Abstract: A floor care disk for a floor care machine such as a floor polishing machine includes a floor care pad mounted on a drive plate. The drive plate includes a stiff disk element and tongue-like tabs connected flexibly to a radially outer portion or rim of the disk element, and extending radially inwardly toward a radially inner portion or hub of the disk element. The radially inner free ends of the tongue-like tabs are free to flexibly deflect away from the plane of the disk element. The pad is mounted on the tabs and on the radially outer portion of the disk element. During rotational operation of the floor care disk, due to the arising centrifugal force acting on the center of mass of the rotating pad and tongue-like tabs, the pad and the tongue-like tabs are flexibly deflected away from the disk element and toward the floor surface, thereby deflecting the pad into osculating contact with the floor surface.

Abstract: A filter bag arrangement for a vacuum cleaner includes a bag body of filter material, and a stiffening element in the form of a filter mounting plate with an inlet opening of the bag therein. The vacuum cleaner includes a housing defining a chamber into which the bag may be inserted, a lid to cover the chamber, and a filling pipe stub that is insertable into the inlet opening. Plural individual mounting elements are provided at the outer edge of the stiffening element and are inserted into corresponding individual receivers of the housing so as to spatially position and fix the inlet opening of the filter bag arrangement relative to the housing of the vacuum cleaner.

Abstract: A connection arrangement between a vacuum cleaner and a suction tool includes a pivot element pivotably connected to the suction tool and a rotation element rotatably coupled to the pivot element. A suction wand, hose, handle or other vacuum port of the vacuum cleaner is removably connected to a connection end of the rotation element. Coupling ends of the pivot and rotation elements are inserted one in the other, and respectively have circumferential grooves that form a circumferential channel therebetween. Plural partial ring segment elements are received in the circumferential channel to form a connection ring that rotatably secures the pivot and rotation elements. The ring segment elements are inserted into or removed from the channel through a selectively coverable opening in the rotation element or the pivot element. A catch cooperates with a detent to hold a vertically pivoted, rotationally centered rest position of the components.

Abstract: A housing for a hand held vacuum cleaner is so constructed that a suction motor mounting bracket which is enclosed by a lower housing section, is removably secured to an upper housing section. A suction coupling pipe section is either an integral part of or directly secured to the suction motor mounting bracket, so that forces introduced to a suction tool attached to the suction coupling pipe section are transmitted through the mounting bracket to the upper housing section thereby at least partly relieving the lower housing section from forces passing from the suction tool to the handle and vice versa.

Abstract: An exhaust filter unit is arranged outwardly surrounding at least a major portion of a housing of a vacuum cleaner. The dirt-laden incoming airflow is filtered through a primary filter, then blown by a suction motor unit into an annular exhaust air space between the vacuum cleaner housing and the exhaust filter unit. Thereby, the filtered air is exhausted in a diffused manner through the large surface area of the exhaust filter unit. Preferably, the exhaust filter unit has a cylindrical tubular configuration that completely externally surrounds a cylindrical portion of the vacuum cleaner housing.

Abstract: A brush roller accessory for a vacuum cleaner includes a main support roller and a power-driven brush roller rotatably arranged in a housing, and a spring-biased adjusting roller that adjustably protrudes from the housing to bear some of the total contact force of the accessory against a floor, to reduce or relieve the contact force exerted by the brush roller against the floor. The adjusting roller is rotatably mounted on a pivot lever, having a first end pivotally connected to the housing and a second end connected to a spring that biases the lever to pivot the adjusting roller outwardly from the housing. A rotary knob with several stop surfaces selects an upper limit on the pivot range of the lever and the adjustment height of the adjusting roller. A coupling link pivots the adjusting roller to a maximally protruding position to lift the brush roller into a parking position.

Abstract: A vacuum cleaner wand includes inner and outer relatively telescopable pipes, a cord magazine chamber on the outer pipe, a sheath tube connected to the inner pipe and slidably extending into the chamber, a slider guided slidably parallel to the sheath tube in the chamber, and a flexible electrical cord. The cord extends along inside the sheath tube, bends 180° as a fixed loop at an end of the sheath tube, extends back between the sheath tube and the slider, bends 180° as a movable loop through an opening in the slider, and extends between the slider and a sidewall of the chamber. Thereby the cord has an adjustable extended length corresponding to the selected telescoped length of the wand. The sliding sheath tube slides the cord, which in turn moves the slider, so that the cord remains kink-free.

