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US 8,409,495 B2Granted
Rotor with inlet perimeters
OwnerPaul V. Cooperinventor
Life of this patent
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Abstract
A device for use in a molten metal pump helps alleviate jams between rotating rotor blades and a stationary pump base. The device includes inlet perimeters that partially define one or more openings, and one or more rotor blades, wherein each rotor blade has a portion that directs molten metal into a pump chamber, and a portion that directs molten metal outwards. Each rotor blade may also include a recess that makes an opening larger to enable more molten metal to pass through the openings.
Claims16
A rotor device for use in a molten metal pump, the device comprising:
- a top and a bottom;
- a plurality of openings through which molten metal can pass, wherein each of the openings is defined in part by an inlet perimeter;
- a plurality of imperforate rotor blades for displacing molten metal, wherein each of the plurality of rotor blades has a leading face that includes a first portion that directs molten metal downward and a second portion beneath the first portion that directs molten metal outward, and a trailing face that includes a recess that increases the size of one of the openings to help permit molten metal to pass therethrough and into a pump chamber;
- wherein as the device is rotated, the openings, the inlet perimeters, and the rotor blades rotate.
1 more element
Dependencies are inferred from the claim text.