Stair-climbing crawler transporter
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United States of America Patent
Stats
-
Oct 14, 1997
Grant Date -
N/A
app pub date -
Aug 16, 1995
filing date -
Aug 24, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A stair-climbing crawler transporter having a pair of belt supporting units contacting with an inner surface of the belt crawler at a ground contacting section between driving wheels and grounding wheels on both sides, and a jack connected to a bent connecting portion of the belt supporting unit. The belt supporting units are straightly supported by extending a piston rod of the jack on the way of stairs and are bent to form an inverted 'V' by retracting the piston rod of the jack when the substantially intermediate portion of the ground contacting section contacts with a corner of the top step of stairs. Thus, the stair-climbing crawler transporter can smoothly ascend and descend stairs without tilting largely.
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Cited Art Landscape
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