Patents by Inventor Gregory J. Davidson
Gregory J. Davidson 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).
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Patent number: 10726998Abstract: A feedthrough device includes a body having longitudinally spaced first and second end faces and an inner surface defining an opening extending longitudinally through the body, a conductor extending within the opening of the body, and an insulator extending within the opening of the body transversely intermediate the conductor and the inner surface of the body to insulate the conductor from the body, where the conductor includes an interior portion surrounded by the insulator and an exterior portion extending beyond the insulator, the exterior portion having a diameter that is greater than a diameter of the interior portion.Type: GrantFiled: January 6, 2017Date of Patent: July 28, 2020Assignee: Energizer Brands, LLCInventors: William C. Bushong, Gregory J. Davidson, Terrance W. Gurrie, Jr., Sarah L. Westcott
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Patent number: 10629865Abstract: In a feedthrough device and method of assembly thereof, a body has longitudinally spaced first and second end faces and an inner surface defining a longitudinally extending opening. A conductor extends within the opening and an insulator extends within the opening transversely intermediate the conductor and the inner surface of the body to insulate the conductor from the body. The body has at least one indentation formed longitudinally into at least one of the first and second end faces, with a portion of the inner surface of the body being displaced transversely against the insulator in correspondence with the at least one longitudinal indentation to crimp the insulator and conductor within the opening of the body and maintain a hermetic seal across the feedthrough device.Type: GrantFiled: October 4, 2017Date of Patent: April 21, 2020Assignee: Energizer Brands, LLCInventors: Kristopher Bilek, Gregory J. Davidson, William C. Bushong
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Publication number: 20190027313Abstract: A feedthrough device includes a body having longitudinally spaced first and second end faces and an inner surface defining an opening extending longitudinally through the body, a conductor extending within the opening of the body, and an insulator extending within the opening of the body transversely intermediate the conductor and the inner surface of the body to insulate the conductor from the body, where the conductor includes an interior portion surrounded by the insulator and an exterior portion extending beyond the insulator, the exterior portion having a diameter that is greater than a diameter of the interior portion.Type: ApplicationFiled: January 6, 2017Publication date: January 24, 2019Inventors: William C. Bushong, Gregory J. Davidson, Terrance W. Gurrie, Jr., Sarah L. Westcott
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Publication number: 20180026237Abstract: In a feedthrough device and method of assembly thereof, a body has longitudinally spaced first and second end faces and an inner surface defining a longitudinally extending opening. A conductor extends within the opening and an insulator extends within the opening transversely intermediate the conductor and the inner surface of the body to insulate the conductor from the body. The body has at least one indentation formed longitudinally into at least one of the first and second end faces, with a portion of the inner surface of the body being displaced transversely against the insulator in correspondence with the at least one longitudinal indentation to crimp the insulator and conductor within the opening of the body and maintain a hermetic seal across the feedthrough device.Type: ApplicationFiled: October 4, 2017Publication date: January 25, 2018Inventors: Kristopher Bilek, Gregory J. Davidson, William C. Bushong
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Patent number: 9812679Abstract: In a feedthrough device and method of assembly thereof, a body has longitudinally spaced first and second end faces and an inner surface defining a longitudinally extending opening. A conductor extends within the opening and an insulator extends within the opening transversely intermediate the conductor and the inner surface of the body to insulate the conductor from the body. The body has at least one indentation formed longitudinally into at least one of the first and second end faces, with a portion of the inner surface of the body being displaced transversely against the insulator in correspondence with the at least one longitudinal indentation to crimp the insulator and conductor within the opening of the body and maintain a hermetic seal across the feedthrough device.Type: GrantFiled: February 27, 2014Date of Patent: November 7, 2017Assignee: SPECTRUM BRANDS, INC.Inventors: Kristopher Bilek, Gregory J. Davidson, William C. Bushong
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Publication number: 20140315075Abstract: In a feedthrough device and method of assembly thereof, a body has longitudinally spaced first and second end faces and an inner surface defining a longitudinally extending opening. A conductor extends within the opening and an insulator extends within the opening transversely intermediate the conductor and the inner surface of the body to insulate the conductor from the body. The body has at least one indentation formed longitudinally into at least one of the first and second end faces, with a portion of the inner surface of the body being displaced transversely against the insulator in correspondence with the at least one longitudinal indentation to crimp the insulator and conductor within the opening of the body and maintain a hermetic seal across the feedthrough device.Type: ApplicationFiled: February 27, 2014Publication date: October 23, 2014Inventors: Kristopher Bilek, Gregory J. Davidson, William C. Bushong
