Sealing Mass Or Compound Patents (Class 429/184)
-
Publication number: 20010012582Abstract: Provided are a prismatic type sealed battery suitable for enhancing a tightly sealing capability between a case and a leading terminal connected from the inside of the case to the outside of the case and simplifying the structure of the battery, and a method for making the same. The prismatic type sealed battery includes a case consisting of a can accommodating a positive electrode, a negative electrode and an electrolytic solution, and a cap plate welded to an opening of the can and sealed, a leading terminal insert-connected to a throughhole of the cap plate to then be led outside, and a fluoride resin injected between the leading terminal and the throughhole of the cap plate for insulation and sealing both elements. The leading terminal includes a head and a connecting portion inserted into the throughhole of the cap plate. The leading terminal is connected to one of the positive and negative electrodes and the case is electrically connected to the other electrode.Type: ApplicationFiled: December 27, 2000Publication date: August 9, 2001Inventor: Young-hoon Kim
-
Patent number: 6271158Abstract: A sealant for a solid oxide fuel cell comprises a glass material that acts as a matrix, with the glass material being present between about 40 to 90 wt. %. A gap-filler material is also in the sealant and selected from the group consisting of a metal material and a ceramic material, with the gap-filler material being present between about 10 to 60 wt. %. The sealant can seal a gap as large as about 3 mm.Type: GrantFiled: July 13, 1999Date of Patent: August 7, 2001Assignee: AlliedSignal Inc.Inventors: Liang A. Xue, James Piascik, Jean Yamanis, Gregory Lear, James Powers, Daniel Dalfonzo
-
Patent number: 6267790Abstract: A method of forming a seal between a lead on a battery cell and flexible packaging enclosing the cell that comprises the steps of chemically cleaning at least a portion of a lead of a battery; roughening the surface of the portion of a lead to increase the surface area thereof; coating the entire periphery of the portion of a lead with a layer of a first polymeric material; the coating having a minimum thickness about equal to the thickness of the lead; positioning the portion of the lead between two flexible laminate sheets, the laminate sheets each having a layer of a second polymeric material, the laminate sheets being positioned to engage each other wherein the portion of the lead is disposed between the polymeric layers of the flexible laminate sheet; and applying sufficient heat and pressure to the flexible laminate sheets to soften the polymeric layers on the flexible laminate to cause the polymer layers to flow around and completely coat the layer of polymeric material on the lead.Type: GrantFiled: March 18, 1999Date of Patent: July 31, 2001Assignee: NTK Powerdex, Inc.Inventors: Mark L. Daroux, Wanjun Fang
-
Patent number: 6268079Abstract: A metallic ring is insulatedly sealed around each of the positive electrode terminal and negative electrode terminal, previously, by the glass hermetic seal and ceramic hermetic seal in such a manner that it is sealed into the opening hole of the cover plate of a battery case. In this case, in order to prevent the corrosion of a metallic brazer which may occur in the ceramic hermetic seal and improve the workability, the ceramic material is brazed around the negative electrode terminal through a Au—Cu brazer or P—Cu brazer.Type: GrantFiled: November 24, 1999Date of Patent: July 31, 2001Assignee: Japan Storage Battery Co., Ltd.Inventors: Takefumi Inoue, Shinya Kitano
-
Publication number: 20010009739Abstract: An enclosed storage battery having an excellent closed tightness and reliability is obtained. An annular bump is formed integrally with the upper periphery of the penetration hole of a lead-alloy bushing buried in the top of the lid for covering the jar. The leading end of the pole passing through the penetration hole of the bushing is inserted into the lower part of the annular bump. A recess is formed on the top of the leading end of the pole so as to be easier to melt the upper portion of the pole, and by welding with the inner wall of the penetration hole of the bushing, the annular bump is later melted, and the bushing penetration hole is filled up with the fused lead.Type: ApplicationFiled: April 22, 1998Publication date: July 26, 2001Inventor: AKIRA IWAMURA
-
Publication number: 20010007730Abstract: After a negative electrode current collector (10) has been inserted into an insertion hole (28a) therein, a resin sealing element (28) and negative electrode terminal plate (12) are successively inserted into an aperture (1a) of a battery casing (1), and the aperture rim of battery casing (1) is then bent inwards and crimped to seal aperture (1a) of battery casing (1). Sealing element (28) is accommodated within battery casing (1) in an arrangement facing negative electrode terminal plate (12), with resin injection gate (28c) corresponding to resin injection port (27a) of metal molds (22˜24) during resin molding thereof positioned at the aperture end of battery casing (1).Type: ApplicationFiled: December 11, 2000Publication date: July 12, 2001Applicant: Matsushita Electric Industrial Co. Ltd.Inventors: Kenji Yamamoto, Tashikazu Kaneko, Takeshi Okubo, Toshina Saeki
