Abstract: A vacuum cleaner having a hose (13) which is connected to a vacuum cleaner housing, the outer end of the hose having a tube handle (12). The tube handle is connected to a nozzle (10) by a tube shaft (11). The tube shaft (11) is movable relative to the tube handle (12), and can be releasably locked in different positions. A device is conveniently provided to allow the operator to adjust the relative length of the tube shaft by moving the tube shaft relative to the tube handle.

Abstract: A vacuum cleaner nozzle having a first nozzle part (11) which has brush elements (23) or the like facing the floor and a second nozzle part (25) which is movably arranged with respect to the first part (11) and which has at least one suction opening (27) through which air flows to an outlet tube (13) connected to the nozzle. The second nozzle part (25) is supported by the first nozzle part (11) by means of a resilient element (31). The resilient element maintains the second part (25) above the floor when the nozzle is moved on a hard surface and allows the second part (25) to move toward the floor when the nozzle is moved on a soft surface, such as a soft carpet.

Abstract: A battery-operated surface treatment apparatus having a booster function, preferably a vacuum cleaner, comprises an electric motor (10) which drives a treatment unit, such as a suction fan. Further, the apparatus comprises a battery-powered power supply unit (11) for the motor and, in addition, the apparatus is provided with a coupling device (18,23) for the activation of the booster function by temporarily connecting a separate battery (14) in series with the batteries in the power supply unit (11).

Abstract: A portable suction cleaner comprises a housing (10) with a filter bag (11) and a suction fan (12) driven by a motor (13). The suction cleaner is characterized in that the housing (10) is provided with a carrier belt (19) adapted to be applied around the bearer's waist or hips.

Abstract: In a suction cleaner comprising a housing (10) having an inlet (11), a filter chamber (12) with a filter bag (13), a suction fan (14) with a motor (15), and an outlet passage (17) through which filtered air passes from the suction fan to an outet (16), the motor is provided with a control circuit (20) adapted to be activated by a first pressure switch (21) which is actuated by the underpressure in the filter chamber (12) in order to control the motor power at a predetermined level. According to the invention, the suction cleaner is provided with a second pressure switch (22) which is actuated by the pressure in the outlet (17) and adapted to activate the control circuit (20) when said pressure exceeds a predetermined level.

Abstract: In a suction cleaner comprising a housing (10) with a disposable filter bag (13) a movable tube piece (17) is provided which is adapted to enter the inlet opening (14a) of the filter bag. According to the invention, the tube piece (17) is provided with a control means actuatable by a pressure difference, preferably the difference between atmospheric pressure and the underpressure in the suction cleaner housing.

Abstract: Arrangement for winding of an electric cable which arrangement comprises a rotatable drum from which the cable is arranged to be wound off manually, and an electric motor (M) arranged to be connected to a first circuit for driving the drum in the winding direction and arranged to be rotated by the drum during unwinding of the cable. A second circuit (M,1,3,4) comprises besides the motor (M) also a contact means (1) arranged to be closed when the motor (M) is inoperative. During unwinding of the cable from the drum the motor generates a braking moment which increases with the speed of rotation of the motor.The second circuit preferably comprises a voltage dependent switch (3), preferably a Zener-diode, which is arranged to be closed when the voltage generated by the motor (M) during the unwinding exceeds a value corresponding to a predetermined speed of rotation of the drum and, as a consequence, of the motor.