Push-button switch

Claim 1

A PUSH-BUTTON SWITCH COMPRISING A BASE PLATE, A PLURALITY OF PUSH RODS LOCATED AT PREDETERMINED RADIAL DISTANCES FROM A COMMON RADIAL CENTER, A PLURALITY OF ELECTRICAL CIRCUIT OPENING-AND-CLOSING ELEMENTS RADIALLY POSITIONED ON SAID BASE PLATE, A TOP PLATE SPACED FROM SAID BASE PLATE AND FIXEDLY POSITIONED WITH RESPECT THERETO, SAID TOP PLATE DEFINING A PLURALITY OF RADIALLY POSITIONED APERTURES, SAID PUSH RODS RECIPROCALLY MOVABLE THROUGH SAID RADIAL APERTURES IN SAID TOP PLATE TO ACTUATE SAID CIRCUIT OPENING-AND-CLOSING ELEMENTS, A PIN PROJECTING FROM EACH PUSH ROD TOWARD THE RADIAL CENTER OF SAID PUSH RODS, A CENTRAL INNER CLOUMN AT THE RADIAL CENTER OF SAID PUSH RODS EXTENDING FROM SAID TOP PLATE TOWARD SAID BASE PLATE, AND A PLURALITY OF CYLINDRICAL SLIDES OF SUCCESSIVELY LARGER DIAMETERS HAVING PORTIONS EXTENDING RADIALLY TO SAID CENTRAL INNER COLUMN SO AS TO BE GUIDED FROM ROTATION BY SAID CENTRAL INNER COLUMN THEREBY TO CONTROL THE FRICTION BETWEEN SAID SLIDES AND BETWEEN THE SLIDES AND SAID COLUMN, SAID SLIDES HAVING A PLURALITY OF WORKING SURFACES DIAGONAL TO THE DIRECTION OF MOVEMENT OF SAID PUSH RODS, SAID WORKING SURFACES IN SAID SLIDES FORMING A PLURALITY OF GROUPS IN REGISTRATION WITH EACH GROUP HAVING A PUSH ROD PIN EXTENDING THERETHROUGH AND ENGAGEABLE WITH SAID DIAGONAL SURFACES WHEREBY SAID DIAGONAL SURFACES SELECTIVELY CONTROL THE MOTION OF SAID PUSH RODS TO FORM AN INTERLOCK PREVENTING MORE THAN ONE OF SAID PUSH RODS AT A TIME FORM BEING POSITIONED AT THE LIMIT OF ITS MOVEMENT IN THE DIRECTION OF SAID BASE PLATE.