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 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: The problem with suction lines on vacuum cleaners is that the connected vacuum hose must be lifted during when the suction pipe is rotated. To eliminate this problem, the invention teaches that an elbow is interposed between the suction pipe and the suction hose which is mounted by means of a rotating knuckle, as a result of which the suction hose can be adjusted as required, and the suction pipe can be ergonomically manipulated by means of an angled gripping area of the handle.

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: An ion conductor/electrolyte especially suitable for lithium batteries is comprised of a chemically inert, electronically nonconducting solid powder and an electrolyte salt solution with an aprotic solvent. The ion conductor has a solid to pasty consistency depending upon the ratio of the mixture's components and has a specific conductivity (.kappa.) of a magnitude >10.sup.-3 S/cm at room temperature. Using this ion conductor, solid batteries can be developed with output capacities similar to those previously available only in connection with liquid organic electrolyte systems. Among others, SiO.sub.2, Al.sub.2 O.sub.3 and TiO.sub.2 are favorable solids as carriers, especially with extensive surface areas. The liquid phase, which is immobilized by adsorption on these carriers, is formed of a solution of lithium or sodium salts in propylene carbonate, acetonitrile, gamma-butyrolactone, nitromethane, tetrahydrofuran and dimethoxyethane, or similar solvents.

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.

Abstract: A safety clutch for the drive of floor cleaning machines comprises at least one first dog and at least one second dog which are in engagement with one another and oppose each other and the input and output for transmitting torque. One of the dogs is arranged axially resilient so that it upon exceeding a predetermined torque is capable of being brought from the engagement into the disengagement position and vice versa by an axial force thereby resulting.

Abstract: A drive mechanism, particularly for household appliances, includes a driving element, a driven element and a frictional clutch coupling for frictionally transmitting motion between these two elements. The coupling includes a dished spring fixedly connected to one of these elements and frictionally engaging the other of these elements, whereby normally transmit motion between these elements. The spring is of a material which deforms upon heating so that relative motion between these elements resulting in frictional heating of the dished spring causes the same to deform out of engagement with the other element and thereby interrupt the transmission of motion between the elements.

Abstract: A stalk vacuum cleaner having a casing and an air-suction socket at the lower end portion of the casing, wherein the dirt is fed from the top to a dust bag arranged in the upper end portion of the casing of the stalk vacuum cleaner under the action of a suction system arranged at the lower end portion of the casing of the stalk vacuum cleaner by means of a riser tube. The riser tube is in the form of a movable hose constituting a fixed component of the casing of the vacuum cleaner. The lower end of the hose is detachably connected to the air-suction socket.

Abstract: A cleaning device includes a housing which bounds an internal space, and an electric motor and bearings for the shaft of the rotor of the electric motor are accommodated in such space. A blower element shares in the rotation of the shaft and advances air from the exterior of the housing through the space and back to the exterior. A partitioning wall subdivides the space into separate compartments one of which accommodates the electric motor, the other compartment accommodating one of the bearings. The blower element advances the air through both of such compartments to cool the electromotor, on the one hand, and the bearing, on the other hand, independently of one another. The partitioning wall may be provided with an opening which admits a branched-off portion of the air from one compartment toward a commutator accommodated in the other compartment downstream of the electric motor.