Ventilator with air discharge means

Claim 1

A VENTILATOR COMPRISING FIRST AND SECOND SEMISPHERICALLY-SHAPED PARTS, THE FIRST PART OF WHICH TERMINATES IN AN OUTLET OPENING AND THE SECOND PART OF WHICH TERMINATES IN AN INLET OPENING, MEANS FOR CONNECTING THE ENLARGED END PORTIONS OF SAID PARTS TOGETHER TO FORM AN OUTER CASING, A STATIONARY INNER CASING HAVING A SUBSTANTIALLY SEMISPHERICALLY-SHAPED PORTION WHICH IS SPACED FROM THE OUTER CASING AND AN END PORTION WHICH IS ARRANGED IN SUBSTANTIALLY AXIAL ALIGNMENT WITH THE OUTLET END OF THE FIRST PART OF THE OUTER CASING, A MOTOR, MEANS ASSOCIATED WITH THE INNER CASING FOR SUPPORTING SAID MOTOR, AN IMPELLER HAVING A CENTRAL PORTION AND AN OUTWARDLY INCLINED BODY PORTION, A PLURALITY OF AIR DRIVING BLADES HAVING THEIR ROOT PORTION, SECURED TO THE OUTWARDLY INCLINED PORTIONS OF SAID IMPELLER AND LEADING EDGES ARRANGED IN CLOSE PROXIMITY TO THE INLET PORTION OF THE SECOND PART OF THE OUTER CASING, A PLURALITY OF AIR TURNING VANES ARRANGED BETWEEN AND CONNECTED TO THE OUTER CASING AND TO THE INNER CASING AND ARRANGED AT A SUBSTANTIAL DISTANCE FROM THE AIR DRIVING BLADES TO FORM A PLENUM CHAMBER BETWEEN THE INNER AND OUTER CASINGS AND THE AIR DRIVING BLADES AND THE AIR TURNING VANES, A SHAFT DRIVEN BY SAID MOTOR WHICH IS OPERATIVELY ASSOCIATED WITH SAID IMPELLER, A SUPPORT, AND FASTENING MEANS SECURED TO THE CONNECTING MEANS FOR THE ENLARGED PARTS OF THE OUTER CASING AND SAID SUPPORT FOR HOLDING THE VENTILATOR IN PLACE.