-
Patent number: 6103418Abstract: A closed secondary battery having a sealing structure for preventing electrolyte leak for a long period is presented. An annular packing is chemically bonded in a ring form to the surface of a disk-shaped flange formed inside of a battery of a terminal pole projecting from inside to outside of the battery, by penetrating through a cover member of closed secondary battery. Fitting an annular spring while pulling the terminal to outside of the battery, the terminal pole is fixed in the cover member. At this time, the annular packing is compressed against the cover member, and the passage of electrolyte leak is shut by this compression.Type: GrantFiled: September 26, 1997Date of Patent: August 15, 2000Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kenji Sato, Hiroshi Inoue, Nobuyasu Morishita, Munehisa Ikoma
-
Patent number: 5948562Abstract: A metal foil laminate package for an electrochemical cell has a multilayered structure (32, 34) comprising a metal foil (40) sandwiched between layers of a thermoplastic (38) and a heat-sealable polymer (42). An electrically conducting tab (28) extends from the cell and has a layer of insulative tape (29) disposed on both sides of the tab. Apertures (50,52,60,62) formed through the various layers of the package expose both sides of the tab, providing sites for subsequent welding of the tab to external circuitry.Type: GrantFiled: November 3, 1997Date of Patent: September 7, 1999Assignee: Motorola, Inc.Inventors: Michael Fulcher, Paul Gies, Steven L. Hassenzahl
-
Patent number: 5856041Abstract: A sealed secondary cell maintaining enclosed property and battery performance for a long period in a wide range of environments of use including high temperature, high humidity, and vibration is presented. A terminal pole is composed of a current collector, a flange with a flat top surface, and a pole formed on the flange upper surface projecting at right angle, a rotation arresting portion of the terminal pole is formed by the flange and lower side of a lid, an annular packing is disposed between the flange upper surface and lid lower side so as to surround the pole, an annular pressing spring is pressed in from above the pole, the annular packing interposed between the flange upper surface and lid lower side is compressed in the vertical direction by the elastic force of the annular pressing spring, the annular pressing spring is stopped on the outer circumferential edge of the pole at a position for sealing and fixing the terminal pole in the lid, and thereby the battery jar is enclosed.Type: GrantFiled: October 21, 1996Date of Patent: January 5, 1999Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroshi Inoue, Shinji Hamada, Noboru Ito, Munehisa Ikoma
-
Patent number: 5834134Abstract: A sealed, through partition terminal for an electrochemical cell featuring the use of gasketing material to prevent the spread of electrolyte past the terminal seal assembly is disclosed. An orifice formed in a lid of an electrochemical cell accepts a terminal member that is secured to the lid with a fastener threaded onto the terminal member. A shoulder molded on the bottom face of the lid and adjacent to the orifice prevents axial movement of the terminal member while torquing the fastener. A gap formed between the wall of the orifice and the terminal member is filled with gasketing material that is compressed by torquing the fastener. The compressed gasketing material seals any gaps between the terminal member and lid orifice preventing electrolyte leakage.Type: GrantFiled: May 23, 1996Date of Patent: November 10, 1998Assignee: Hawker Energy Products, Inc.Inventors: John Willard Hooke, Mary Jo Frances Elwing
-
Patent number: 5811206Abstract: A feedthrough pin insulator and corresponding assembly for an electrochemical cell powering an implantable medical device are described herein. The feedthrough pin insulator electrically insulates a feedthrough pin extending between the internal and external portions of the cell from cell components having the same electrical potential as a cathode disposed within the cell. The feedthrough pin insulator extends between an anode disposed within the cell and a ferrule disposed in an aperture of a cover for sealing the cell. A gate or dam is disposed at one end of the insulator for preventing or inhibiting the formation of anode flash on the feedthrough pin or in other undesired locations or on certain cell components during the anode formation process. A method of forming an anode is also described which corresponds to the foregoing apparatus.Type: GrantFiled: October 31, 1997Date of Patent: September 22, 1998Assignee: Medtronic, Inc.Inventors: Walter C. Sunderland, David P. Haas
-
