Patents Examined by Gerard P. Rooney, Jr.
  • Patent number: 4599283
    Abstract: A power cell assembly (10) for operating equipment such as video equipment (12) including a plurality of power cells (14). The power cells (14) are connected in series to operate video equipment (12). A housing supports the power cells (14) and includes nonconductive partitioning walls (36) within the housing (35) for insulating and separating the adjacent ones of the power cells (14) from each other. A method is provided for making the power cell assembly (10) including the steps of disposing the plurality of power cells (14) between the partitioning walls (36) of the base member (42) and adjacent the floor portion (44) thereof, electrically connecting the power cells (14) in series within the base member (42) and enclosing the connected power cells (14) to provide external insulation between the connected power cells (14) and the external environment.
    Type: Grant
    Filed: August 12, 1983
    Date of Patent: July 8, 1986
    Assignee: Enertronics, Inc.
    Inventors: Karl O. Thiele, Steven L. Toth
  • Patent number: 4507372
    Abstract: The power characteristics of a lead acid battery are improved by incorporating a dispersion of 1 to 10% by weight of a thermodynamically stable conductivity additive, such as conductive tin oxide coated glass fibers (34) of filamentary glass wool (42) in the positive active layer (32) carried on the grid (30) of the positive plate (16). Positive plate potential must be kept high enough to prevent reduction of the tin oxide to tin by utilizing an oversized, precharged positive paste.
    Type: Grant
    Filed: April 25, 1983
    Date of Patent: March 26, 1985
    Assignee: California Institute of Technology
    Inventor: John R. Rowlette
  • Patent number: 4490446
    Abstract: A method of preventing overpressurization of a lithium-thionyl chloride battery cell by formation of excessive SO.sub.2 during high rate discharge. The method comprises the step of providing PCl.sub.5 in the cathode. Alternatively, the PCl.sub.5 may be provided in the electrolyte or in both the cathode and electrolyte as desired. The PCl.sub.5 may be incorporated in the cathode by introduction thereof into the porous carbon structure of a preformed carbon element. Alternatively, the PCl.sub.5 may be dry mixed with the carbon and the mixture formed into the desired cathode element.
    Type: Grant
    Filed: December 17, 1982
    Date of Patent: December 25, 1984
    Assignee: Gould Inc.
    Inventors: Glynn R. Ramsay, Dennis J. Salmon
  • Patent number: 4483752
    Abstract: A low current density, fused salt electrolyte method for depositing passivating metals upon graphite. The passivating metals are applied at 50-100 milliamperes per cm.sup.2 for 2-10 minutes followed by further deposition at 5-25 milliamperes per cm.sup.2 in an inert fused salt electrolyte bath.
    Type: Grant
    Filed: September 28, 1982
    Date of Patent: November 20, 1984
    Assignee: Eltech Systems Corporation
    Inventor: George A. Kline
  • Patent number: 4482617
    Abstract: A novel, improved battery separator and process for making the separator. Essentially, the separator carries a plurality of polymeric ribs bonded to at least one surface and the ribs have alternating elevated segments of uniform maxiumum heights and depressed segments along the length of the ribs.
    Type: Grant
    Filed: December 10, 1982
    Date of Patent: November 13, 1984
    Assignee: USM Corporation
    Inventors: Rene Le Bayon, Roger Faucon, Jacqueline Legrix
  • Patent number: 4474862
    Abstract: The iron electrodes of a battery are recharged by removing them from the battery, heating them in a reducing gas atmosphere at over about C., for a sufficient time to convert discharged iron compounds to charged iron compounds, and then cooling the charged electrodes.
    Type: Grant
    Filed: November 10, 1983
    Date of Patent: October 2, 1984
    Assignee: Westinghouse Electric Corp.
