FLOW-BYPASSING STRUCTURE OF GRINDING TOOL AND GRINDING TOOL HAVING THE SAME
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United States of America Patent
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Issued Date -
Apr 2, 2015
app pub date -
Oct 1, 2013
filing date -
Oct 1, 2013
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a flow-bypassing structure and a grinding tool having the same. The main body has an intake passage and an exhaust passage. A cylinder is disposed in an interior of the main body and has an air inlet communicated with the intake passage and an air outlet communicated with the exhaust passage to form an airflow pathway. A rotor is disposed in the cylinder, and a rotational axle base is rotatably disposed though the cylinder and in a rotational cooperative relationship with the rotor. An end of the rotational axle base is extended and formed with a rotational working portion outside the cylinder. The surroundings of the rotational working portion define a space. A flow-bypassing passage is communicated with the airflow pathway and the space, and an end of the flow-bypassing passage is open toward the space.
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