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| Number | Title | Issue Date |
| 5500308 | Electrochemical cell having an inner seal member This invention pertains to electrochemical cells, and specifically to an inner seal member in an electrochemcical cell. The inner seal member is positioned against, and in intimate contact with that portion of the separator which extends above the cathode... | 03/19/1996 |
| 5462819 | Rechargeable alkaline round cell having hot melt barrier During repeated cycling of alkaline manganese dioxide cells, it is critical to ensure that adequate barrier protection is formed and maintained between the anode and cathode of the cell to prevent shorts from occurring between the cathode and anode. Howev... | 10/31/1995 |
| 5432028 | Electrolyte containment barrier for bipolar cells in high temperature molten salt batteries An improved battery of the type formed of cells stacked in series. The positive and negative electrodes of each cell being separated by a separator and each cell being separated by a respective bipolar wall. A sleeve-like seal is provided around the perip... | 07/11/1995 |
| 5422201 | Current collector assembly for an electrochemical cell An electrochemical cell including a current collector assembly having a current collector, a seal and a compression means wherein the compression means and collector exert minimum tension and maximum compressive stresses on the seal thereby avoiding leaka... | 06/06/1995 |
| 5188909 | Electrochemical cell with circuit disconnect device An electrochemical cell employing a safety disconnect device which employs a low melting heat fusible conductive material, such as solder, to secure an outwardly biased external conductive terminal to one terminal of the cell so that when the solder melts... | 02/23/1993 |
| 5152806 | Battery heat sealing machine and method A battery heat seal machine and method for sealing a top cover to a battery container. The machine has a one-piece heating platen with thermal expansion features which eliminate stress on the platen bearings that support the platen. A new type of top cove... | 10/06/1992 |
| 5079108 | Dry cell seal closure An improved dry cell seal closure is disclosed which will substantially prevent moisture loss from and/or oxygen ingress into a battery cell while maximizing the volume available within the cell for the cathode mix core. The seal closure comprises a seal ... | 01/07/1992 |
| 4999264 | Aqueous electrochemical cell The present invention relates to the use of a gelling agent between the plastic seal and the outer cover of an electrochemical cell.... | 03/12/1991 |
| 4654963 | Method for making electrochemical cell having cast-in-place insulator An electrochemical cell having a conductive casing and an electrode plate assembly received therein, the plate assembly having exposable edge portions adjacent an interior surface of the casing, and insulation means comprising a nonconductive insulating c... | 04/07/1987 |
| 4632887 | Galvanic primary cell A primary element of the round-cell type is effectively protected from desiccation by a sealing washer made of a flexible foamed plastic (preferably foamed PVC), placed above the depolarization electrode and clamped between the positive cap and the zinc c... | 12/30/1986 |
| 4448860 | Galvanic element with integral getter Non-aqueous alkaline cells, particularly those with Li anodes, are effectively protected against oxidation or carbonization due to inwardly diffusing moisture by providing them with a getter material of high specific adsorbtivity for gases. For this, ther... | 05/15/1984 |
| 4447507 | Contact in alkaline electric cells A contact assembly for use in alkaline electric cells, includes a inner metal disk and an outer metal disk which engage one another coaxially when embedded in a cell end cover to form a cell anode. The inner metal disk has a neck-like cylindrical projecti... | 05/08/1984 |
| 4430395 | Cell with overflow spout A galvanic cell (10), useful in batteries (50), including a can (12). The can (12) is equipped with a spout (20) to permit controlled cell (10) sealing and sealant (18) overflow (52).... | 02/07/1984 |
| 4419420 | Battery container and lid A anode lid of a battery container having a peripheral portion U letter shaped in section, with the outer peripheral side formed thicker than the inner peripheral side, and a method of manufacturing the same. In a process of manufacture of the anode lid, ... | 12/06/1983 |
| 4256815 | Seals for electrochemical cells A sealed electrochemical cell having a secondary seal comprising a bead of a polyamide adhesive disposed on the top of the cell's gasket and extending into the cover-gasket and the container-gasket interfaces, thereby filling any crevices at those interfa... | 03/17/1981 |
