Artificial respirator apparatus

Claim 1

A RESPIRATORY PUMPING UNIT HAVING A CONDUIT EXTENDING THEREFROM FOR CONNECTION WITH ARTIFICIAL RESPIRATORY APPARATUS AND COMPRISING: (1) A VALVE CASE HAVING A GENERALLY CYLINDRICAL CHAMBER, (2) AN AXIALLY-CENTERED SHAFT-MOUNTED VANE ARMS PROVIDED WITH SWEEP FACES IN THE CHAMBER DIVIDING THE CHAMBER INTO TWO COMPARTMENTS WITH THE SHAFT THEREOF EXTENDING THROUGH A WALL OF THE CASE, (3) A MOTOR-DRIVEN OSCILLATING MEANS CONNECTING WITH THE SHAFT AND BEING ADAPTED TO OSCILLATE THE SHAFT AND VANE CONNECTED THERETO THROUGH A SELECTED SWEEP-ARC OF MOVEMENT OF LESS THAN APPROXIMATELY 90* AND AT A FREQUENCY CORRESPONDING WITH A PERSON''S SELECTED BREATHING FREQUENCY. (4) A CONTINUOUS-FLOW AIR PUMP HAVING A SUCTION INTAKE BRANCH EXTENDING TO ONE COMPARTMENT OF THE VALVE CHAMBER AND THE PRESSURE DISCHARGE BRANCH EXTENDING TO THE OTHER COMPARTMENT OF THE VALVE CHAMBER. (5) A SUPPLY PORT IN THE VALVE COMMUNICATING FROM THE VALVE TO THE ATMOSPHERE AND BEING POSITIONED AT THE SIDE OF THE VALVE AND WITHIN THE SWEEP-ARC OF ONE ARM OF THE VANE, (6) AN OPERATING PORT IN THE VALVE SUBSTANTIALLY DIAMETRICALLY OPPOSITE TO THE SUPPLY PORT AND BEING WITHIN THE SWEEP OF THE OTHER ARM OF THE VANE AND COMMUNICATING FROM THE VALVE TO THE RESPIRATORY CONDUIT, AND, (7) WHEREIN THE OPENINGS OF THE SAID PORTS AT THE VALVE INTERIOR ARE SUBSTANTIALLY WIDER THAN THE SWEEP FACES OF THE VANE ARMS, WHEREBY TO OPEN THE PORTS TO BOTH COMPARTMENTS OF THE VALVE CHAMBER WHEN THE ARMS ARE MOVING ACROSS THE PORTS AND THEREBY PERMIT A CONTINUOUS AIR FLOW IN THE PUMP WHEN THE AIR FLOW IN THE CONDUIT CEASES AS WHEN REVERSING IN DIRECTION, AND THEREBY ELIMINATE PRESSURE AND INERTIAL EFFECTS IN CHANGING THE DIRECTION OF AIR FLOW IN THE CONDUIT.