Vacuum cleaners

Claim 1

AN IMPROVEMENT IN VACUUM CLEANERS, COMPRISING, IN COMBINATION, A CASING INCLUDING, A FRONT SECTION HAVING AN INTAKE NOZZLE, A CENTER SECTION RELEASABLY INTERLOCKED WITH THE MATING END OF THE FRONT SECTION, A FILTER BAG ASSEMBLY HOUSED IN SAID CENTER SECTION AND IN COMMUNICATION WITH SAID NOZZLE, A PLURALITY OF SPACED ANCHORING LUGS ON THE INNER FACE OF THE CENTER SECTION AND HAVING THREADED BORES, A REAR SECTION CONNECTED WITH THE MATING END OF THE CENTER SECTION ADJACENT SAID LUGS AND HAVING AN EXPOSED EDGE, A TRANSVERSE WALL INTEGRAL WITH AND LOCATED INWARDLY OF SAID EXPOSED EDGE TO PROVIDE AN OUTWARDLY FACING FITTINGS HOUSING AND CONCEALING CAVITY, SAID TRANSVERSE WALL ALSO HAVING A RECESS ON ITS INNER FACE AND A TUBULAR SOCKET CONSTITUTING AN AIR EXHAUST, A COMBINED MOTOR AND PUMP UNIT HAVING A BOSS FOR ENTERING SAID RECESS, A CLAMPING PLATE LOCATED IN THE FRONT PORTION OF THE REAR SECTION AND HAVING OPENINGS, THE PERIPHERAL PORTION OF SAID PLATE SLIDABLY MOUNTED IN SAID SECTION, A PLURALITY OF BRACES FOR CAUSING THE SAID PLATE TO SEAT THE BOSS OF THE MOTOR AND PUMP UNIT IN SAID RECESS, SAID BRACES PIERCING SAID TRANSVERSE WALL AND HAVING THREADED END PORTIONS PASSING THROUGH SAID OPENINGS OF THE CLAMPING PLATE TO ENTER THE THREADED BORES OF SAID ANCHORING LUGS ON THE CENTER SECTION AND PROVIDED ON THEIR OUTER ENDS WITH TOOL ENGAGING ENDS ACCESSIBLE FROM SAID FITTINGS CAVITY, NUTS AND LOCK NUTS ON THE THREADED ENDS OF SAID BRACES BETWEEN THE ANCHORING MEMBERS AND THE CLAMPING PLATE, AND WASHERS BETWEEN THE NUTS AND SAID PLATE, WHEREBY, THE NUTS AND LOCK NUTS ON THE THREADED ENDS OF SAID BRACES MAY FREELY TURN WITH THE BRACES WITHOUT DISPLACING THE PLATE WHILE THE SAID THREADED ENDS ENTER THE BORES OF THE LOCKING LUGS.