| 摘要 |
1,175,725. Dry cell having an insulating casing and a metallic outer casing. SOC. DES ACCUMULATEURS FIXES ET DE TRACTION. 18 May, 1967 [18 May, 1966], No. 23100/67. Addition to 1,069,015. Heading H1B. The invention is a modification of that described in Specification 1,069,015. A leakresistant cell has a cup-shaped electrode 1 having a metallic sealing cup 2 over its closed end; an insulating casing 3 envelopes the assembled cups, providing an opening at the open end thereof through which the rod-like central electrode 12 passes, and has a serrated end folded over the closed end of the cups; an outer metal casing 6 has a tubular portion 7 and an inwardly turned flange 8 pressing the serrations of the insulating casing against the assembled cups. In Specification 1,069,015 the tubular portion does not extend the full height of the cell, while in the present modification the end of the tubular portion 7 remote from the assembled cups is turned over the end of the insulative casing, and may be provided with a flange defining an opening through which the central electrode passes. This flange may comprise holes exposing the insulating casing, and the insulating casing may provide a collar round the terminal of the rod electrode insulating it from the outer metal casing. In Fig. 1 the cup electrode 1 is of zinc, the rod electrode 12 of carbon, the depolarizer 11 of MnO 2 , the casing 6 of aluminium, the cup 2 has an annular ridge 5 for making electrical contact, and the electrode 12 and depolarizer 11 rest in a cup 10 on an insulating disc 9. |
