Patents by Inventor Stuart M. Davis
Stuart M. Davis 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: 7546679Abstract: Apparatus and associated systems or methods include a linear machine with an elongate, axially-slidable core member (i.e., shaft). In one embodiment, the shaft includes at least one radial aperture to provide fluid (e.g., air) communication from an interior volume of a winding tube that contains one or more stationary windings, to either end of the shaft through a lumen that extends axially through the length of the shaft. The stationary windings are spaced apart to permit fluid to flow through a plurality of radial apertures in the winding tube. In particular, fluid circulation across the windings may provide sufficient cooling to increase the machine's maximum current rating. The fluid circulation may also provide pneumatic processing capabilities (e.g., vacuum hold, blow-off). In one exemplary embodiment, the apparatus may be used to insert tube-and-square paper separators into battery casings at high rates.Type: GrantFiled: April 25, 2006Date of Patent: June 16, 2009Assignee: The Gillette CompanyInventors: William D. Motherway, Stuart M. Davis
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Patent number: 7544435Abstract: Electrochemical cell systems are provided. In some implementations, the electrochemical cell system includes a fuel cell and a fuel cartridge connected to the fuel cell. The fuel cell includes (i) a fuel cell housing having a first external surface and a first internal surface defining a first internal volume of the fuel cell housing, and (ii) a cathode, an anode. and an electrolyte disposed within the first internal volume. The fuel cartridge includes (F) a cartridge housing having a second external surface and a second internal surface defining a second internal volume of the cartridge housing, wherein the second internal volume includes a fuel; and (ii) a fuel consuming agent disposed on at least one of the first external surface and the second external surface.Type: GrantFiled: May 15, 2003Date of Patent: June 9, 2009Assignee: The Gillette CompanyInventor: Stuart M. Davis
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Patent number: 7531271Abstract: A wafer alkaline cell of a laminar structure is disclosed. The cell has a pair of opposing sides comprising at least the majority of the boundary surface of said cell and defining a short cell dimension therebetween. The cell comprises an anode assembly and a cathode assembly bonded together to form a laminate structure. The cell comprises a single plastic frame or two separate plastic frames housing the anode and cathode material. The anode current collector may be precoated with a sealing metal forming an alkaline resistant metal oxide film to improve bonding to the frame. The anode assembly has an anode material therein typically comprising zinc and the cathode assembly has a cathode material therein typically comprising manganese dioxide. The cell is durable and preferably rigid, has elongated leak block paths, and resists electrolyte leakage.Type: GrantFiled: August 9, 2004Date of Patent: May 12, 2009Assignee: The Gillette CompanyInventors: Jonathan M. Boulton, Stuart M. Davis, George Cintra, Leslie Pinnell, Charles E. O'Brien
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Patent number: 7413828Abstract: A wafer alkaline cell of a laminar structure is disclosed. The cell has a pair of opposing sides comprising at least the majority of the boundary surface of said cell. The opposing sides define a short cell dimension therebetween. The cell comprises an anode assembly and a cathode assembly bonded together to form a laminate structure. The cell comprises a single frame or two separate frames housing the anode and cathode material. The anode assembly has an anode material therein typically comprising zinc and the cathode assembly has a cathode material therein typically comprising manganese dioxide. The cell is durable and preferably rigid, has elongated leak block paths, and resists electrolyte leakage.Type: GrantFiled: March 18, 2004Date of Patent: August 19, 2008Assignee: The Gillette CompanyInventors: Stuart M. Davis, Jonathan M. Boulton, George Cintra, Leslie Pinnell, Charles E. O'Brien
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Patent number: 7169497Abstract: An electrochemical cell includes a hydrogen generator and a hydrogen fuel cell.Type: GrantFiled: May 15, 2003Date of Patent: January 30, 2007Assignee: The Gillette CompanyInventors: Stuart M. Davis, Klaus Brandt
