TRAVEL DEVICE FOR SELF-PROPELLED DEVICE
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United States of America Patent
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Issued Date -
Jun 25, 2009
app pub date -
Jan 17, 2007
filing date -
May 17, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A traveling unit for a self-propelled apparatus, which is capable of detecting two different collision levels. The traveling unit includes: two running wheels rotatably supported by a frame; a motor that drives and rotates the two running wheels; and two tape switches that detect a collision of the frame with an obstacle. When the tape switch detects a small level of collision which is a first collision, the traveling unit performs an operation to avoid the obstacle. When the tape switch detects a second collision whose collision level is higher than the first collision, the traveling unit stops traveling.
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