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US 7,677,789 B2Granted
Mixer rotor with spiral core ribs
AssigneeBridgestone Americas Tire Operations, LLC
InventorsVernie D. Huffstetler, Lakshman Santanam, Mukulbhai N. Parikh, James W. Page
Life of this patent
Estimating the term…
Abstract
An improved rotor design is provided for an internal batch mixing machine. A rotor has a rotor body with an axially extending central cavity, and with a plurality of mixing wings defined on the outer surface of the rotor body. A plurality of internal reinforcing ribs of generally spiral or curved configuration are defined on the rotor body and project into the cavity.
Claims19
A rotor for use in an internal batch mixing machine, comprising:
- a rotor body having a first and a second end, and having a central rotational axis and an axial length from the first end to the second end, the rotor body being generally hollow and having an axially extending cavity defined within the body;
- a plurality of mixing wings defined on an outer surface of the rotor body;
- and
- a plurality of internal reinforcing ribs of generally spiral configuration defined on said rotor body and projecting into said cavity.
1 more element
A rotor for an internal batch mixing machine, comprising:
- an integrally cast rotor body having a longitudinal axis of rotation and having an internal longitudinally extending cavity, the rotor body including at least two integrally cast internal reinforcing ribs projecting into the cavity and extending longitudinally along paths curved along the longitudinal axis of the rotor body;
- the rotor body further including at least two integrally cast external wings having leading edges curving about the longitudinal axis of the rotor;
- and
- wherein the curved path of the internal reinforcing ribs generally parallels the curving leading edges of the external wings.
1 more element
A rotor for an internal batch mixing machine, comprising:
- an internally cast rotor body having a longitudinal axis of rotation and having an internal longitudinally extending cavity, the rotor body including at least two integrally cast internal reinforcing ribs projecting into the cavity and extending longitudinally along paths curved along the longitudinal axis of the rotor body;
- an axial siphon tube located along the axis of the rotor body and connected to the rotor body for rotation with the rotor body;
- and
- wherein each of the reinforcing ribs extends radially inward into engagement with the siphon tube thereby dividing the cavity of the rotor body into a plurality of separate water return cavity segment.
1 more element
Dependencies are inferred from the claim text.