Patent number: 5709967Abstract: Disclosed are curable sealant compositions for coating a conductive bushing for a lead-acid cell or battery having positive and negative plates disposed within a container and a cover, the conductive bushing being molded into the cover and providing electrical communication with at least one of the plates, the bushing presenting an interface with the exterior of the bushing and the cover. The sealant compositions comprise a sealing elastomer in an amount from about 1% to about 15% by weight and a solvent in an amount of up to about 99% by weight. In accordance with the invention, the sealant composition is a terpene solvent, preferably a cyclic terpene and more preferably D-limonene. The sealant compositions preferably further comprise a reinforcing agent in an amount of about 1% to about 15% by weight. In use, at least a portion of a bushing is coated with the sealant composition, and the sealant composition is cured.Type: GrantFiled: November 12, 1996Date of Patent: January 20, 1998Assignee: GNB Technologies, Inc.Inventor: Steven R. Larsen
-
Patent number: 5663015Abstract: A sealed, through partition terminal for an electrochemical cell featuring the use of gasketing material to prevent the spread of electrolyte past the terminal seal assembly. An orifice formed in an inner lid of an electrochemical cell accepts a terminal member that is secured to the inner lid with a fastener threaded onto the terminal member. A shoulder molded on the bottom face of the inner lid and adjacent to the orifice prevents axial movement of the terminal member while torquing the fastener. A gap formed between the wall of the orifice and the terminal member is filled with gasketing material that is compressed by torquing the fastener. The compressed gasketing material seals any gaps between the terminal member and inner lid orifice preventing electrolyte leakage.Type: GrantFiled: October 18, 1995Date of Patent: September 2, 1997Assignee: Hawker Energy Products, Inc.Inventors: John Willard Hooke, Mary Jo Elwing
-
Patent number: 5604051Abstract: There is described an lithium--alloy/molten salt/metal sulfide electrochemical cell which eliminates the use of perforated baskets to restrain active materials and uses simple mechanical seal made from ceramic material. It also uses high melting point salt as the electrical insulator between the electrodes and the cell can. In the cell, the positive current collector is made from flexible graphite and a corrosion resistant metal. The cell is assembled in a low carbon steel case with side closure.Type: GrantFiled: October 17, 1994Date of Patent: February 18, 1997Inventors: Christopher J. Pulley, Steven J. Specht, Geoffrey Barlow
-
Patent number: 5601944Abstract: There can be provided a button type alkaline battery in which resistance to leakage of the electrolysis solution is improved. A button type alkaline battery includes a positive electrode can (1), a negative electrode cup (3) and a gasket (6). The negative electrode cup (3) has a cuff portion (7). The cuff portion (7) is inclined toward a center of a battery at an angle ranging from 5.degree. to 20.degree..Type: GrantFiled: June 9, 1995Date of Patent: February 11, 1997Assignee: Sony CorporationInventors: Norishige Yamaguchi, Kiyoshi Hosoda
-
Patent number: 5518837Abstract: An improved positive terminal feedthru for a lithium/metal sulfide battery cell is provided which permits electrical access to the positive terminal of the battery cell from outside the case. The positive terminal feedthru assembly includes a first annular compressible seal which is provided about the positive feedthru and abuts the positive terminal. A first bushing is provided around the positive feedthru adjacent to the first compressible seal. A second annular compressible seal is provided about the positive feedthru between the first bushing and the battery case. A second annular bushing is provided about the positive feedthru adjacent the opposite side of the case from the second compressible seal. An annular washer is provided around the positive feedthru adjacent the second annular bushing. This washer maintains a compressive load on the first and second compressible seals to account for expansion and contraction due to temperature cycling.Type: GrantFiled: October 17, 1994Date of Patent: May 21, 1996Assignee: Westinghouse Electric CorporationInventors: Christopher J. Pulley, Steven J. Specht, Geoffrey Barlow
-
Patent number: 5472802Abstract: A sealed battery case comprising: a case of formable metal; a lid for the case, the lid having an annular shroud defining the periphery of at least one opening; at least one terminal having a sealing lip at its circumference; where the terminal is crimp sealed into said annular shroud. Also described is a method of attaching a terminal in a lid opening of a battery case; the opening having an opening and an annular shroud surrounding the opening. The annular shroud is of an inner diameter slightly larger than the diameter of the opening and extending outward from the lid, and the terminal has a diameter smaller than the diameter of the opening and a sealing lip around its circumference. The sealing lip has a diameter in between the diameter of the opening and the diameter of the shroud; the method comprising the steps of: placing a seal of an insulating material; around the sealing lip; inserting the terminal into the shroud; and crimping the shroud around the seal.Type: GrantFiled: October 25, 1993Date of Patent: December 5, 1995Assignee: Ovonic Battery Company, Inc.Inventors: Art Holland, Kevin Dean, Donn Fillmore
