Pendant control device

Claim 1

A PENDANT CONTROL DEVICE COMPRISING A HOUSING; FOUR SPRING LOADED VALVES MOUNTED IN SAID HOUSING; AN ACTUATOR SHAFT MOUNTED IN SAID HOUSING FOR AXIAL AND ROTATIONAL MOVEMENT; MEANS FOR MAINTAINING SAID SHAFT IN A NEUTRAL AXIAL POSITION; A CAM ENGAGING ELEMENT ROTATABLY MOUNTED ON SAID SHAFT AND FIXED AGAINST AXIAL MOVEMENT WITH RESPECT THERETO; MEANS FOR PREVENTING ROTATION OF SAID CAM ENGAGING ELEMENT WITH RESPECT TO SAID HOUSING; A FIRST CAM MEMBER, PIVOTALLY MOUNTED IN SAID HOUSING, HAVING MEANS FOR ENGAGING AND UNSEATING A VALVE AND DISPOSED TO BE PIVOTED WHEN SAID SHAFT IS MOVED IN ONE DIRECTION FROM SAID NEUTRAL AXIAL POSITION; A SECOND CAM MEMBER, PIVOTALLY MOUNTED IN SAID HOUSING, HAVING MEANS FOR ACTUATING ANOTHER VALVE AND DISPOSED TO BE PIVOTED WHEN SAID SHAFT IS MOVED IN THE OTHER DIRECTION FROM SAID NEUTRAL AXIAL POSITION; A ROTARY CAM NONROTATABLY MOUNTED ON SAID SHAFT BY MEANS OF A SPLINE CONNECTION; TWO FOLLOWER ARMS EACH PIVOTALLY MOUNTED TO ENGAGE AND UNSEAT OTHER OF SAID VALVES; SAID ROTARY CAM HAVING CAM SURFACES ENGAGING SAID FOLLOWER ARMS ADAPTED TO PIVOT SELECTIVELY ONE OR THE OTHER OF SAID ARMS WHEN SAID SHAFT IS ROTATED IN ONE DIRECTION OR THE OTHER FROM A NEUTRAL ROTATIONAL POSITION; SAID CAM AND SHAFT BEING MAINTAINED IN SAID NEUTRAL ROTATIONAL POSITION BY THE ASSOCIATED SPRING LOADED VALVES ACTING THROUGH SAID ARMS; A DOG ON SAID CAM FOR ENGAGEMENT WITH SAID FOLLOWER ARMS TO LIMIT ROTATION OF SAID CAM AND SHAFT IN EITHER DIRECTION FROM SAID NEUTRAL ROTATIONAL POSITION; AND A CONTROL ROD CONNECTED TO SAID ACTUATOR SHAFT BY MEANS OF A UNIVERSAL JOINT TO PROVIDE AN EXTENSION OF SAID ACTUATOR SHAFT.