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AssigneeDuracell Inc.
InventorsChristopher L. DePalma, William T. McHugh, Sean A. Sargeant, Marian Wiacek, Robert A. Yoppolo
Estimating the term…
An electrochemical cell having an on-cell tester for visually indicating the condition of the cell is provided with an electrically conductive metal ring pressed onto the negative terminal at the crimp seal end of the cell, to permit the tester lead to make an electrical contact with the negative terminal without shorting across the positive terminal of the cell. The ring has a cylindrical wall portion or gripping means which frictionally grips a corresponding mating cylindrical wall potion on the negative terminal and also has a flange portion adjacent the positive terminal. A layer of electrically insulating material disposed between the flange and positive terminal prevents electrical contact between the terminals. The tester lead is either permanently electrically connected to the ring or intermittently connected by the user, depending on the type of tester used.
An electrochemical cell having a positive and a negative terminal, an on-cell tester for visually indicating the condition of the cell, said tester having at least one lead, and an electrically conductive contact ring for making an electrical connection between said lead and one of said terminals on which said ring is mounted and electrically connected to, said ring having a flange disposed adjacent said other terminal, with electrical insulating means disposed between said ring and other terminal to prevent an electrical connection therebetween, and with said tester lead disposed adjacent said flange for making electrical contact thereto.
An electrochemical cell comprising a sealed, cylindrical metal container having a negative terminal at one end, a positive terminal, an on-cell tester for visually indicating the condition of the cell, and an electrically conductive contact ring for making an electrical connection between said lead of said tester and said negative terminal, wherein said metal container comprises said positive terminal and wherein said negative terminal comprises a disk shaped metal cap having a cylindrical wall portion electrically connected to, and in mating engagement with, gripping means of said contact ring, with said contact ring having a flange disposed adjacent said metal container at said negative terminal end of said cell and with electrical insulating means disposed between said ring and container to prevent an electrical connection therebetween, and wherein said tester lead is disposed adjacent said flange for making electrical contact thereto.
An electrochemical cell comprising a sealed, cylindrical metal container having a negative terminal at one end, a positive terminal, an on-cell tester for visually indicating the condition of the cell, and an electrically conductive contact ring for making an electrical connection between said lead of said tester and said negative terminal, wherein said metal container comprises said positive terminal and wherein said negative terminal comprises a disk shaped metal cap having a cylindrical wall portion electrically connected to, and in mating engagement with, gripping means of said contact ring, with said contact ring having a flange disposed adjacent said metal container at said negative terminal end of said cell and with electrical insulating means disposed between said ring and container to prevent an electrical connection therebetween, and wherein said tester lead is permanently electrically connected to said flange.
Dependencies are inferred from the claim text.