-
Patent number: 5462819Abstract: 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. However, the potential also exists for anodic zinc to migrate via the absorbent separator and create a short path to the cathode. To prevent this, cells are fabricated wherein a separator is placed into the cells, a hot melt material is metered into the cell so that the hot melted material flows under the bottom edge of the separator, which is then pushed down and seated in the hot melt material as it cools. The end result is a barrier which is forms at the bottom of the cell and at both sides of the separator and virtually eliminates shorts from developing between the electrodes.Type: GrantFiled: June 10, 1994Date of Patent: October 31, 1995Assignee: Rayovac CorporationInventors: Robert J. Jacus, James A. Senn, Kenneth R. Kusel
-
Patent number: 5453331Abstract: A glass or glass-ceramic sealant for a SOFC having a coefficient of thermal expansion in the range of from about 8 to about 13.times.10.sup.-6 /.degree.C. and a viscosity of at least 10.sup.3 Pa-s at cell operating temperature. The sealant has a composition of SrO present in the range of from about 5 to about 60 mole percent, La.sub.2 O.sub.3 present in the range of from 0 to about 45 mole percent, Al.sub.2 O.sub.3 present in the range from 0 to about 15 mole percent, B.sub.2 O.sub.3 present in the range of from about 15 mole percent to about 80 mole percent, and SiO.sub.2 present in the range of from 0 to about 40 mole percent, wherein the material is a viscous fluid at cell operating temperatures of from about 600.degree. C. to about 1000.degree. C. The sealant may also be compounds of CaO present in the range of from 0 to about 35 mole percent, Al.sub.2 O.sub.3 present in the range from 0 to about 15 mole percent, B.sub.2 O.sub.Type: GrantFiled: August 12, 1994Date of Patent: September 26, 1995Assignee: University of ChicagoInventors: Ira D. Bloom, Kevin L. Ley
-
Patent number: 5380603Abstract: A sealed, through partition terminal for an electrochemical cell is disclosed featuring a high conductivity terminal member embedded in a lead strap current collector, penetrating a through hole in the partition wall. A cup-like well is formed around the hole to receive the terminal which is located and immobilized by the combination of a fastening member which grips the outer surface of the terminal, and by an epoxy contained within the cup-like well which embeds the fastening member and surrounds the terminal. An elastomeric sealing member is preferably compressed between the strap and the underside of the cup-like well.Type: GrantFiled: March 12, 1993Date of Patent: January 10, 1995Assignee: Hawker Energy Products, Inc.Inventor: John W. Hooke
-
Patent number: 5279909Abstract: A compact multilayer ceramic-to-metal seal structure, and method for manufacture, includes a ceramic core with opposed metallic surface layers. Between the ceramic core and each of the metallic surface layers is a transition zone which is made from graded layers of metallic and ceramic powders. These layers have progressively greater concentrations of metallic constituents than ceramic constituents the nearer the layer is to the metallic surface layer. Conversely, within the transition zone, the nearer a layer is to the ceramic core, the greater is its concentration of ceramic constituents. This seal is manufactured by simultaneously sintering a multilayer structure of compressed ceramic and metallic powders.Type: GrantFiled: May 1, 1992Date of Patent: January 18, 1994Assignee: General AtomicsInventors: M. Harlan Horner, Emilio M. Giraldez
-
Patent number: 5198314Abstract: A Polyphenylene Sulfide (PPS) seal for a cell for Alkaline cells, Mercury cells, or NiCad cells. The seal is not susceptible to leakage due to thermal excursions, thermal shocks, or long term storage. The all-polymer seal is of a predetermined geometrical configuration and provides a seal of a material composition for sealability of a cell between the negative or positive terminal cap and the cell can. The PPS seal can also include glass fiber and/or a composition from the olefin family.Type: GrantFiled: July 23, 1991Date of Patent: March 30, 1993Assignee: Alexander Manufacturing CompanyInventor: Dennis J. Gordy
-
Patent number: 5175067Abstract: Use of molydenum-containing alloys to induce wetting by TA-23 glass in metallic feedthroughs.Type: GrantFiled: November 9, 1990Date of Patent: December 29, 1992Assignee: Medtronic, Inc.Inventors: William J. Taylor, Joseph F. Lessar
-
Patent number: 5139898Abstract: An improved lithium-iodine battery is resistant to failure caused by iodine vapor within the battery. The entire interface of the current collector with the lithium anode is isolated from other battery components by a rigid, electrical-insulating sleeve.Type: GrantFiled: November 7, 1990Date of Patent: August 18, 1992Assignee: Mine Safety Appliances CompanyInventors: Alan A. Schneider, James R. Hetmanski, Darla J. Schrodt
-
