Rapid opening valve

Claim 1

A RAPID OPENING VALVE FOR RELEASING A FLUENT MATERIAL UNDER PRESSURE WITHIN A CONTAINER AT A CONTROLLABLE TIME COMPRISING: A VALVE HOUSING HAVING AN INLET PORT AND AN OUTLET PORT; SAID INLET PORT BEING SEALED TO SAID CONTAINER; A FLOATING VALVE SEAT WITHIN SAID HOUSING; A VALVE PISTON SUPPORTED IN SEALING RELATION WITH SAID VALVE SEAT; A PISTON ROD CONNECTED TO SAID PISTON; A FIRST PIVOT SUPPORT WITHIN SAID VALVE HOUSING; A FIRST TWO-BAR LINKAGE CONNECTED BETWEEN SAID PISTON ROD AND SAID FIRST PIVOT SUPPORT; A SECOND PIVOT SUPPORT WITHIN SAID VALVE HOUSING; MEANS, INCLUDING A SECOND TWO-BAR LINKAGE CONNECTED BETWEEN SAID FIRST TWO-BAR LINKAGE AND SAID SECOND PIVOT SUPPORT, FOR HOLDING SAID FIRST TWO-BAR LINKAGE, SAID PISTON ROD AND SAID FIRST PIVOT SUPPORT IN AN IN-LINE RELATION, TO THEREBY LOCK SAID PISTON AGAINST SAID VALVE SEAT; MEANS CONNECTED BETWEEN SAID SECOND TWO-BAR LINKAGE AND SAID SECOND PIVOT SUPPORT FOR NORMALLY HOLDING SAID SECOND TWO-BAR LINKAGE, SAID SECOND PIVOT SUPPORT AND THE CONNECTING POINT OF SAID FIRST AND SECOND TWO-BAR LINKAGES IN IN-LINE RELATION; A SOLENOID OPERATED MEANS FOR MOVING SAID SECOND TWO-BAR LINKAGE OUT OF ITS IN-LINE RELATION TO THEREBY MOVE THE FIRST TWO-BAR LINKAGE OUT OF ITS IN-LINE RELATION TO PERMIT RAPID OPENING OF SAID VALVE IN RESPONSE TO THE PRESSURE OF THE FLUENT MATERIAL WITHIN SAID CONTAINER; SAID SECOND TWO-BAR LINKAGE BEING FREE TO MOVE INDEPENDENTLY OF SAID SOLENOID OPERATED MEANS; MEANS FOR DECELERATING AND STOPPING SAID VALVE PISTON AND MEANS FOR RECLOSING THE VALVE WHEN THE INLET OUTLET PRESSURES ARE EQUALIZED.