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AssigneeThe Gillette Company
InventorsTae-Won Lee, Shuming Zeng, Kenneth R. Taylor, George Cintra, Philip D. Trainer, Alexander B. Shelekhin
Estimating the term…
An alkaline cell having an anode comprising zinc and a cathode comprising manganese dioxide wherein the cathode is located annularly along the inside surface of the cell housing and has a plurality of indentations on the inside of its surface facing the cell interior. Each indentation has a wall defining a channel with an opening thereto running preferably in the direction of the cell's length. The channel and opening facing the cell interior filled with anode material. The cell can have an anode current collector, typically of metal, with at least a portion of its surface extending into the cathode indentation channel. The anode current collector can have a portion of its surface extending from a point within the anode and into the cathode indentation channel through said opening. The cell can include a cathode current collector comprising a sheet of conductive material such as a sheet of metal or graphite placed within the cathode, particularly within thick regions of the cathode. The cathode current collector can be used. in conduction with a conventional single nail anode current collector or in combination with the extended surface anode current collectors of the invention. Such alkaline cells exhibit improved performance, particularly under high power application.
An alkaline cell having a cylindrical housing, an anode material comprising zinc and a cathode material comprising manganese dioxide, and an alkaline electrolyte, wherein the cathode is located annularly along a major portion of the length of the inside surface of the housing, wherein the cathode comprises an outer surface and an inside surface, the cathode outer surface contacting the housing and the cathode inside surface facing the cell's interior, wherein the cathode inside surface comprises at least one longitudinal surface indentation having an opening running in the direction of the cell's length, wherein said cell comprises a cathode current collector member residing within said cathode.
A cathode current collector for an alkaline cell wherein said alkaline cell comprises an anode comprising zinc and a cathode comprising manganese dioxide, and an alkaline electrolyte, said cathode current collector comprising an electrically conductive sheet for insertion into said cathode.
Dependencies are inferred from the claim text.