transition portion having at least one conical zone for sealing against the mouths of the inflation valve bodies for inflation the opposite end of the hose is connected to the fan outlet of the vacuum cleaner while for evacuation it is connected to the fan inlet application_number US 75239976 A description referring now to the drawing there is illustrated an assembly of an upright vacuum cleaner 10 including a power plant 11 a flexible air hose 12 and a nozzle attachment 13 the illustrated vacuum cleaner 10 is of a known type used for residential cleaning and the like and having a removable rug nozzle illustrated for reference in phantom at 14 in fig1 the power plant 11 includes a motor generally indicated at 16 a fan housing 17 having an inlet 18 at a front face and an outlet 19 at one side the motor 16 includes a power shaft 21 extending through the housing 17 and directly driving a centrifugal fan 22 supported thereon within the housing a handle 23 is pivotally mounted on the upper side of the power plant 11 for pushing and steering of the cleaner 10 in the normal manner the flexible air hose 12 has one end fitted with a coupler 27 arranged to be releasably secured in substantially airtight relation to the inlet 18 or outlet 19 of the fan housing 17 u s pat no 3 279 828 issued in my name discloses a preferred form of the coupler 27 the hose 12 is formed of a flexible material preferably an elastomeric material with or without reinforcement the other end of the hose 12 is terminated with a rigid tubular fitting 28 of circular cross.