PUSH-BUTTON DIAL ASSEMBLY FOR TELEPHONES

摘要

A push-button assembly in which a cluster of pushbuttons arranged in a circle or in a rectangular matrix, when depressed,engage a common plate positioned beneath the push-buttons. The plate is pivotally supported at its center by a spring which urges the plate towards the push-buttons. When any of the push-buttons is depressed it engages the plate at a point spaced from the central pivot. This causes the plate to tilt about its outer periphery, compressing the spring and actuating a common switch.