Hybrid concrete saw
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United States of America Patent
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Jan 13, 2015
Grant Date -
Sep 26, 2013
app pub date -
Mar 13, 2013
filing date -
Mar 21, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A hybrid concrete saw includes a saw blade, an internal combustion engine having an output shaft operably connected to the saw blade, and an electric motor connectable to a battery for receiving power therefrom and having an output shaft operably connected to the saw blade. A transmission is connected to the output shaft of each of the engine and the electric motor and the saw blade. A clutch selectively decouples one of the engine and the electric motor from the transmission. A controller controls operation of the engine and the electric motor. The concrete saw is operable in a first mode where the saw blade is driven solely by the engine, a second mode where the saw blade is driven solely by the electric motor, and a third mode where the saw blade is driven by both the engine and the electric motor.
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