Snap-in sealing and insulating member for galvanic cells

H - Electricity – 01 – M

Patent

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319/109, 319/39

H01M 2/00 (2006.01) H01M 2/04 (2006.01) H01M 2/12 (2006.01) H01M 6/00 (2006.01)

Patent

CA 1179730

SNAP-IN SEALING AND INSULATING MEMBER FOR GALVANIC CELLS ABSTRACT OF THE DISCLOSURE In a sealed galvanic seal having an anode, a cathode, and a cylindrical can into which the principal components of the cell are assembled, a sealing and insulating member is provided at the top end of the cathode can, and is held in sealing relationship to the can by a crimp formed over the top edge thereof. The sealing and insulating member is formed with an upper portion having a diameter which is substantially the same as the inside diameter of the can in the region above the bead, and has an inwardly directed shoulder in the periphery of the member to a diameter which is substantially the same or slightly less than the diameter of the can at the bead. Below the shoulder, there is a downwardly and outwardly extending skirt formed in the lower portion of the sealing and insulating member, the maximum diameter of which is located substantially at the lowest extremity thereof, and which is greater than the diameter of the can at the bead. The sealing and insulating member may be snap-fitted into the can prior to crimping, and held in place without the necessity to pre-crimp. Moreover, by such an assembly, there is a greater internal volume provided in the cathode can. File No. PAT2018

405244

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