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Patent number: 7931981Abstract: The present invention relates to a high capacity electrochemical cell having a cathode containing an oxide of copper as an active material, as well as an anode, an electrolyte, and separators for use with the cathodes of the invention in an alkaline electrochemical cell.Type: GrantFiled: October 20, 2009Date of Patent: April 26, 2011Assignee: Rovcal Inc.Inventors: David Boone, William C. Bushong, Paul Cheeseman, Gregory J. Davidson, Mario Destephen, Zhihong Jin, Jon Luecke, Erik Mortensen, Ernest Ndzebet, Karthik Ramaswami, Sergiy V. Sazhin, Viet H. Vu
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Patent number: 7763384Abstract: The present invention relates to a high capacity electrochemical cell including an anode, a cathode, and a separator disposed between the anode and cathode. The anode is configured to operate in combination with a quantity of an oxide of copper in the cathode. The cell is capable of operating at a discharge voltage greater than 1.05 volts for at least an initial 5% of a cell discharge period at a current density of at least 5 mA/g, and can include a cathode active material that includes an oxide of copper.Type: GrantFiled: August 9, 2004Date of Patent: July 27, 2010Assignee: Rovcal, Inc.Inventors: David Boone, William C. Bushong, Paul Cheeseman, Gregory J Davidson, Mario Destephen, Zihong Jin, Jon Luecke, Erik Mortensen, Ernest Ndzebet, Karthik Ramaswami, Sergey Sazhin, Viet H. Vu
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Publication number: 20100112431Abstract: The present invention relates to a high capacity electrochemical cell having a cathode containing an oxide of copper as an active material, as well as an anode, an electrolyte, and separators for use with the cathodes of the invention in an alkaline electrochemical cell.Type: ApplicationFiled: October 20, 2009Publication date: May 6, 2010Applicant: Rovcal Inc.Inventors: David Boone, Wiliam C. Bushong, Paul Cheeseman, Gregory J. Davidson, Mario Destephen, Zihong Jin, Jon Luecke, Erik Mortensen, Ernest Ndzebet, Karthik Ramaswami, Sergey Sazhin, Viet H. Vu
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Patent number: 7645540Abstract: The present invention relates to a high capacity electrochemical cell having a cathode containing an oxide of copper as an active material, as well as an anode, an electrolyte, and separators for use with the cathodes of the invention in an alkaline electrochemical cell.Type: GrantFiled: August 9, 2004Date of Patent: January 12, 2010Assignee: Rovcal, Inc.Inventors: David Boone, William C. Bushong, Paul Cheeseman, Gregory J. Davidson, Mario Destephen, Zhihong Jin, Jon Luecke, Erik Mortensen, Ernest Ndzebet, Karthik Ramaswami, Sergey Sazhin, Viet H. Vu
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Publication number: 20090081497Abstract: The present disclosure generally relates to an on-demand hydrogen gas generation device, suitable for use in a fuel cell, which utilizes water electrolysis, and more particularly galvanic cell corrosion, and/or a chemical hydride reaction, to produce hydrogen gas. The present disclosure additionally relates to such a device that comprises a switching mechanism that has an electrical current passing therethrough and that repeatedly and reversibly moves between a first position and a second position when exposed to pressure differential resulting from hydrogen gas generation, in order to (1) alter the rate at which hydrogen gas is generated, such that hydrogen gas is generated on an as-needed basis for a fuel cell connected thereto, and/or (2) ensure a substantially constant flow of hydrogen gas is released therefrom.Type: ApplicationFiled: July 22, 2008Publication date: March 26, 2009Applicant: Rovcal, IncInventors: Viet Vu, Zhihong Jin, Juergen Scherer, Joseph L. Passaniti, Gregory J. Davidson, Craig Rom, Mario DeStephen, Jon Luecke, Erik Mortensen, Jamie L. Ostroha, Karthik Ramaswami, Tony Rubsam, William C. Bushong
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Publication number: 20090078568Abstract: The present disclosure generally relates to an on-demand hydrogen gas generation device, suitable for use in a fuel cell, which utilizes water electrolysis, and more particularly galvanic cell corrosion, and/or a chemical hydride reaction, to produce hydrogen gas. The present disclosure additionally relates to such a device that comprises a switching mechanism that has an electrical current passing therethrough and that repeatedly and reversibly moves between a first position and a second position when exposed to pressure differential resulting from hydrogen gas generation, in order to (1) alter the rate at which hydrogen gas is generated, such that hydrogen gas is generated on an as-needed basis for a fuel cell connected thereto, and/or (2) ensure a substantially constant flow of hydrogen gas is released therefrom.Type: ApplicationFiled: July 22, 2008Publication date: March 26, 2009Applicant: ROVCAL, INC.Inventors: Karthik Ramaswami, Zhihong Jin, Erik Mortensen, Gregory J. Davidson, Mario DeStephen, Joseph L. Passaniti, Jon Luecke, Jamie L. Ostroha, Tony Rubsam, Juergen Scherer, Viet Vu, William C. Bushong
