Failure modes for a jack
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United States of America Patent
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-
Apr 6, 1993
Grant Date -
N/A
app pub date -
Sep 14, 1992
filing date -
Sep 14, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Scissors jacks which are provided with channels which bend during overload conditions so as to indicate to the user that the jack has been overloaded. One embodiment an accordion structure is used and in the other two embodiments metal straps are used.
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