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Patent number: 7160647Abstract: Batteries are disclosed. In some embodiments, a battery has a cathode that includes CuxMyOzXt, where M is a metal, X includes one or more halides and/or nitrate, x+y is from about 6.8 to about 7.2, and z and t are selected so that the copper in CuxMyOzXt has a formal oxidation state of +2 or greater.Type: GrantFiled: December 22, 2003Date of Patent: January 9, 2007Assignee: The Gillette CompanyInventors: Cahit Eylem, Nikolay Iltchev, Stuart M. Davis, Ou Mao
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Patent number: 7049030Abstract: Batteries and methods of making batteries are disclosed. In some embodiments, a battery includes a housing, a positive electrode comprising a copper material in the housing, a negative electrode in the housing, a separator between the positive electrode and the negative electrode, and an electrolytic solution comprising soluble aluminum in the housing. A method of making a battery can include providing a positive electrode comprising a copper material into a housing, adding a material comprising aluminum to an electrolytic solution, and adding the electrolytic solution into the housing.Type: GrantFiled: March 6, 2003Date of Patent: May 23, 2006Assignee: The Gillette CompanyInventors: Cahit Eylem, Ou Mao, Stuart M. Davis
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Patent number: 7045247Abstract: A cathode having a groove extending about 10 to about 450 microns into a surface of the cathode. The cathode can also be roughened.Type: GrantFiled: August 24, 2000Date of Patent: May 16, 2006Assignee: The Gillette CompanyInventors: Terry Copeland, Stuart M. Davis, Tae-Won Lee, Alexander A. Leef, Gary A. Miller, Shuming Zeng
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Patent number: 6939528Abstract: Particulate MnO2, having simultaneously a micropore surface area greater than 8.0 m2/g, desirably between about 8.0 and 13 m2/g and BET surface area of between about 20 and 31 m2/g within the context of an MnO2 having a total intraparticle porosity of between about 0.035 cm3/g and 0.06 cm3/g produces enhanced performance when employed as cathode active material in an electrochemical cell, particularly an alkaline cell. The average pore radius of the meso and macro pores within the MnO2 (meso-macro pore radius) is desirably greater than 32 Angstrom.Type: GrantFiled: November 28, 2003Date of Patent: September 6, 2005Assignee: The Gillette CompanyInventors: Stuart M. Davis, William L. Bowden, Peter R. Moses, Thomas C. Richards
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Patent number: 6868610Abstract: Shaving razors and cartridges are provided that impart warmth to a user's skin during shaving. The razors and cartridges include a phase change material.Type: GrantFiled: November 15, 2001Date of Patent: March 22, 2005Assignee: The Gillette CompanyInventors: Klaus Brandt, Stuart M. Davis, Kenneth T. Dodd, Charles Robert Parent, Andrew Szczepanowski, Douglas J. Woodnorth
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Patent number: 6863876Abstract: Particulate MnO2, having simultaneously a micropore surface area greater than 8.0 m2/g, desirably between about 8.0 and 13 m2/g and BET surface area of between about 20 and 31 m2/g within the context of an MnO2 having a total intraparticle porosity of between about 0.035 cm3/g and 0.06 cm3/g produces enhanced performance when employed as cathode active material in an electrochemical cell, particularly an alkaline cell. The average pore radius of the meso and macro pores within the MnO2 (meso-macro pore radius) is desirably greater than 32 Angstrom.Type: GrantFiled: March 8, 2002Date of Patent: March 8, 2005Assignee: The Gillette CompanyInventors: Stuart M. Davis, William L. Bowden, Peter R. Moses, Thomas C. Richards
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Publication number: 20040229090Abstract: An electrochemical cell includes a hydrogen generator and a hydrogen fuel cell.Type: ApplicationFiled: May 15, 2003Publication date: November 18, 2004Inventors: Stuart M. Davis, Klaus Brandt
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Publication number: 20040229101Abstract: A fuel cell, cartridge, and/or container includes a fuel consuming agent.Type: ApplicationFiled: May 15, 2003Publication date: November 18, 2004Inventor: Stuart M. Davis
