Interlock mechanism for an overhead trackway system
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United States of America Patent
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Jul 28, 1998
Grant Date -
N/A
app pub date -
Apr 16, 1997
filing date -
Apr 16, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
An interlock mechanism connects a movable trackway end-to-end to another trackway to allow rolling transfer of a crane trolley. The bridging trackway assembly is mounted on the movable trackway to be vertically movable to bridge a gap between the trackway ends. Blocking members prevent exit of a trolley from either trackway, which members are moved aside as the bridging trackway assembly descends. A secondary blocker prevents exit of a trolley if the lever system is operated when the trackway end is not positioned opposite the other trackway. Camming surfaces act to accurately align the ends as the bridging trackway assembly descends.
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