    Inventors: Edward S. Buzzelli, Jack T. Brown
  • Patent number: 4473448
    Abstract: Trivalent chromium is electrodeposited from an aqueous bath in which are dissolved very small proportions of compounds of classes (I) compounds containing ##STR1## group, preferably a thiocyanate or a compound of formula X--CSNR where X is R, S or, NR.sub.2 or is --CSNR.sub.2 joined by --S-- or --S--S-- and R is H, alkyl, alkenyl, alkynyl or aromatic: (II) compounds of formula (X)--SO.sub.2 --(Y) in which X is (a) a saturated or unsaturated two or three carbon atom alpiphatic group terminating in a mercapto group or (b) the disulphide corresponding thereto, of formula Y--(SO.sub.2)--X--S--S--X(SO.sub.2)--Y or (c) single unsubstituted benzene ring; and Y is --ONa, --OH, --NH.sub.2 or when X is a single unsubstituted benzene ring, a direct --NH-- linkage or indirect --NH--CO-linkage to the ortho position thereof, (III) compounds of formula HOOC --(CH.sub.2).sub.n --S.sub.m (CH.sub.2)COOH where n or m is 1 or 2; (IV) o-mercaptobenzoic acid and (V) sodium salts of sulphur, selenium and tellurium.
    Type: Grant
    Filed: February 3, 1982
    Date of Patent: September 25, 1984
    Assignee: W. Canning Materials Limited
    Inventor: Neil Deeman
  • Patent number: 4472489
    Abstract: Conjugated backbone polymer electrodes such as polyacetylene anodes are coated with the reaction product of the reduced polymer with a sultone or sulfonate. Such coating may have occurred by using a sultone such as propane sultone in the electrolyte of a battery with such an anode, or in electrode preparation. The coating improves the stability of the electrode, especially when the polymer is highly reduced during battery use, whether the sultone remains as all or part of the electrolyte, or the sultone is replaced by a solvent such as propylene carbonate in the electrolyte for the battery containing coated electrode.
    Type: Grant
    Filed: November 30, 1983
    Date of Patent: September 18, 1984
    Assignee: Allied Corporation
    Inventors: MacRae Maxfield, Lawrence W. Shacklette, James F. Wolf, Suzanne M. Savner
  • Patent number: 4465744
    Abstract: An ionically conducting glass for use as a solid electrolyte in a power or secondary cell containing an alkali metal-containing anode and a cathode separated by an alkali metal ion conducting glass having an ionic transference number of unity and the general formula: A.sub.1+x D.sub.2-x/3 Si.sub.x P.sub.3-x O.sub.12-2x/3, wherein A is a network modifier for the glass and is an alkali metal of the anode, D is an intermediate for the glass and is selected from the class consisting of Zr, Ti, Ge, Al, Sb, Be, and Zn and X is in the range of from 2.25 to 3.0. Of the alkali metals, Na and Li are preferred and of the intermediate, Zr, Ti and Ge are preferred.
    Type: Grant
    Filed: November 30, 1982
    Date of Patent: August 14, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Sherman Susman, Kenneth J. Volin
  • Patent number: 4452869
    Abstract: An improved battery of the type having a spiral wound core (32) surrounded by a container (38) is disclosed in which an improved terminal tab (10-32, 44-50) is attached to the end of the core inserted into the container, the terminal tab comprising an outwardly extending tab member (24) bent back over the base (12) of the terminal tab and along the side of the core. A protrusion (46) on the base contacts the bent tab member to minimize compression by the tab member of the circumferential edge of the end of the battery core when the core has been inserted into the container. An improved method of assembling such a battery also is disclosed.