Patent number: 5114811Abstract: An electrochemical cell is provided having a metallic anode comprising a lithium-aluminum alloy, a solid cathode of electronically conductive material and an ionic conductive non-aqueous electrolyte solution operatively associated and in direct contact with the anode and cathode. The metallic anode comprises a lithium-aluminum alloy wherein aluminum comprises from about 0% to about 50% by weight of the alloy. The solid cathode comprises a fluorinated carbon such as poly carbon monofluoride, a metal oxide or a metal oxide bronze. The non-aqueous electrolyte solution comprises a first component consisting of a high boiling aprotic solvent or combinations thereof, and a second component consisting of at least one lithium salt. The electrochemical cell demonstrates an energy density of about 0.6WH/CC and exhibits consistent performance predictability over an operational range of from about -20.degree. C. to about 180.degree. C.Type: GrantFiled: February 5, 1990Date of Patent: May 19, 1992Assignee: W. Greatbatch Ltd.Inventors: Steven J. Ebel, Michael F. Pyszczyk, Christine A. Frysz, Michael A. Zelinsky
-
Patent number: 5021307Abstract: Glass compositions containing CaO, Al.sub.2 O.sub.3, B.sub.2 O.sub.3, SrO and BaO in various combinations of mole % are provided. These compositions are capable of forming stable glass-to-metal seals with pin materials of 446 Stainless Steel and Alloy-52 rather than molybdenum, for use in harsh chemical environments, specifically in lithium batteries.Type: GrantFiled: September 7, 1990Date of Patent: June 4, 1991Assignee: The United States of America as represented by the United States Department of EnergyInventors: Richard K. Brow, Randall D. Watkins
-
Patent number: 4883726Abstract: The invention relates to a multi-cell battery of electro-chemical cells of the type which is likely to be severely damaged and which is apt to release a substantial quantity of heat when short-circuited.According to the invention, the multi-cell unit is provided with a certain filler in the space between the constituent electrochemical cells, which is either a solid with a melting point in a predetermined range of temperature, or a liquid. The filler ought to be electrically non-conducting, and its quantity ought to have an adequate heat capacity and it ought also to be capable to transfer heat to adjacent cells.Type: GrantFiled: May 22, 1987Date of Patent: November 28, 1989Inventors: Emanuel Peled, Mordechai Brand, Esther Elster, Josef Kimel, Ronen Cohen
-
Patent number: 4859547Abstract: A battery terminal post of the type for use in electrolytic devices contained by resilient electrolyte-resistant walls, wherein an opening in the electrolytic device wall is radially enlarged to form a bushing, into which is inserted a second T-shaped lead alloy bushing, into which in turn there is inserted a complementary third bushing of pure lead, which three bushings are then forced into intimate sealing contact by being radially expanded by the action of a punch and die in a swaging operation.Type: GrantFiled: October 6, 1987Date of Patent: August 22, 1989Assignee: Gates Energy Products, Inc.Inventors: David W. Adams, Larry K. W. Ching, Jr., Neil Puester
-
Patent number: 4804593Abstract: The present invention relates an enclosed cell and fabricating methods of the cell which has a safety valve mechanism for releasing gas from inside the cell when an internal pressure of the cell rises to an excessive degree. The characterizing feature of the invention resides in the use of a resin packing as sealing element, junctions between the resin packing and a metal lid and between the resin packing and a polar terminal being closed tight by thermal fusion. This construction assures reliable sealing in normal state, and permits the packing to break with an excessive rise in the internal pressure thereby to release gas from inside the cell. The cell of this invention is readily fabricated by injection molding or by a hot press process. Therefore, the enclosed cell according to this invention is fabricated very rationally and inexpensively, assures excellent sealing and safety, and has wide application.Type: GrantFiled: May 19, 1987Date of Patent: February 14, 1989Assignee: Sanyo Electric Co., Ltd.Inventors: Mitsunori Hara, Nobuhiro Nagao, Tooru Amazutsumi, Kanji Urushihara
-
Patent number: 4775604Abstract: The interface between the plastic cover of a battery container and the lead or other metal terminal post which extends therethrough is sealed with a rubber bushing which is compressed and extruded along the terminal post during installation and locked tightly in its compressed and extruded state. The bushing preferably has a pair of oppositely angled intersecting frustoconical surfaces on its exterior surface which are adapted to cooperate with mating surfaces surrounding the opening in the cover and on a locking retainer. The assembly provides a flexible seal which will accommodate the inevitable vertical movement of the terminal post as a result of battery element expansion. Most importantly, the assembly provides an extremely effective barrier to the migration of electrolyte along the terminal post to prevent outer terminal corrosion.Type: GrantFiled: July 29, 1987Date of Patent: October 4, 1988Assignee: Globe-Union Inc.Inventors: Thomas J. Dougherty, Richard A. Hamann, Matthias Geibl
