Rotary fluid element and method of correcting unbalance of rotary fluid element
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United States of America Patent
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Nov 5, 2019
Grant Date -
Dec 15, 2016
app pub date -
Mar 5, 2014
filing date -
Mar 5, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An object is to provide a rotary fluid element and a method of correcting unbalance of a rotary fluid element, whereby unbalance of the rotary fluid element can be corrected multiple times in a necessary and sufficient amount without sacrificing strength of blades. A rotary fluid element includes: a plurality of blades extending in a centrifugal direction on an outer peripheral surface of a boss portion and disposed at intervals in a circumferential direction; and a cut-remove portion for reducing unbalance disposed in a blade gap between the blades adjacent in the circumferential direction. The cut-remove portion includes a first cut-remove portion which is cut and removed on a radially-outer rim portion between the blades, and an additional cut-remove portion which is cut and removed on a radially-inner portion disposed inside the first cut-remove portion with respect to a radial direction.
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