Integral vacuum pump and air compressor

Claim 1

AN INTEGRAL VACUUM PUMP/AIR COMPRESSOR APPARATUS COMPRISING IN COMBINATION: A DRIVE SHAFT; MOTOR MEANS FOR DRIVING SAID SHAFT; A FAN STRUCTURE MOUNTED ON SAID SHAFT FOR ROTATION THEREWITH; A SUPPORT STRUCTURE LOCATED ADJACENT SAID FAN STRUCTURE ON THE OPPOSITE SIDE OF SAID MOTOR MEANS, SAID SUPPORT STRUCTURE SECURED RELATIVE TO SAID MOTOR MEANS AND HAVING PORTIONS EXTENDING TOWARD AND GENERALLY SURROUNDING SAID DRIVE SHAFT TO FORM A HUB STRUCTURE THEREABOUT; A BEARING MEANS RETAINED IN POSITION BY SAID HUB STRUCTURE AND SUPPORTING SAID SHAFT IN DESIRED ALIGNMENT; A STATOR BODY FORMING A CYLINDRICAL CAVITY ABOUT SAID DRIVE SHAFT; SAID STATOR BODY POSITIONED ADJACENT AND SECURED RELATIVE TO SAID SUPPORT STRUCTURE OPPOSITE SAID FAN STRUCTURE AND MOTOR MEANS; A ROTOR STRUCTURE MOUNTED UPON SAID SHAFT FOR ROTATION THEREWITH WITHIN SAID CAVITY FORMED BY SAID BODY; AND AN END CAP STRUCTURE POSITIONED ON THE END OF SAID BODY OPPOSITE SAID SUPPORT STRUCTURE AND SECURED RELATIVE TO SAID SUPPORT STRUCTURE FOR ENCLOSING THE END OF SAID BODY; SAID DRIVE SHAFT HAVING AN OVER-HANGING END EXTENDING SUBSTANTIALLY THROUGH SAID ROTOR STRUCTURE AND CAVITY AND BEING UNSUPPORTED THEREAT; SAID SUPPORT STRUCTURE AND HUB HAVING A SEAL SUPPORT MEANS ADJACENT SAID ROTOR AND CAVITY AND A BEARING SUPORT PORTION SPACED AXIALLY THEREFROM TOWARD SAID MOTOR MEANS THEREBY SPACING SAID BEARING MEANS FROM SAID ROTOR AND CAVITY FOR HEAT ISOLATION PURPOSES; AND SAID FAN STRUCTURE WHEN ROTATED BY SAID DRIVE SHAFT DRAWING A CURRENT OF AIR INTO PROXIMITY WITH SAID HUB AND BEARING MEANS TO PROVIDE COOLING FOR THE SAME; SAID CAP STRUCTURE WHEN REMOVED AFFORDING AN UNOBSTRUCTED AND EASY SERVICE ACCESS TO SAID ROTOR STRUCTURE.