    Type: Grant
    Filed: November 2, 1981
    Date of Patent: June 5, 1984
    Assignee: General Electric Company
    Inventors: Thomas R. DeMoully, Robert E. Rockey, John J. Strickland
  • Patent number: 4450049
    Abstract: A solid tantalum electrolytic capacitor is formed by a method comprisinganodizing a tantalum sintered body for substantial dielectric film growth in a substantially aqueous electrolyte;anodically treating said anodized tantalum body in at least one fused salt selected from the group of nitrates of alkali metals, nitrates of alkaline earth metals and nitrites of alkali metals with an applied voltage which is as high as possible but within a range wherein capacitance-decrease of the anode formed in the aqueous electrolyte is not caused; andanodically treating said fused salt-treated tantalum body in a substantially aqueous electrolyte with an applied voltage which is as high as possible but within a range wherein re-anodization will not occur, the temperature of said fused salt being in the range of C. to C.
    Type: Grant
    Filed: March 19, 1982
    Date of Patent: May 22, 1984
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Koreaki Nakata, Jiro Ueno, Yasuhiro Ogawa
  • Patent number: 4448859
    Abstract: Thionyl chloride cells are deactivated by introducing a solution of aluminum chloride in thionyl chloride into the cell.
    Type: Grant
    Filed: June 14, 1983
    Date of Patent: May 15, 1984
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Wayne S. Bishop, Richard A. Marsh
  • Patent number: 4444630
    Abstract: Acid electroplating baths for bright zinc plating containing a zinc salt, ammonium chloride and bath additives which include a carrier component comprising an alkyl substituted ammonium propoxylate salt, preferably a trialkylammonium propoxylate salt, and a lower molecular weight alkyl substituted naphthalene sulfonic acid, or bath soluble salt thereof, in combination with other brighteners and grain refiners for providing bright, ductile, fine grained, adherent deposits over a broad current density range.
    Type: Grant
    Filed: November 30, 1981
    Date of Patent: April 24, 1984
    Assignee: Richardson Chemical Company
    Inventor: Carl Steinecker
  • Patent number: 4440610
    Abstract: An improved process for the electrolytic production of aluminum by electrolysis of aluminum chloride in a molten salt electrolyte bath. The improved process is characterized by a reduction in solubility of the reduced aluminum metal as well as a smaller metal droplet size permitting closer anode-cathode spacing in the electrolysis cell and a lower electrical resistance. The improvement comprises performing the electrolysis in an electrolyte consisting essentially of from 0.5 to 15 wt. % aluminum chloride, from 0.5 to 40 wt. % of one or more alkaline earth metal chlorides selected from the class consisting of magnesium chloride, barium chloride, strontium chloride and calcium chloride, from 10 to 90 wt. % lithium chloride and the balance sodium chloride.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: April 3, 1984
    Assignee: Aluminum Company of America
    Inventors: Robert K. Dawless, Alfred F. LaCamera, Chester H. Klingensmith
  • Patent number: 4440838
    Abstract: An improved battery separator for lead-acid battery cells has low resistance to electrolyte ion transfer and can assist in holding paste in contact with a grid of an electrode plate during chemical reactions of the cell. The separator is formed by depositing an improved wetting composition to a polyolefin substrate comprised of entangled microfibers. The wetting composition which is deposited over and adhered to external surfaces of the microfibers is comprised of a substantially homogeneous admixture of an epoxy emulsion and a polyfunctional amine curing agent. When the separator is immersed in electrolyte, the amine groups in the cured resin of the wetting composition react with the acid electrolyte and are substantially completely neutralized forming a polymeric salt; in the process the fibers are rapidly wetted, providing a substantially permanent wetting characteristic in the electrolyte.
    Type: Grant
    Filed: June 7, 1982
    Date of Patent: April 3, 1984
    Assignee: Kimberly-Clark Corporation
    Inventor: George F. Schmidt
  • Patent number: 4433036
    Abstract: A reserve battery having a plurality of galvanic cells and a series of ports through which electrolyte can flow into the cells. A spring activated valve opens the ports during periods of angular acceleration of the battery and closes the ports when there is no acceleration.
    Type: Grant
    Filed: March 31, 1982
    Date of Patent: February 21, 1984
    Assignee: Honeywell Inc.
    Inventors: Robert J. Horning, William J. Eppley