-
Patent number: 4752545Abstract: A lead-acid battery includes a case having an apertured cover with the aperture being for passage of a terminal post therethrough for electrically connecting electrodes within the battery case to apparatus outside the battery, with the terminal post extending through the aperture. A rubber layer, devoid of rubber fillers and plasticizers, circumferentially surrounds the post at the aperture. A rubber-bonding epoxy polymer is between the rubber layer and the aperture through the case.Type: GrantFiled: May 7, 1987Date of Patent: June 21, 1988Assignee: C & D Power Systems, Inc.Inventors: William B. Brecht, Sudhan S. Misra
-
Patent number: 4684589Abstract: A battery seal is disclosed which non-destructively vents gases in response to abnormal pressure buildup, and substantially prevents moisture loss from or oxygen ingress into a battery cell. An airtight, preferably non-conductive plug is pressed downward onto a receiving member such as the top of a battery's container of active ingredients by a crimped battery jacket comprised of material of sufficiently elastic characteristics to regain its original configuration after deformation under temporary pressure.Type: GrantFiled: February 6, 1986Date of Patent: August 4, 1987Assignee: Rayovac CorporationInventor: Ted J. Van Dyke, Jr.
-
Patent number: 4683647Abstract: A lead-acid battery includes a case having an apertured cover with the aperture being for passage of a terminal post therethrough for electrically connecting electrodes within the battery case to apparatus outside the battery, with the terminal post extending through the aperture. A rubber layer, devoid of rubber fillers and plasticizers, circumferentially surrounds the post at the aperture. A rubber-bonding epoxy polymer is between the rubber layer and the aperture through the case.Type: GrantFiled: April 7, 1986Date of Patent: August 4, 1987Assignee: C & D Power Systems, Inc.Inventors: William B. Brecht, Sudhan S. Misra
-
Patent number: 4595557Abstract: A method of forming a hermetic seal with high hermeticity includes the steps of subjecting metal components or stock to hot isostatic pressing, forming a pin or body from the stock, and bonding the pin to a surface defining an opening in a hermetic body. A terminal with high hermeticity is provided by a metal component subjected to hot isostatic pressing and a seal bonded to the pin and body. The seal can be a glass to metal seal or ceramic to metal.Type: GrantFiled: April 11, 1985Date of Patent: June 17, 1986Assignee: Emerson Electric Co.Inventor: Benjamin Bowsky
-
Patent number: 4572877Abstract: The housing of an electrochemical cell system has a vent passageway defined by a flared flange. The flange is flared outwardly with respect to the longitudinal axis of the passageway so that the opening of the vent passageway facing to the interior of the housing is smaller than the opening of the vent passageway facing to the exterior of the housing. An electrically insulating material, such as glass, is fused in the passageway to form a hermetic seal. The outwardly flared flange facilitates removal of the seal material responsive to excessive internal cell pressures so the cell can be vented safely.Type: GrantFiled: June 27, 1985Date of Patent: February 25, 1986Assignee: Union Carbide CorporationInventor: Ernest D. Botos
-
Patent number: 4563402Abstract: A lead storage battery having a structure by which the terminals, cover and container may be bonded and sealed in a single bonding process using a bonding agent. The storage battery includes a plastic container covered by a plastic cover, battery plates having poles, housed in the container, terminals having first ends contacted to the poles and second ends projecting upward through the terminal, and bonding agent parting embedding the terminals at their first ends and fixing the cover and the container together. The container has a terminal receiving recess formed below and covered by the cover. The terminals have bends inserted in the recess and positioned below the bonding agent so as to define a space in the recess between the bends and the bonding agent so as to prevent overall surface contact therebetween.Type: GrantFiled: November 27, 1984Date of Patent: January 7, 1986Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kenji Kobayashi, Yasuhiko Uchida, Tsuyoshi Utsunomiya
-
Patent number: 4560629Abstract: In a combination of an electric storage battery and a device for making an external electrical connection to the battery, the connecting device includes a conductive member secured to a conductive battery terminal exposed at an external surface of the battery and a conductive cable connected to the conductive member and surrounded by an insulating sheath. In addition, the terminal and the conductive member are encapsulated in an electrically insulating material which is substantially self-sealing when punctured by a needle-pointed, electrical testing probe.Type: GrantFiled: July 9, 1981Date of Patent: December 24, 1985Assignee: Lucas Industries LimitedInventor: John L. Woodhouse
