Extension trestle ladder
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United States of America Patent
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-
Dec 23, 1980
Grant Date -
N/A
app pub date -
Dec 11, 1978
filing date -
Dec 11, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for automatically locking the fly assembly of an extension trestle ladder in an extended or lowered adjustment position. The fly assembly is supported to prevent downward movement by a displaceable member which abuts a rung on the fly assembly along a portion of the length of the rung, which member is spring biased for automatic return to locking position.
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