Arch type strapping machine having an adjustable speed band tightening mechanism with dual speeds
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United States of America Patent
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Jul 29, 1997
Grant Date -
N/A
app pub date -
Nov 15, 1995
filing date -
Feb 14, 1995
priority date (Note) -
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status (Latency Note)
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Abstract
A roller unit for controlling band-feeding of an arch-type strapping machine, wherein the high-speed pulling back and strong tightening operations can be efficiently proceeded by reducing friction and impact force between a band and a return roller at the transition time between the high-speed pulling back and the strong tightening. The roller unit is so constructed that a return roller is driven via an one-way clutch, wherein a high-speed return roller of small torque and high speed return roller can be pushed to contact to the upper portion of the return roller and a return rocker roller can be pushed to contact to the lower portion of the return roller.
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