Abstract: A floor care machine realized in the form of a floor polishing machine contains a driven pad, the height of which pad can be adjusted automatically to adjust the application pressure to take the characteristics of the floor into consideration. For this purpose, between the driving element and the driven element, there is a transmission element which forms a torque regulator. For this purpose, the driven element can be rotated with respect to the driving element opposite to the working direction of rotation and can also be displaced axially, whereby the transmission element with a clamping element automatically regulates the displacement and rotation, thereby acting as a torque regulator to regulate the height of the pad with respect to the floor as a function of the torque.

Abstract: To adjust a brush roller to the current operating conditions, a brush attachment to hold the brush roller and drive mechanism is realized in the form of an upper part and a separate inner part. The inner part is thereby mounted in the upper part so that the inner part can pivot by means of an axle, and the brush roller is pressed against the surface to be cleaned by means of a spring element. The inner part has a suction chamber for the brush roller, and has a rear floor strip, preferably of convex curvature, in the vicinity of the axle to create a seal. The front area is sealed by means of a floor strip on the brush attachment.

Abstract: On floor cleaning machines, and on vacuum cleaners in particular, there is a protective bumper to provide protection for the machine against impacts and to protect furniture and other objects. The bumper extends along at least a portion of a side wall in the circumferential direction of the protective bumper. The protective bumper is provided with a supporting body which is made of an elastic material or an elastically compressible material, and is provided in the vicinity of its dimension, or side, facing away from the side wall with a cover which is made of a flexible material. The protective bumper provides a large exhaust surface area, which large exhaust surface area is used for the discharge of the exhaust air. As a result of the exhaust of the air over a large area, the invention achieves both a good reduction of acoustical emissions and a good filtering action.

Abstract: A vacuum cleaner generally has a working head which is positioned on the floor surface when the machine is in use. The working head of a vacuum cleaner essentially includes a rotating brush, a suction blower and a motor for operating both the brush and the blower. In addition, this working head also generally requires a spacing device, such as a wheel for guiding the brush head or suction brush head and controlling its proper spacing in relation to the floor.

Abstract: A brush type vacuum cleaner having a filter housing and a suction, or brush-suction, head. The filter housing is pivotally connected to the brush-suction head by a rigid guide element or rigid connector that includes two air channels for channelling air between the filter housing and the brush-suction head. The air channels include openings for connection to the suction blower of the vacuum cleaner and the vacuum mouthpiece of the brush-suction head.

Abstract: In a floor cleaning machine with a driven brush roller, the invention specifies that the height of the brush roller can be adjusted automatically as a function of the torque. For this purpose, between the drive and the brush roller, a spring, which is tuned to the torque for the working phase, is employed as a coupling element. When deviations from the specified torque occur, actuating signals for an automatic height adjustment of the wheel are produced, until the specified torque of the brush roller is re-established.

Abstract: The invention relates to a vacuum cleaner having a removable or pivoting cover on the housing of the vacuum cleaner to hold a filter bag. In the cover, there is a sliding, adjustable guide element which holds a filter bag reinforcement plate having a filler opening. When the guide element is adjusted by an activating element, the reinforcement plate is locked with the cover by appropriate elements, and is engaged with its filler opening over a corresponding filler tube on the housing, so that the cover can be locked in the housing by the reinforcement plate.

Abstract: This invention relates to upright vacuum cleaners which have a detachable hand-held vacuum hose as an ascending line. The hand-held vacuum hose is coupled to a hand-held vacuum tube which serves as an extension. The hand-held vacuum tube is thereby designed as a storage housing for the telescoping hand-held vacuum hose.

Abstract: A protective device for floor cleaning apparatus with a rotating driving source and with brush rollers driven thereby comprises a housing 2 with a bottom wall on its side facing towards the floor. The bottom wall is provided with working apertures 9 for the brush rollers and with tooth-shaped carpet deflectors which project on the side on which the bristles of the brush rollers enter the housing from the bottom wall into the working apertures.