Robotic cleaning device
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United States of America Patent
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Sep 21, 2021
Grant Date -
May 9, 2019
app pub date -
May 11, 2016
filing date -
May 11, 2016
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A robotic cleaning device having a main body, at least one drive wheel, at least one linking member rotationally coupled to the main body about a suspension axis and rotationally supporting the at least one drive wheel about a drive wheel axis such that at least a section of the main body can be raised from a lowered position, closer to the ground surface, to a raised position, further away from the ground surface. First and second spring members are arranged to provide a moment on the linking member about the suspension axis in the first direction to press the at least one drive wheel towards the ground surface. The moment provided by the first spring member is higher in the lowered position than in the raised position and the moment provided by the second spring member is higher in the raised position than in the lowered position.
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Family
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