Progress-elektrogerate Mauz & Pfeiffer Gmbh & Co.

Progress-electrogerate Mauz & Pfeiffer Gmbh & Co.

Robert Maier

Gernot Jacob

Gunter R Kullik

Werner Durr

A motor driven cylindrical brush for a cleaning apparatus. The brush has bristles which lie in the zone outside a bearing section provided with a contact surface for a drive belt. Between the bristle filling and the bearing section, the brush member has recessed annular grooves. Via these grooves, it is possible to compensate for length changes of the brush member. These length changes occur when the brush filling is anchored in the brush member. By compensating for these length changes, the brush is very smooth running, and minimum bearing loading occurs.

Motor driven cylindrical brush for a cleaning apparatus

A vacuum cleaner with constant air flow for household and industrial purposes. The vacuum cleaner includes a suction fan driven by an electric motor. An air flow measuring device is arranged in the working air flow of the suction fan, and has an electrical output signal proportional to the air flow. This electrical output signal is conveyed to a regulating and control circuit which adjusts the working air flow to a predetermined value as a function of the output signal.

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Nufringen, Germany

Robert Maier