Quick chain tensioning system
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United States of America Patent
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Oct 8, 2019
Grant Date -
May 24, 2018
app pub date -
Nov 17, 2017
filing date -
Nov 22, 2016
priority date (Note) -
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Abstract
A quick tensioning system applicable to handheld chainsaws is provided wherein, during chain re-tensioning, the chain guiding bar remains firmly anchored to the bar holder and guiding means are provided to retract the motorized driving sprocket versus said guiding bar. The system includes a guide interposed between a stationary bar holding body and a motor body. This allows a linear or a rotation relative movement between the sliding driving sprocket and the stationary guiding bar. A drive is provided by means of a screw that an operator can easily operate via a knob conveniently mounted nearby the chainsaw handle.
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