| 4128705 | Galvanic element, particularly alkaline storage battery In a galvanic element which has a tendency to leak electrolyte at the lid seal, there is formed, on the metal enclosure portion which bears against the seal, a passive oxide surface layer which is not reducible at the negative electrode potential.... | 12/05/1978 |
| 4124738 | Seal construction for primary cells The cell cup of a primary element has a turned-over (crimped) rim engaging the underside of a synthetic plastic sealing member. The cell rim is turned over to between 140° and 190° and is engaged by the underside of the sealing member to the extent of 5... | 11/07/1978 |
| 4117300 | Redundant welding method for metal battery containers Hermetic sealing of battery containers is accomplished in such containers comprising metal bodies provided with flanges by first mating the bodies so the flanges are coextensive, planar resistance welding the bodies together through the flanges and subseq... | 09/26/1978 |
| 4087595 | Multi-cell battery and method of making A battery sealed against electrolyte leakage by surrounding a stack of cells with cylindrical layer of two ply construction with absorbing or blotting paper surrounded by an impervious plastic cylindrical layer, with hot melt plastic plugs at both ends of... | 05/02/1978 |
| 4079173 | Leak resistant dry cells A leak-resistant dry cell comprises a negative electrode formed by a zinc tube which is designed to be consumed when the cell voltage has fallen to e.g. 0.75 volt, a sealed bag of flexible plastics material enclosing said zinc tube and surrounded by a cyl... | 03/14/1978 |
| 4078126 | Electric cell The invention relates to a preferably cylindrical electric cell having its anode constituted by a tube made of zinc for example. One end of the tube fits into a metallic cup having a bottom and a cylindrical wall; a gasket is interposed between the tube a... | 03/07/1978 |
| 4056659 | Primary dry cell having a novel venting closure A primary dry cell comprising a metal anode cup having a cathode mix therein, an open end, a central cathode rod through the open end, and a closure, the closure having a central bore and a venting sleeve defined by an annular groove in the closure and be... | 11/01/1977 |
| 4053692 | Hermetically sealed cells Hermetic closure for electrochemical cells utilizing glass to metal seals in combination with electrolyte introduction means. A hollow tube anode current collector is sealed to a glass ring which is sealed to a metal outer ring.... | 10/11/1977 |
| 4052533 | Pressure relief flapper vent valve for galvanic cells A galvanic dry cell having a resealable subseal comprising a cup-shaped flapper vent valve having an opening at its center for receiving and contacting the cell's current collector rod and a peripheral edge segment contacting and conforming to the inner w... | 10/04/1977 |
| 4048401 | Hermetically sealed primary electrochemical cell and a method for its production A hermetically sealed primary electrochemical cell is described together with a method for its production which is especially useful with electrochemical systems which include an electrolytic solution having a volatile solvent material. The hermetic seal ... | 09/13/1977 |
| 3971673 | Electrochemical cell with fluid-tight casing and method of construction The invention concerns an electric cell having a fluid-tight box comprising a metallic tank having a bottom and a lateral wall and at least one current output insulated from the tank. That cell is characterized more particularly in that the housing compri... | 07/27/1976 |
| 3957538 | Alkaline battery seal A seal for a terminal member of a nickel-cadmium battery cell, provided with a, for example Ceramvar, terminal electrode which is first of all electroplated with nickel and is then electroplated with chromium. A ceramic ring is located between the termina... | 05/18/1976 |
| 3940287 | Primary dry cell with gas-venting passageway around the cathode mix Primary dry cell comprising a metal anode cup having a cathode mix therein, separated from the side wall of the anode cup by a porous, ionically permeable separator, and having an open end which is gas-tightly sealed by a closure including a vent, wherein... | 02/24/1976 |
| 3932196 | Primary dry cell with gas-venting passageway through the cathode mix Primary dry cell comprising a metal anode cup having a cathode mix therein and having an open end which is gas-tightly sealed by a closure including a vent, wherein a gas-venting passageway extends through the cathode mix into communication with the void ... | 01/13/1976 |