-
Patent number: 4523376Abstract: An electrochemical cell and method of making same are provided wherein the electrochemical cell includes a radial sealing function effected by the combination of a seal comprised of an amorphous polymer and a cell container wall having a stiffening rib on one axial side of the seal and a lip on the other side of the seal wherein the rib and the lip eliminate springback of the container wall upon removal of the external radial force establishing the compressive sealing forces.Type: GrantFiled: June 17, 1983Date of Patent: June 18, 1985Assignee: General Electric CompanyInventors: William C. Thibault, Paul E. Pate
-
Patent number: 4508797Abstract: A passthrough seal is disclosed for electrically isolating the terminal in a lithium/metal sulfide cell from the structural cell housing. The seal has spaced upper and lower insulator rings fitted snuggly between the terminal and an annularly disposed upstanding wall, and outwardly of a powdered insulator also confined between the upstanding wall and terminal. The adjacent surfaces of the upper insulator ring and the respective upstanding wall and terminal are conically tapered, diverging in the axial direction away from the cell interior, and a sealing ring is located between each pair of the adjacent surfaces. The components are sized so that upon appropriate movement of the upper insulator ring toward the lower insulator ring the powdered insulator and sealing rings are each compressed to a high degree. This compacts the powdered insulator thereby rendering the same highly impervious and moreover fuses the sealing rings to and between the adjacent surfaces.Type: GrantFiled: July 26, 1983Date of Patent: April 2, 1985Assignee: The United States of America as represented by the United States Department of EnergyInventors: Reinhard Knoedler, Paul A. Nelson, Hiroshi Shimotake, James E. Battles
-
Patent number: 4430396Abstract: A battery terminal post seal manufacture wherein a battery terminal post (14) is sealed to a battery case wall portion (12) by a body of sealing material (17) fixedly sealed to the terminal post and movably sealed to the portion of the battery case defining the opening (13) through which the terminal post extends. In one form, the sealing space (16) receiving the flowable sealing material is defined by inner and outer peripheral encircling ribs (18,19) on the terminal post. In another form, the outer closure (122) of the sealing space is defined by a cap (122) removably mounted to the terminal post end (123) by a threaded element (126). In another form, the terminal post is provided with a peripheral recess (227) within the battery case opening (213), with the post (214) having snug fit with the battery case in the opening so as to define the lowermost sealant dam.Type: GrantFiled: December 21, 1981Date of Patent: February 7, 1984Assignee: GNB Batteries Inc.Inventor: William B. Hayes, Jr.
-
Patent number: 4350747Abstract: An electrochemical cell system assembled in a closed housing in which said housing has a protruding terminal electronically insulated from and hermetically sealed to said housing using a layer of insulating material (e.g., glass or ceramic) and wherein the exposed external interfacial areas of the insulating material/terminal and the insulating material/cell housing, and preferably also the exposed external area of the insulating material, are coated with a layer of nonconductive, water-resistant, protective material (e.g., wax or asphalt) so as to prevent seal corrosion and electrolyte leakage from the cell when it is exposed to a high humidity environment.Type: GrantFiled: June 16, 1981Date of Patent: September 21, 1982Assignee: Union Carbide CorporationInventor: Vicente S. D. Alberto
-
Patent number: 4337301Abstract: A lead-acid battery having a unique arrangement for making electrical connection to the battery. The arrangement includes L-shaped lugs molded into the upper surface of the casing. The lugs have cylindrical apertures extending horizontally therethrough for mating with the connector posts of the battery plates. Threaded pin terminals insert through a receptacle which is slidably mounted with a slot in a side wall of the battery. The pin terminals are threaded into nuts which are cast within the L-shaped lugs.Type: GrantFiled: February 23, 1980Date of Patent: June 29, 1982Assignee: Teledyne Industries, Inc.Inventors: David L. Rorer, Jasper E. Hardin
-
Patent number: 4331748Abstract: The present invention comprises a battery cover that provides a sliding seal about the terminal posts of battery elements within a battery jar so that axial movement between the cover and such posts can occur when welding battery covers in place onto battery jars or during use of the battery to absorb any axial motion of the terminal posts due to plate growth.Each opening is provided with upper and lower seals which together define a chamber between them and the outer surface of the terminal post. This chamber is connected by means of a passageway to an inlet port so that following insertion of the terminal post through the openings and through the upper and lower seals, sealant material can be inserted into that annular chamber. A complete seal will be provided about the periphery of the terminal post lying between the two seals that will allow relative movement between the cover and the terminal post.Type: GrantFiled: December 3, 1980Date of Patent: May 25, 1982Assignee: Hardigg Industries, Inc.Inventors: James S. Hardigg, Edward W. Turner
