Logging systems and method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Sep 29, 2015
Grant Date -
N/A
app pub date -
Jan 29, 2013
filing date -
Jan 29, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A skyline transfer apparatus is disclosed herein having in one embodiment a carriage. The carriage in one form comprising: at least one carriage side-plate; a plurality of skyline riding sheaves rotatably attached at near and outbound end of the carriage side-plate(s). The skyline riding sheaves ride upon a tensioned skyline during operation of the carriage. A mainline attachment point is provided at the outbound end of the carriage side-plate(s). A haul-back line attachment point is provided at the near end of the carriage side-plate(s); and a drop line extends below the carriage to support a load. A jack is also disclosed, pivotably attached to an intermediate spar. The intermediate spar supports the jack above a ground surface between a main yarder and a strongpoint. The jack comprises at least one side-plate(s) with at least one skyline supporting sheave rotatably attached to the side-plate(s).
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