Patents by Inventor Joseph Lynn Passaniti

Joseph Lynn Passaniti 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: 6461761
    Abstract: An elongate, generally tubular, air depolarized electrochemical cell (10) comprising a cathode (14), including an air cathode assembly (26), extending about the tubular circumference, and along the tubular length, of the cell (10), an anode (12), a separator (16) between the anode (12) and the cathode (14), electrolyte, a top closure member (177, 200), and a bottom closure member (114, 202). The cathode assembly (26) is fixedly held, by a friction fit, in a slot (116) at the bottom of the cell. The slot can be developed, for example, by inner (110) and outer (114) walls of a cathode can (28), by inner (226) and outer (224) walls of a bottom closure member (202), or by an outer wall (114) of a cathode can (28) and an opposing outer wall of a plug (128) on the interior of the cell.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: October 8, 2002
    Assignee: Rayovac Corporation
    Inventors: Gregory Scott Moy, John Edward Oltman, Robert Brian Dopp, Joseph Lynn Passaniti, Michael Andrew Ward
  • Patent number: 6436571
    Abstract: An elongate, generally tubular, air depolarized electrochemical cell (10) comprising a cathode (14), including an air cathode assembly (26), extending about the tubular circumference, and along the tubular length, of the cell (10), an anode (12), a separator (16) between the anode (12) and the cathode (14), electrolyte, a top closure member (177, 200), and a bottom closure member (114, 202). The cathode assembly (26) is fixedly held, by a friction fit, in a slot (116) at the bottom of the cell. The slot can be developed, for example, by inner (110) and outer (114) wars of a cathode can (28), by inner (226) and outer (224) walls of a bottom closure member (202), or by an outer wall (114) of a cathode can (28) and an opposing outer wall of a plug (128) on the interior of the cell.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: August 20, 2002
    Assignee: Rayovac Corporation
    Inventors: Joseph Lynn Passaniti, Susan Jean Launder, John Edward Oltman, Robert Brian Dopp, Gregory Scott Moy, Michael Andrew Ward
  • Patent number: 6368738
    Abstract: An air depolarized cell comprises an anode, a cathode, including an air cathode assembly openly exposed to the ambient environment and/or defining at least a portion of the outer surface of the cell. The cell can comprise a bottom member defining a bottom of the cell, and a top member defining a top of the cell, the air cathode assembly extending between the bottom member and the top member as the exposed or outer portion of the cell. An anode cavity can be disposed inwardly of the separator and upwardly of the bottom member, and contain a mass of electroactive anode material. An elongate anode current collector preferably extends into the anode material. The top member can comprise a top contour washer having inner and outer downwardly depending legs receiving an upper edge portion of the cathode assembly in a slot therebetween, and an insulating grommet in the slot, electrically insulating the cathode assembly from the top contour washer and sealing against liquid leakage out of the cell through the slot.
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: April 9, 2002
    Assignee: Rayovac Corporation
    Inventors: Joseph Lynn Passaniti, Gregory Scott Moy
  • Patent number: 6296961
    Abstract: Cathode assembly precursor cathode assembly (26) and elongate air depolarized electrochemical cells (10) made therewith. Cathode assembly precursor comprises a closed-loop elongate cathode current collector (32), and perforations (56) from outer to inner surfaces, and catalystically active carbon extending into the perforations (56). The current collector (32) can be cylindrical and can be free from longitudinal jointing, or can have a longitudinal joint (54), preferably free from overlap of the side wall. The current collector (32) can comprise an imperforate edge region at the top (42) and/or bottom (44), left (48) and/or right (46) edge. The perforations (56) define an open traction of the wall, of about 45 to about 70 percent. Typical cathode assemblies (26) have air diffusion member (36) on the outer surface of the cathode assembly (26). Such air diffusion member (36) typically has thickness of about 0.0025 to 0.005 inch (about 0.06 to about 0.13 mm.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: October 2, 2001
    Assignee: Rayovac Corporation
    Inventors: Gregory Scott Moy, Michael Andrew Ward, Robert Brian Dopp, Robert Brian Loch, John Edward Oltman, Joseph Lynn Passaniti
  • Patent number: 6261709
    Abstract: This invention teaches an elongate air depolarized electrochemical cell. The cell has a cathode, including an air cathode assembly, and a separator disposed inwardly of the air cathode assembly. A bottom member defines a bottom of the cell. An anode cavity, defined inwardly of the separator and the bottom member, receives a mass of electroactive anode material. An elongate hollow tube anode current collector is in electroactive contact with the mass of electroactive anode material. The anode current collector preferably has an enlarged cross-section such that the average distance between the anode current collector and the separator is reduced, thereby to reduce the overall mass of electroactive anode material used in the cell.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: July 17, 2001
    Assignee: Rayovac Corporation
    Inventors: Joseph Lynn Passaniti, Gregory Scott Moy, Michael Andrew Ward
  • Patent number: 6210826
    Abstract: An elongate air depolarized electrochemical cell (10). A grommet (18) closes the top of the cell (10). A seal (36) can extend upwardly into a slot (174) between the grommet (18) and a top closure member (177) such as at the top of a cathode can (28), or a separate top closure member (200). Cathode assembly (26) and separator (16) can extend into the slot (174). The seal is between the grommet (18) and cathode assembly (26), or between grommet (18) and separator (16). or both. The seal can extend upwardly into the slot (174) from an outer surface of the cathode assembly (26), can extend about respective upper edges of the cathode current collector (57), catalyst, and separator (16), and downwardly toward, preferably against or along the inner surface of, the separator (16).
