each contact set returning to its original state only upon actuation of another of the operating members

Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch > having a plurality of operating members associated with different sets of contacts, e.g. keyboard > wherein the switch has means for limiting the number of operating members that can concurrently be in the actuated position > each contact set returning to its original state only upon actuation of another of the operating members

Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch (wherein the operating part is flexible H01H17/00) > having a plurality of operating members associated with different sets of contacts, e.g. keyboard (mounting together a plurality of independent switches H02B) > wherein the switch has means for limiting the number of operating members that can concurrently be in the actuated position > each contact set returning to its original state only upon actuation of another of the operating members