Rotor with sliding vane has a different width of vane slot extended from the longitudinal axis to the outer surface of the rotor body
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United States of America Patent
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Sep 15, 2020
Grant Date -
Dec 27, 2018
app pub date -
Jun 14, 2018
filing date -
Jun 27, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A method of casting a rotor using a cavity and core mold allows a longitudinal slot oriented transversely to the axis of rotation to be finish ground to high precision and tight tolerances by casting the slot to have a wider section which extends from the axis to a radius greater than the radii of the hubs of the rotor, and a narrower section which extends from the wider section to the outer surface of the rotor. The geometrical relation of the slot sections to the hubs as cast permits the grinding step to be performed without forming a leak path in either of the hubs.
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