Two-position ladder
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United States of America Patent
Stats
-
Jul 11, 1989
Grant Date -
N/A
app pub date -
Nov 21, 1988
filing date -
Nov 21, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pipe track has a groove in which a ladder is slidably mounted for movement between ends of the track. A pair of spaced, downwardly extending notches at one end of the groove permit the ladder to be pivoted downwardly to occupy a vertical position coplanar with the track; and a pair of spaced, upwardly extending notches at the other end of the groove permit the ladder to be pivoted upwardly to occupy a vertical position coplanar with the track.
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Cited Art Landscape
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