Conveying apparatus for ascending or descending stairways
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United States of America Patent
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Apr 22, 2003
Grant Date -
N/A
app pub date -
Dec 28, 2001
filing date -
Dec 28, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A conveying apparatus capable of ascending or descending stairways and carrying goods consists of a frame, a transmission mechanism and a driving mechanism located on a lower section of the frame. The transmission mechanism includes a planetary gear set and is with two degrees of freedom. When moving on the floor, the driving mechanism may drive a driving wheel in the transmission mechanism to deliver output of the conveying apparatus based on floor conditions, thereby to ascend or descend the stairways, or moving on the plain floor.
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