Grant
    Filed: April 7, 1980
    Date of Patent: December 22, 1981
    Assignee: Duracell International Inc.
    Inventors: Ashok V. Joshi, Charles C. Liang
  • Solid state cell
    Patent number: 4299890
    Abstract: A solid state ambient temperature cell having a thin layer of an alkali or alkaline earth metal as anode, a thin layer of a solid ionic conductive electrolyte and a thin cathode layer of a metal or metalloid which can accommodate anode cations in the crystalline structure thereof. Such metals or metalloids include bismuth, arsenic, antimony, lead, tin, selenium or tellurium. The cell is dischargeable at high rates and is rechargeable.
    Type: Grant
    Filed: June 18, 1980
    Date of Patent: November 10, 1981
    Assignee: Duracell International Inc.
    Inventors: Jesse R. Rea, Allen Davis
  • Fuse receptacle
    Patent number: 4299435
    Abstract: A receptacle for replaceably holding a replaceable fuse in an electrical circuit includes a forwardly inwardly tapered tubular member closed at its front end by a contact-defining metal cap and provided at its rear end with an internally threaded enlarged section, a contact-defining metal collar telescoping the rear of the tapered tube forward of the enlarged section and having a terminal tab projecting outwardly through an opening in the enlarged section. An externally threaded closure plug separably engages the tubular member threaded section and has in its front face a well whose axis is transversely offset from the plug axis and whose peripheral face is rearwardly inwardly tapered. A transversely crescent shaped wedge member projects forwardly from the well border and is integrally formed with the plug and has a tapered inside face coplanar with the well peripheral face.
    Type: Grant
    Filed: December 31, 1979
    Date of Patent: November 10, 1981
    Assignee: Duracell International Inc.
    Inventor: Gordon E. Kaye
  • Predischarged nonaqueous cell
    Patent number: 4298663
    Abstract: An electrochemical cell containing a decomposing electrolyte solvent, further contains small amounts of an additive material such as lithium sulfide which causes partial self discharge of the cathode of the cell with non-reactive products. The self discharge partially deactivates substantially all of the active cathode surface as a reaction site thereby reducing the decomposition of the electrolyte solvent.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: November 3, 1981
    Assignee: Duracell International Inc.
    Inventor: Peter R. Moses
  • Method of treating silver oxide powder and the product formed therefrom
    Patent number: 4298506
    Abstract: A silver oxide powder for use in the cathode of an alkaline silver oxide galvanic cell, being a mixture of at least 10% divalent silver oxide powder together with monovalent silver oxide powder, is produced by at least partially reducing the silver oxide powder mixture by reacting it with a surfactant, particularly an anionic surfactant and thereafter removing the reactant. The silver oxide powder displays a lower oxygen evolution rate when immersed in an alkaline electrolyte, and lower internal friction during powder flow under pressure when compared with a similar silver oxide mixture which is known not to have been so reacted.
    Type: Grant
    Filed: November 3, 1978
    Date of Patent: November 3, 1981
    Assignee: Duracell International Inc.
    Inventors: Franciszek J. Przybyla, Eleanor J. Rossler
  • Method of treating silver oxide powder and the product formed therefrom
    Patent number: 4297249
    Abstract: A silver oxide powder for use in the cathode of an alkaline silver oxide galvanic cell, being a mixture of at least 10% divalent silver oxide powder together with monovalent silver oxide powder, is produced by at least partially reducing the silver oxide powder mixture by reacting it with a fatty acid or a fatty acid salt and thereafter removing the reactant. The silver oxide powder displays a lower oxygen evolution rate when immersed in an alkaline electrolyte, and lower internal friction during powder flow under pressure when compared with a similar silver oxide mixture which is known not to have been so reacted.
    Type: Grant
    Filed: November 3, 1978
    Date of Patent: October 27, 1981
    Assignee: Duracell International Inc.
    Inventors: Franciszek J. Przybyla, Eleanor J. Rossler
  • One piece connector
    Patent number: 4295705
    Abstract: A one piece connector, as for a battery, comprising a connecting means having an integral bottom wall with a boss extending from the bottom wall, the boss being formed of continuous material. A connector assembly in which the said one piece connector is attached to a supporting means.
    Type: Grant
    Filed: March 26, 1979
    Date of Patent: October 20, 1981
    Assignee: Duracell International Inc.
    Inventor: Frank L. Ciliberti, Jr.
  • Battery package with DC to DC converter
    Patent number: 4296461
    Abstract: A battery package having a casing which contains at least one electrochemical cell electrically connected to a DC to DC converter. A pair of electrical connections are located on the casing to electrically connect the battery package to a load. The converter conducts and the cell discharges only when a load is present across the electrical connection.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: October 20, 1981
    Assignee: Duracell International Inc.
    Inventors: Henry R. Mallory, Steven J. Nichols
  • Bilevel rechargeable cell
    Patent number: 4292383
    Abstract: A cell having an anode, a cathode, barrier means between the cathode and anode, and an electrolyte in contact with all the elements of the cell, the cathode being formed from a mixture of monovalent silver oxide and nickel. The cathode can also be formed from a mixture of monovalent silver oxide, a material such as mercuric oxide, and silver, nickel or a mixture of silver and nickel.
    Type: Grant
    Filed: November 21, 1979
    Date of Patent: September 29, 1981
    Assignee: Duracell International Inc.
    Inventors: Ralph Di Palma, Arthur Phillips
  • Method of forming in situ gelled anode
    Patent number: 4288913
    Abstract: A method for forming a gelled anode in which a powdered anode metal is mixed with means for maintaining a uniform mixture of the powdered metal and a gelling agent, the gelling agent is added, and the mixture is fed into an aqueous electrolyte in the cell whereupon a gel is formed in situ.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: September 15, 1981
    Assignee: Duracell International Inc.
    Inventors: Frank E. Parsen, Teresita O. Graham
  • Electric mouth organ holder
    Patent number: 4287803
    Abstract: An electric mouth organ holder containing a microphone therewithin and comprising an outer shell upon which are supported radially outwardly projecting harmonicas and a central core section rotatable with respect to said outer shell. The harmonicas are rotatably juxtaposed adjacent to said central core section as desired with individual harmonicas of different keys or types being thereby operatively associated with said microphone.
    Type: Grant
    Filed: June 28, 1979
    Date of Patent: September 8, 1981
    Inventor: Fred Zema
  • Fluorescent lantern
    Patent number: D263257
    Type: Grant
    Filed: May 3, 1979
    Date of Patent: March 2, 1982
    Assignee: Duracell International Inc.
    Inventor: Ernest F. Thomson
  • Electric battery
    Patent number: D263581
    Type: Grant
    Filed: January 24, 1977
    Date of Patent: March 30, 1982
    Assignee: Duracell International Inc.
    Inventor: Gordon E. Kaye