Vacuum pump with lighter cap
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United States of America Patent
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Oct 24, 2017
Issued Date -
N/A
app pub date -
Oct 2, 2015
filing date -
Oct 3, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
In the vane pump comprising the housing, the vane, and the cap, the sliding surface of the cap is configured as arc shape in the view from the rotational axis direction and the width toward the sliding direction of the cap is configured to be smaller than the width at the sliding angle field which is virtual area for contacting the inner surface of the pump room among the circumference including the arc shape of the sliding surface of the cap and to be bigger than the width at the high loading area where the load added to the sliding surface which is bigger than the predetermined value among the sliding angle field.
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