Abstract: Vacuum cleaner including a unit, comprising an electric motor and an associated suction fan, and a suction nozzle (36) connected to the inlet side of the unit via a dust separating device (15), either directly or via a connectable rigid conduit (13). The vacuum cleaner comprises a handheld unit (10) which when not in use is arranged to be positioned on a stationary storage unit (11), said handheld unit (10) incorporating the said unit and the dust separating device (15) and being provided with a coupling means (12) for connecting of the rigid conduit (13). For power supply purposes, by means of an extensible flex (26), the handheld unit (10) is connected to the storage unit (11) which via an additional flex (39) is connectable to a mains outlet.

Abstract: A vacuum cleaner having a suction nozzle and a dust bag (12) which is connected to the nozzle, for instance, by a tube connection, and a turbo-fan unit (27) driven by an electric motor and placed after the dust bag seen in the flow direction. The impeller (29) of the turbo-fan unit is driven at a speed above 50,000 rpm. A primary air stream created by the turbo-fan unit (27) leaves the unit via an outlet (30) to atmosphere. The vacuum cleaner also creates a secondary air stream which at least partially cools the electric motor (32) and which flows into the electric motor via one or several cooling air inlets (44) which are separated from the primary air stream. The secondary air stream can be created by a cooling fan which is separate or integral with the impeller, by a venturi-type nozzle, or by suction created by the impeller.

Abstract: An automatic control system for an absorption refrigerator in a vehicle, such as a recreational vehicle, which is connected to a motor-driven generator. The refrigerator is operated alternatively by either 110 A.C. voltage, 12 volt D.C. voltage, or by gas. If gas is only available, the refrigerator is automatically operated by that means, however, the ignition of the gas burner is prevented when the vehicle is stopped in a filling station and the generator ceases to operate. The arrangement has means which delays the closing of a circuit through a control system after another circuit, including a heating cartridge, has been interrupted.