PERFECCIONAMIENTOS EN DISCOS DE LLAMADA PARA APARATOS TELE- FONICOS

摘要

A dial unit for a telephone comprises a substantially flat plate (10) having a central bearing (12) which is adapted to support the dial shaft (14). On one side of the plate (10) is located a return spring (18) for the shaft (14) and on the other side is arranged a gear train through which the shaft drives a centrifugal governor (36). The dial unit includes a trigger (70) consisting of a one piece plastic moulding incorporating a resilient extension (74) which is adapted to contact a portion (76) of the plate (10) and act as a return spring.