Delimbing apparatus
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United States of America Patent
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Sep 23, 2003
Grant Date -
N/A
app pub date -
Aug 3, 2001
filing date -
Dec 21, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a delimbing apparatus for processing elongated pieces, particular tree trunks (S), which apparatus (1) comprises a frame structure (2) to be suspended at the end of a boom assembly in a working machine, at least one means, articulated in relation to said frame structure, for processing the trunk (S), and actuators (31a, 31c, 51a, 51b) for controlling the position and force effect (F) of said means. In the invention, said actuators comprise at least one joint (100) driven by a pressurized medium and comprising a joint frame (101), a joint arm (103) swivelled in said joint frame, and a blade structure (105, 106) fitted in said joint, by means of which blade structure the pressure effect of the pressurized medium produces said swivelling.
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