Linkage arrangement for operating a sheet accumulation barrier mechanism
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United States of America Patent
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Mar 22, 2011
Grant Date -
Jul 13, 2006
app pub date -
Jan 12, 2005
filing date -
Jan 12, 2005
priority date (Note) -
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Abstract
A linkage arrangement for handling sheets in a sheet accumulator including an accumulation gate and a locking over center mechanism. The accumulation gate pivotally mounts to a support structure of the accumulator and includes a stop surface for traversing the sheet path. The stop surface is movable between an interference position and a release position wherein the interference position inhibits the travel of sheets along the sheet path, and the release position releases the sheets for continued travel along the sheet path. The locking over center mechanism includes longitudinally aligned actuating and connecting arms. The actuating arm pivotally mounts to the support structure about a rotational axis while the connecting arm pivotally mounts to the accumulation gate at one end and pivotally mounts to the actuating arm at the other end. The locking over center mechanism inhibits motion of the accumulation gate in response to a force applied to the accumulation surface. In response to a moment load applied to the actuating arm, the locking over center mechanism releases the accumulation gate from the interference position to the release position.
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