Sealed ball valve

Claim 1

A SPHERICAL BALL VALVE COMPRISING, IN COMBINATION, A VALVE HOUSING, A SPHERICAL VALVE BALL IN SAID HOUSING, A PAIR OF VALVE SEATS IN SAID HOUSING ENGAGING SAID BALL, SAID HOUSING DEFINING TWO SEPARATE PASSAGES COMMUNICATING WITH THE RESPECTIVE VALVE SEATS, A RECIPROCABLE VALVE ACTUATING PLUNGER MOUNTED IN SAID HOUSING FOR RECTILINEAR MOVEMENT TOWARD AND AWAY FROM SAID BALL, ANCHORING MEANS COACTING WITH SAID PLUNGER TO HOLD THE LATTER AGAINST ROTATION, COACTING CAM AND FOLLOWER ELEMENTS RECIPROCABLE RELATIVE TO EACH OTHER, SAID CAM ELEMENT BEING SHAPED TO FORCE ROTATION OF SAID CAM AND FOLLOWER ELEMENTS RELATIVE TO EACH OTHER AS AN INCIDENT TO RECIPROCATION OF SAID ELEMENTS RELATIVE TO EACH OTHER, MEANS CONNECTING ONE OF SAID ELEMENTS TO SAID BALL TO ROTATE THE LATTER, MEANS CONNECTING THE OTHER OF SAID ELEMENTS NONROTATABLY TO SAID PLUNGER RECIPROCATION BY THE LATTER RELATIVE TO SAID ONE ELEMENT, VALVE OPERATING MEANS COACTING WITH SAID PLUNGER TO MOVE TO LATTER LONGITUDINALLY IN OPPOSITE DIRECTIONS TO ROTATE SAID BALL BETWEEN OPEN AND CLOSED POSITIONS THEREOF, A BELLOWS ENCIRCLING SAID PLUNGER BETWEEN SAID ANCHORING MEANS AND SAID SEATS AND ENCLOSING THE ELEMENT CONNECTED TO THE BALL FOR ROTATING THE SAME, MEANS FORMING AN IMPERVIOUS CIRCUMFERENTIAL JOINT BETWEEN ONE END OF SAID BELLOWS AND SAID HOUSING, AND MEANS FORMING AN IMPERVIOUS CIRCUMFERENTIAL JOINT BETWEEN THE OTHER END OF SAID BELLOWS AND SAID PLUNGER WHEREBY THE BELOWS PARTAKES OF THE RECTILINEAR MOVEMENT OF SAID PLUNGER.