| 摘要 |
1,236,495. Battery terminals. SEMPERIT A.G. 23 Oct., 1969 [25 Oct., 1968], No. 51957/69. Heading H1B. The lead terminal of a secondary cell comprises a shell having one or more circumferential ribs on its outside, at least one rib being thinner at its base than at its apex. As shown in Fig. 4 the shell 1 carries two circumferential ribs 2<SP>1</SP>, 4 having a reversed taper and forming a dovetail joint with the cell cover 7 which is injection moulded around the terminal. Shrinkage of the material, e.g. hard rubber, of the cover forces the material in the dovetail against the ribs forming a tight seal. In other embodiments the lower rib 2 is untapered and braced by fillets to the shell (Fig. 2, not shown), and the shell is curved outwardly between the ribs so that after the cover shrinks it springs back against it (Fig. 5, not shown). The terminals are made by casting with the taper of the ribs on the outside (Fig. 3) and bending the tapered ribs inwardly to the position shown in Fig. 4. |