-
Patent number: 4326016Abstract: This invention is directed toward a seal (25) for fused salt batteries (10) having a current conducting rod (19) partially within said battery and partially outside which includes a layer of compressible material (32) on the body of the current conducting rod leaving exposed the opposite ends thereof and a swaged metal sheath (33) covering and compressing the layer of material to approximately its maximum density. Optionally, a sealing glass (35) having a low coefficient of thermal expansion approximating that of the current conducting rod and the metal sheath can also be employed over the end of the rod and/or a plating (31) of a conductive metal can be provided over the end of the current conducting rod outside of the battery and/or a separate coating (28) of a different material can be deposited on the rod between the rod and the layer of compressible material. A process is also provided for forming the seal.Type: GrantFiled: December 30, 1980Date of Patent: April 20, 1982Assignee: The Standard Oil CompanyInventors: Theodore B. Selover, Jr., Thomas H. Hacha
-
Patent number: 4259389Abstract: A high pressure, low porosity wet seal for a substrate in a fuel cell in which the seal is made up of a granular material having a particle size varying from 10 to 0.1 microns in size bonded together with polytetrafluoroethylene to prevent leakage of the gaseous fuel or oxidant from the cell.Type: GrantFiled: December 22, 1978Date of Patent: March 31, 1981Assignee: United Technologies CorporationInventors: Raymond W. Vine, Stephen T. Narsavage
-
Patent number: 4245014Abstract: A multistaged high pressure post seal system resistant to acid attack. A post cavity (18), formed within a battery case (14), contains a post (16) projecting through a bore (20) at the base of the cavity (18). An O-ring (24) disposed between the post (16) and the bore (20) of the cavity (18) forms a first seal. A self-sealing member (32 or 40) in communication with the post (16) forms a second seal whereas epoxy (36) introduced into the cavity (18) forms a third seal. Two embodiments are disclosed.Type: GrantFiled: August 30, 1979Date of Patent: January 13, 1981Assignee: ESB International Corp.Inventors: William E. Veit, Jr., Kusal K. Das
-
Patent number: 4182028Abstract: An ultra-thin hermetically sealed button-type electrochemical cell is disclosed comprising a pair of mating metallic housing members, at least one of which is generally dish shaped to define an enclosed space therebetween. A peripheral opening defining a fill port is formed in one of the housing members, preferably at the junction formed by the mating surfaces. The interfacing surfaces of the cell housing members are welded together subsequent to the insertion of the internal cell components and prior to the addition of the electrolyte to form a hermetic seal. The electrolyte may then be added and the fill port hermetically sealed by welding. Owing to its relatively small size, the fill port may be quickly sealed so that the heat generated during the weld process is insufficient to volatilize the electrolyte.Type: GrantFiled: January 18, 1978Date of Patent: January 8, 1980Assignee: GTE Laboratories Inc.Inventors: James Epstein, Nikola Marincic
-
Patent number: 4158721Abstract: A glass-to-metal seal for an electrochemical cell terminal includes a formed apertured plate and a tack-shaped terminal pin. The formed apertured plate has a relief ring of concavo-convex configuration and the terminal pin has the vertical section thereof within the aperture and the horizontal section spaced away from the plate. A glass seal is formed between the relief ring and about the terminal pin, including the space between the horizontal section and the plate by the application of heat and pressure within a carbon mold.Type: GrantFiled: May 11, 1978Date of Patent: June 19, 1979Assignee: GTE Sylvania IncorporatedInventors: John J. Decker, Donald J. Kantner
-
Patent number: 4117211Abstract: Battery with terminal posts having low resistance, high-strength tubular loop inserts. A lead receptacle encircled by a synthetic plastic molding surrounds the post. A weldment bead is between the post and the lead receptacle. Preferably the top of the post is rectangular and the connector cable crimped into the insert protrudes at about 45.degree. from the battery.Type: GrantFiled: April 11, 1977Date of Patent: September 26, 1978Assignee: Varta Batterie AktiengesellschaftInventors: Heinz Schuster, Rolf Prange
-
Patent number: 4078122Abstract: Lead storage battery terminals are equipped with inserts of high conductivity, high strength metal, having protruding portions in the form of annular loops mounted at right angles to the terminals.Type: GrantFiled: July 15, 1976Date of Patent: March 7, 1978Assignee: Varta Batterie AktiengesellschaftInventors: Ulrich Lotzsch, Heinz Schuster