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Publication number: 20090081501Abstract: The present disclosure generally relates to an on-demand hydrogen gas generation device, suitable for use in a fuel cell, which utilizes water electrolysis, and more particularly galvanic cell corrosion, and/or a chemical hydride reaction, to produce hydrogen gas. The present disclosure additionally relates to such a device that comprises a switching mechanism that has an electrical current passing therethrough and that repeatedly and reversibly moves between a first position and a second position when exposed to pressure differential resulting from hydrogen gas generation, in order to (1) alter the rate at which hydrogen gas is generated, such that hydrogen gas is generated on an as-needed basis for a fuel cell connected thereto, and/or (2) ensure a substantially constant flow of hydrogen gas is released therefrom.Type: ApplicationFiled: July 22, 2008Publication date: March 26, 2009Applicant: ROVCAL, INC.Inventors: Viet Vu, Zhihong Jin, Juergen Scherer, Joseph L. Passaniti, Gregory J. Davidson, Craig Rom, Mario DeStephen, Jon Luecke, Erik Mortensen, Jamie L. Ostroha, Karthik Ramaswami, Tony Rubsam, William C. Bushong
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Publication number: 20090042072Abstract: The present disclosure generally relates to an on-demand hydrogen gas generation device, suitable for use in a fuel cell, which utilizes water electrolysis, and more particularly galvanic cell corrosion, and/or a chemical hydride reaction, to produce hydrogen gas. The present disclosure additionally relates to such a device that comprises a switching mechanism that has an electrical current passing therethrough and that repeatedly and reversibly moves between a first position and a second position when exposed to pressure differential resulting from hydrogen gas generation, in order to (1) alter the rate at which hydrogen gas is generated, such that hydrogen gas is generated on an as-needed basis for a fuel cell connected thereto, and/or (2) ensure a substantially constant flow of hydrogen gas is released therefrom.Type: ApplicationFiled: July 22, 2008Publication date: February 12, 2009Applicant: Rovcal, Inc.Inventors: Viet Vu, Gregory J. Davidson, Craig Rom, William C. Bushong
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Publication number: 20080038634Abstract: An electrochemical cell is provided that includes a container, a cathode and anode disposed in the container, and a separator disposed between the anode and cathode. The cell further includes an extender either included in or separate from the cathode. An agent is further provided that interacts with soluble ionic species generated in the cathode to prevent the migration of the species to the anode.Type: ApplicationFiled: December 10, 2004Publication date: February 14, 2008Applicant: Rovcal, Inc.Inventors: William C. Bushong, Paul Cheeseman, Gregory J. Davidson, Zihong Jin, Erik Mortensen, Ernest Ndzebet, Karthik Ramaswami, Viet H. Vu
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Patent number: 7074516Abstract: An electrochemical cell is presented having a gasket that is sealed against the container to prevent electrolyte leakage during normal operation. When the internal pressure of the cell reaches a predetermined threshold, the seal is removed, thereby permitting electrolyte to escape through a vent.Type: GrantFiled: February 11, 2003Date of Patent: July 11, 2006Assignee: Rovcal, Inc.Inventors: Gregory J. Davidson, David R. Mihara
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Publication number: 20030152831Abstract: An electrochemical cell is presented having a gasket that is sealed against the container to prevent electrolyte leakage during normal operation. When the internal pressure of the cell reaches a predetermined threshold, the seal is removed, thereby permitting electrolyte to escape through a vent.Type: ApplicationFiled: February 11, 2003Publication date: August 14, 2003Inventors: Gregory J. Davidson, David R. Mihara
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Publication number: 20030044686Abstract: An electrochemical cell is presented having an improved separator disposed at the interface of the anode and cathode. In particular, the separator conforms to the contour of the electrode and is thinner than conventional separators made of non-woven fabric. The conformal separator may be formed from combinations of certain polymers and inorganic crosslinking agents.Type: ApplicationFiled: May 24, 2002Publication date: March 6, 2003Inventors: William C. Bushong, Stephanie R. Curtis, Gregory J. Davidson, David R. Mihara, Gregory S. Moy, Ernest Ndzebet, Michael J. Root, Viet H. Vu
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Patent number: 6010802Abstract: Collector assemblies and methods of making and using them, and electrochemical cells made with such current collector assemblies, are disclosed. The invention provides a current collector assembly which permits safe, effective venting of pressure in the cell; reduces early activation of venting structures in the current collector assembly; contains fewer piece parts than known structurally-robust current collectors; is easy to implement; and provides superior tolerance to outside impact forces. Current collectors of the invention provide a stiffer, more rigid washer, repositioned closer to the bottom plate at its central region while the washer maintains the traditional function of controlling positioning of the seal body of the current collector assembly.Type: GrantFiled: January 22, 1996Date of Patent: January 4, 2000Assignee: Rayovac CorporationInventors: Joseph L. Passaniti, Gregory J. Davidson, Kenneth H. Kenyon