MULTISTAGE OIL PUMP
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United States of America Patent
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Issued Date -
Apr 30, 2015
app pub date -
May 16, 2013
filing date -
May 17, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A conventional multistage oil pump, wherein the components are formed of a ferrous material, and thus, there have been presented a problem that the weight is large. The multistage oil pump and rotors are connected in a series, wherein a rotor case, a first rotor case and a second rotor case are connected in the axial direction, and the inside thereof is partitioned by a spacer. The first rotor case and the second rotor case are jointed to the spacer with dowel pins. The rotors are formed of a ferrous material, while the spacer being formed of an aluminum-based material.
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