Suffocation inhibiting inhalator-exhalator valve

Claim 1

A COMPOSITE INHALATION-EXHALATION VALVE DEVICE WITH LOW PRESSURE PROTECTION COMPRISING A VALVE BODY HAVING A PASSAGE THERETHROUGH AND A SUPPLY CONNECTED THEREON FOR A SUPPLY HOSE IN COMMUNICATION WITH SAID PASSAGE. A SLEEVE WITHIN SAID PASSAGE AND MOVABLE AXIALLY RELATIVE TO THE PASSAGE, AND A FLEXIBLE CONNECTION BETWEEN THE EXTERIOR OF THE SLEEVE AND THE BODY, AN INHALATION VALVE PASSAGE TO ONE END OF THE SLEEVE FORMING A COMMUNICATION BETWEEN THE END OF THE PASSAGEWAY ADJACENT THE SUPPLY CONNECTION AND THE OPPOSITE END, SAID SLEEVE ON THE SUPPLY SIDE THEREOF HAVING A FIRST AREA RESPONSIVE TO PRESSURE IN THE SUPPLY PASSAGE OF A PREDETERMINED AMOUNT, AND AN INHALATION CHECK VALVE ELEMENT NORMALLY CLOSING SAID PASSAGE, A FIRST ANNULAR EXHALATION VALVE COMPONENT ON SAID BODY, EXHALATION PASSAGE MEANS FORMING AN EXHALATION PORT THROUGH THE BODY ADJACENT SAID EXHALATION VALVE COMPONENT, A SECOND EXHALATION VALVE COMPONENT MOUNTED ON THE SLEEVE, ONE OF SAID COMPONENTS COMPRISING AN EXHALATION VALVE ELEMENT AND THE OTHER OF SAID COMPONENTS COMPRISING AN EXHALATION VALVE SEAT, SAID EXHALATION VALVE SEAT AT THE LINE OF ENGAGEMENT WITH THE EXHALATION VALVE ELEMENT DEFINING A SECOND AREA RESPONSIVE TO EXHALATION PRESSURE, SAID SECOND AREA BEING OF LESSER AMOUNT THAN SAID FIRST AREA WHEREBY TO INCREASE THE EFFECTIVE TOTAL PRESSURE ON SAID FIRST AREA DURING THE INHALATION CYCLE THEREBY TO INHIBIT SUFFOCATION WHEN THE SUPPLY HOSE IS NO LONGER CAPABLE OF SUPPLYING THE VALVE DEVICE.