Floor care appliance
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Aug 22, 2017
Issued Date -
N/A
app pub date -
May 5, 2015
filing date -
May 6, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A brush vacuum cleaner having a floor brush set with a driven brush roller having an overload protection. The brush set has at least one electric motor for a suction fan and for the drive of the brush roller, which includes a torque detecting unit. A safety shutdown is accomplished via a switch arrangement above an overload torque threshold. A driven element of the torque detection unit is disposed in the drive train which, above the torque threshold, is coupled via a switchable coupling element to an eddy current disk made of electrically conductive material. The eddy current disk has at least one magnet pivotably positioned on a fixedly mounted movable support. An adjustment of the support is made by a magnetic field of the coupled eddy current disk formed by the generated eddy current. The support controls a corresponding circuit arrangement such as a switching element as safety cut-off.
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Family
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