BACKHOE
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United States of America Patent
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Issued Date -
Sep 29, 2016
app pub date -
Mar 27, 2015
filing date -
Mar 27, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A backhoe includes a boom with one end rotatably supported by a supporting structure fixed on a working vehicle, and a boom cylinder with one end rotatably supported by the supporting structure, and with another end rotatably supported by the boom, the boom cylinder that drives the boom by operating in a freely retractable manner. The boom cylinder includes a piston, a cylinder tube that contains the piston, a piston rod connected to the piston, a scale rod fixed in parallel to the piston rod and operates along the outer surface of the cylinder tube in response to an operation of the piston rod, a scale arranged on the outer surface of the cylinder tube along the scale rod, and an indicator provided on the piston rod and operates along the scale in response to the operation of the piston rod.
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