DRIVE TRANSMISSION DEVICE AND CONSTRUCTION MACHINE
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United States of America Patent
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Issued Date -
Oct 3, 2024
app pub date -
Jun 13, 2024
filing date -
Mar 31, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
A drive transmission device according to one embodiment of the disclosure includes: an arm having a motor that generates a rotational force; a speed reducer that is provided in the arm and has a carrier for decelerating rotation of the motor and outputting the decelerated rotation; a bucket fixed to the carrier by a reamer bolt, the reamer bolt being inserted in a bracket through hole formed in the bucket; and a resin bush provided between an internal surface of the bracket through hole and an external lateral surface of the reamer bolt. The mechanical strength of the resin bush is lower than the mechanical strength of the bucket and the mechanical strength of the reamer bolt.
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