| 摘要 |
A CLEANING APPLIANCE (1) COMPRISES DIRT AND DUST SEPARATING MEANS (8), A MOTOR (6) ARRANGED TO DRIVE A FAN (5) FOR GENERATING SUCTION AIR FLOW, A SELECTIVELY-OPERABLE SWITCH (23) FOR ENERGIZING THE MOTOR AND A CLEANER HEAD (13). THE CLEANER HEAD HAS A DRIVEABLE AGITATOR IN THE FORM OF A BRUSH BAR (15) AND A DEDICATED MOTOR (18). WHEN THE MAIN VACUUM MOTOR (6) IS SWITCHED ON, THE BRUSH BAR MOTOR (18) IS ENERGIZED SO THAT THE BRUSH BAR IS AUTOMATICALLY DRIVEN ON START-UP OF THE CLEANER. THIS ENABLES THE SUPERIOR CLEANING PERFORMANCE ACHIEVABLE WITH A BRUSH BAR TO BE AUTOMATICALLY ACHIEVED, WITHOUT THE USER HAVING TO REMEMBER TO SELECT OPERATION OF THE BRUSH BAR.
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