Step mechanism of transport device
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United States of America Patent
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-
Dec 8, 2009
Grant Date -
Oct 29, 2009
app pub date -
Mar 13, 2006
filing date -
Apr 4, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A transport device includes a plurality of endlessly connected steps (1) so that these steps (1) circulate. One or more of the plurality of steps (1) have one or more weights (11) detachably attached thereto. These weights (11) are contained in the space surrounded by a tread (2), a riser (4), and a yoke (3) that form each of the steps (1), and supported on the rear surface of the tread (2) in a row by a channel member (12) of U-shape in cross section.
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