| 摘要 |
938,402. Holders for thermionic valves. SEALECTRO CORPORATION, and S. T. DEAKIN. Sept. 9, 1960 [Sept. 11, 1959], No. 31074/59. Class 38 (1). An electrical socket contact, for use with miniature valve holders, baseless lamps or transistors, is formed of a channel-shaped member of resilient metal 10, Fig. 2, e.g. goldplated, beryllium copper, part of the base of the channel being omitted and one or both of the adjacent side wall portions 12, being bowed inwardly to form resilient contact surfaces for engagement with an inserted wire or pin. Pin guiding and fixing projections 21 and 15, Fig. 2, are provided and alternative forms may be used (Figs. 1, 5, 14, 15, not shown). Fig. 12 shows the use of one set of fixing projections 15, 24, holding the contact in a plastic valve holder. Alternatively, the projections may dig into the side of the slot in the resilient material of the valveholder (Fig. 17, not shown), on the pin receiving end of the contact slot may be partly moulded over the contact after its insertion (Fig. 13, not shown). The contact base may be provided with a second hole (Fig. 1, not shown), for soldering purposes, or a soldering tag 28, Fig. 4, may be provided. The contacts can be formed from stamped strip 31, Fig. 7, the neck 34 being removed after the bending and plating of the strip and formation of the side walls 12. |
