Clickless listening and ringing key

Claim 1

A SWITCH COMPRISING A FRAME, A MEMBER ROTATABLE ABOUT A GIVEN AXIS ON SAID FRAME, SAID MEMBER INCLUDING FIRST AND SECOND ROLLER PINS JUXTAPOSITIONED THEREON AT A GIVEN RADIAL DISTANCE FROM SAID GIVEN AXIS, THE LONGITUDINAL AXIS OF SAID FIRST AND SECOND PINS BEING SUBSTANTIALLY PARALLEL TO SAID GIVEN AXIS, FIRST AND SECOND ROLLERS EACH HAVING A DISTAL END AND A PROXIMAL END SUBSTANTIALLY PERPENDICULAR TO THE LONGITUDINAL AXIS THEREOF, END OF SAID FIRST AND SECOND ROLLERS HAVING AN AXIAL BORE ON SAID PROXIMAL END THEREOF FOR ROTATABLY MOUNTING SAID FIRST AND SECOND ROLLERS ON SAID FIRST AND SECOND ROLLER PINS, RESPECTIVELY, RESILIENTLY SECURED DETENT MEANS INCLUDING A DETENT POSITIONED IN THE SPACE BETWEEN SAID FIRST AND SECOND ROLLERS WHEN SAID MEMBER HAS A GIVEN NEUTRAL POSITION, AT LEAST ONE OF SAID FIRST AND SECOND ROLLERS HAVING AN INDENTED SURFACE ON SAID DISTAL END THEREOF, SAID DETENT BEING POSITIONED TO COME INTO POSITIVE ENGAGEMENT WITH SAID INDENTED SURFACE ON SAID DISTAL END OF SAID ONE END ROLLER IN RESPONSE TO SAID MEMBER ROTATING THROUGH A FIRST GIVEN ANGLE IN A FIRST DIRECTION FROM ITS NEUTRAL POSITION, FIRST AND SECOND SPRING CONTACTS, SAID FIRST SPRING CONTACTS BEING POSITIONED ON SAID FRAME TO BE ACTUATED BY SAID SECOND ROLLER IN RESPONSE TO SAID MEMBER BEING ROTATED THROUGH SAID FIRST GIVEN ANGLE AND SAID SECOND SPRING CONTACTS BEING POSITIONED TO BE ACTUATED BY SAID FIRST ROLLER IN RESPONSE TO SAID MEMBER BEING ROTATED THROUGH A SECOND GIVEN ANGLE.