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Publication number: 20040175613Abstract: Batteries and methods of making batteries are disclosed. In some embodiments, a battery includes a housing, a positive electrode comprising a copper material in the housing, a negative electrode in the housing, a separator between the positive electrode and the negative electrode, and an electrolytic solution comprising soluble aluminum in the housing. A method of making a battery can include providing a positive electrode comprising a copper material into a housing, adding a material comprising aluminum to an electrolytic solution, and adding the electrolytic solution into the housing.Type: ApplicationFiled: March 6, 2003Publication date: September 9, 2004Inventors: Cahit Eylem, Ou Mao, Stuart M. Davis
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Publication number: 20040109822Abstract: Particulate MnO2, having simultaneously a micropore surface area greater than 8.0 m2/g, desirably between about 8.0 and 13 m2/g and BET surface area of between about 20 and 31 m2/g within the context of an MnO2 having a total intraparticle porosity of between about 0.035 cm3/g and 0.06 cm3/g produces enhanced performance when employed as cathode active material in an electrochemical cell, particularly an alkaline cell. The average pore radius of the meso and macro pores within the MnO2 (meso-macro pore radius) is desirably greater than 32 Angstrom.Type: ApplicationFiled: November 28, 2003Publication date: June 10, 2004Inventors: Stuart M. Davis, William L. Bowden, Peter R. Moses, Thomas C. Richards
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Patent number: 6740451Abstract: An alkaline battery includes a cathode including a gold salt, an anode including zinc, a separator between the cathode and the anode, and an alkaline electrolyte.Type: GrantFiled: December 20, 2001Date of Patent: May 25, 2004Assignee: The Gillette CompanyInventors: Paul A. Christian, Stuart M. Davis, Tatjana Mezini
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Publication number: 20030170170Abstract: Particulate MnO2, having simultaneously a micropore surface area greater than 8.0 m2/g, desirably between about 8.0 and 13 m2/g and BET surface area of between about 20 and 31 m2/g within the context of an MnO2 having a total intraparticle porosity of between about 0.035 cm3/g and 0.06 cm3/g produces enhanced performance when employed as cathode active material in an electrochemical cell, particularly an alkaline cell. The average pore radius of the meso and macro pores within the MnO2 (meso-macro pore radius) is desirably greater than 32 Angstrom.Type: ApplicationFiled: March 8, 2002Publication date: September 11, 2003Inventors: Stuart M. Davis, William L. Bowden, Peter R. Moses, Thomas C. Richards
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Publication number: 20030134199Abstract: An alkaline battery includes a cathode including a gold salt, an anode including zinc, a separator between the cathode and the anode, and an alkaline electrolyte.Type: ApplicationFiled: December 20, 2001Publication date: July 17, 2003Inventors: Paul A. Christian, Stuart M. Davis, Tatjana Mezini
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Patent number: 6585881Abstract: A process for manufacture of manganese dioxide comprising subjecting an aqueous bath comprising manganese sulfate (MnSO4) and sulfuric acid (H2SO4) to electrolysis in a closed cell wherein the electrolysis bath is maintained at an elevated temperature above 110° C., preferably above 115° C. and at superatmospheric pressure. Desirably the bath can be maintained at an elevated temperature between about 115° C. and 155° C. The electrolysis is carried out preferably at elevated current density of between about 12.5 and 37 Amp/sq. ft (135 and 400 Amp/sq. meter) which allows for smaller or fewer electrolysis units. An MnO2 product having a specific surface area (SSA) within desired range of between 18-45 m2/g can be obtained. A doping agent, preferably a soluble titanium dopant is employed to help obtain the desired specific surface area (SSA) of the MnO2 product. The manganese dioxide product in zinc/MnO2 alkaline cells gives excellent service life, particularly in high power application.Type: GrantFiled: February 20, 2001Date of Patent: July 1, 2003Assignee: The Gillette CompanyInventors: Stuart M. Davis, Peter R. Moses, Gary Miller
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Publication number: 20030088984Abstract: Shaving razors and cartridges are provided that impart warmth to a user's skin during shaving. The razors and cartridges include a phase change material.Type: ApplicationFiled: November 15, 2001Publication date: May 15, 2003Inventors: Klaus Brandt, Stuart M. Davis, Kenneth T. Dodd, Charles Robert Parent, Andrew Szczepanowski, Douglas J. Woodnorth