Patents by Inventor John F. Sindorf

John F. Sindorf has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5264301
    Abstract: A metal oxide-hydrogen battery incorporating a system for maintaining a substantial uniform range of pressure of hydrogen gas in the battery. The battery includes an outer pressure vessel and a plurality of cells are contained in the vessel. A liquid electrolyte is impregnated within the cells and the battery is charged with hydrogen gas. A conduit connects the interior of the vessel with a venting zone, preferably a closed chamber, containing a hydrogen absorbing material. A first valve is located in the conduit and is designed to open when the battery is discharged to a preselected level. A second pressure regulated valve is also mounted in the conduit and opens to vent hydrogen from the vessel to the chamber, if the hydrogen pressure exceeds a predetermined value at the preselected state of discharge. The sequential venting of hydrogen during cycling of the battery will maintain the pressure of hydrogen in the vessel within a given range.
    Type: Grant
    Filed: April 14, 1992
    Date of Patent: November 23, 1993
    Assignee: Globe-Union Inc.
    Inventors: John F. Sindorf, William P. Segall
  • Patent number: 5173377
    Abstract: An apparatus for electrically connecting cell modules of a metal oxide-hydrogen battery. The battery includes an outer pressure vessel containing a plurality of cell modules which are each sealed in a plastic bag and each cell module is provided with a vent which is permeable to the flow of gas but impermeable to the flow of liquid electrolyte. A pair of annular electrical conductors are associated with each cell module and extend through aligned holes in the bag. The conductors of each cell module are electrically insulated from each other and are disposed around an insulating tie rod. One of the conductors is connected to the positive terminals of the cell module, while the other of the conductors is connected to the negative terminals. A series of spring washers are mounted on the tie rod and urge the portions of each bag bordering the holes therein into tight sealing relation with the flange of the respective conductor to prevent leakage of the electrolyte through the holes in the bag.
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: December 22, 1992
    Assignee: Globe-Union Inc.
    Inventor: John F. Sindorf
  • Patent number: 5059496
    Abstract: A nickel-hydrogen battery or cell having one or more pressure vessels containing hydrogen gas and a plurality of cell-modules therein. Each cell-module includes a configuration of cooperatively associated oxygen and electrolyte mangement and component alignment features. A cell-module having electrolyte includes a negative electrode, a positive electrode adapted to facilitate oxygen diffusion, a separator disposed between the positive and negative electrodes for separating them and holding electrolyte for ionic conductivity, an absorber engaging the surface of the positive electrode facing away from the separator for providing electrolyte to the positive electrode, and a pair of surface-channeled diffusion screens for enclosing the positive and negative electrodes, absorber, and separator and for maintaining proper alignment of these components.
    Type: Grant
    Filed: March 23, 1989
    Date of Patent: October 22, 1991
    Assignee: Globe-Union Inc.
    Inventor: John F. Sindorf
  • Patent number: 4934046
    Abstract: A method of establishing a hermetic seal about a terminal post of a battery comprises the step of forming a plurality of concentric ridges around the terminal post, positioning a tubular protrusion integral to the cover about the surface region of the terminal post containing the concentric ridges, and applying a radially directed force against the collar of such magnitude to cause the tubular protrusion to flow into intimate contact with the post and the concentric ridges.
    Type: Grant
    Filed: November 2, 1989
    Date of Patent: June 19, 1990
    Assignee: Globe-Union Inc.
    Inventor: John F. Sindorf
  • Patent number: 4923769
    Abstract: A pressure vessel construction for a rechargeable metal oxide hydrogen battery. The pressure vessel includes a generally cylindrical shell, the ends of which are enclosed by dome shaped heads. A metal fitting is mounted within an opening in at least one head and the electrical leads connected to the battery cell are sealed within an opening in the fitting. The vessel includes a flexible inner liner of material which is impervious to the passage of hydrogen gas and an outer layer of fiber reinforced resin which is capable of withstanding the internal pressure generated by the hydrogen. The inner liner can consist of a plurality of wrappings of thin plastic film, such as polyvinylidene chloride, or alternately the inner liner can consist of thin metal sections having overlapping edge portions sealed by resilient elastomeric sealing strips which permit expansion and contraction of the metal liner under varying internal pressure conditions, without causing major tensile stress in the metal.
    Type: Grant
    Filed: April 7, 1989
    Date of Patent: May 8, 1990
    Assignee: Globe-Union Inc.
    Inventors: Kenneth R. Jones, John F. Sindorf
  • Patent number: 4879191
    Abstract: A crimp terminal seal for a battery comprising a terminal post suitably given a plurality of ridges and recesses in one region circumscribing the post suitably positioned within a protrusion extending up from the cover of the battery. The protrusion is compressed and maintained in intimate contact against the post along the aforementioned region by a collar.
    Type: Grant
    Filed: March 23, 1989
    Date of Patent: November 7, 1989
    Assignee: Globe-Union Inc.
    Inventor: John F. Sindorf