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: April 3, 2001
    Assignee: Rayovac Corporation
    Inventors: Robert Brian Dopp, John Edward Oltman, Gregory Scott Moy, Michael Andrew Ward, Joseph Lynn Passaniti
  • Patent number: 6197445
    Abstract: An elongate, generally tubular, air depolarized electrochemical cell (10) comprising a cathode (14), including an air cathode assembly (26), extending about the tubular circumference, and along the tubular length, of the cell (10), an anode (12), a separator (16) between the anode (12) and the cathode (14), electrolyte, a top closure member (177, 200), and a bottom closure member (114, 202). The cathode assembly (26) is fixedly held, by a friction fit, in a slot (116) at the bottom of the cell. The slot can be developed, for example, by inner (110) and outer (114) walls of a cathode can (28), by inner (226) and outer (224) walls of a bottom closure member (202), or by an outer wall (114) of a cathode can (28) and an opposing outer wall of a plug (128) on the interior of the cell.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: March 6, 2001
    Assignee: Rayovac Corporation
    Inventors: Michael Andrew Ward, Robert Brian Dopp, Joseph Lynn Passaniti, Gregory Scott Moy, John Edward Oltman
  • Patent number: 6087030
    Abstract: This invention pertains to novel alkaline electrochemical cells having high drain capacities, especially cells having high drain rate capabilities at voltages of at least 1.1 volts for use in small appliances such as hearing aids. The anode includes anode material in the cells including potassium hydroxide, zinc powder, 0.02% to 0.5% of a reaction rate enabling compound selected from a compound of indium, cadmium, gallium, thallium, germanium, tin, or lead, with indium compounds being preferred. The anode material optionally further includes a low level of mercury, and preferably a surfactant comprising hydroxyethylcellulose. The cathode provides sufficient oxidative capability to oxidize the zinc at a sufficient rate to support the electrical drain demands on the cell. A cathode, in a preferred zinc air cell for a hearing aid, includes at least 5 air ports, evenly distributed over the surface of the bottom of the cathode can.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: July 11, 2000
    Assignee: Rayovac Corporation
    Inventors: Randall L. Collien, Patrick J. Spellman, Robert B. Dopp, John Edward Oltman, John David Burns, Joseph Lynn Passaniti, Michael Joseph Root
  • Patent number: 6001508
    Abstract: Solid divalent silver oxide is reacted in hot aqueous alkaline reaction medium with a solid bismuth component and a reducing agent. The reaction product comprises a novel compound containing silver, bismuth, and oxygen, which is used in making cathode pellets for use in alkaline electrochemical cells. The cells exhibit low internal impedance and substantially single voltage discharge characteristic of monovalent silver oxide while retaining a significant portion of the coulombic capacity a of divalent silver cathode, without toxicity problems attendant cathodes containing lead and/or cadmium. Particulate cathode materials are disclosed comprising an intermediate layer of AgO.sub.2 disposed between a core of AgO and an outer layer comprising silver and bismuth moieties.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: December 14, 1999
    Assignee: Rayovac Corporation
    Inventors: Joseph Lynn Passaniti, El-Sayed A. Megahed, Nuri A. Zreiba
  • Patent number: 5932367
    Abstract: This invention pertains to novel electrochemical metal air cells having improved closed circuit voltage characteristics. The improved voltage characteristics are illustrated at a constant load of 51 ohms. The closed circuit voltage during an initial placement into use of the cell of the invention has a decreased voltage drop relative to prior art cells, and recovers to a higher voltage. For example, the closed circuit voltage of the metal air cell drops to a minimum voltage during the first 20 seconds of initial placement into use. The minimum voltage is no more than 22% less than the initial open circuit voltage. This voltage drop is less than the voltage drop of other known metal air cells at 51 ohms. Metal air cells of the invention recover, during the first minute of use, to a closed circuit voltage of at least 79% of the initial open circuit voltage. The value of the open circuit voltage of the metal air cell of the invention is preferably about 1.43 volt.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: August 3, 1999
    Assignee: Rayovac Corporation
    Inventors: Randall L. Collien, Patrick J. Spellman, Robert B. Dopp, John Edward Oltman, John David Burns, Joseph Lynn Passaniti, Michael J. Root
  • Patent number: 5721065
    Abstract: This invention pertains to novel alkaline electrochemical cells having high drain capacities, especially cells having high drain rate capabilities at voltages of at least 1.1 volts for use in small appliances such as hearing aids. The anode includes anode material in the cells including potassium hydroxide, zinc powder, 0.02% to 0.5% indium as indium compound separate from the zinc powder, optionally a low level of mercury, and preferably a surfactant comprising hydroxyethylcellulose. The cathode provides sufficient oxidative capability to oxidize the zinc at a sufficient rate to support the electrical drain demands on the cell. A cathode, in a preferred zinc air cell for a hearing aid, includes at least 5 air ports, evenly distributed over the surface of the bottom of the cathode can. Cells of the invention exhibit prolonged operation at relatively constant voltage over 1.
    Type: Grant
    Filed: October 16, 1995
    Date of Patent: February 24, 1998
    Assignee: Rayovac Corporation
    Inventors: Randall L. Collien, Patrick J. Spellman, Robert B. Dopp, John Edward Oltman, John David Burns, Joseph Lynn Passaniti, Michael Joseph Root