Patent ID: 11859634
Assignee: REGAL BELOIT AMERICA, INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 7:
8. A electric motor assembly comprising:
an electric motor; and
a fan assembly coupled to said electric motor and configured to rotate about an axis, said fan assembly comprising:
a hub comprising,
a core ring;
a first inner ring circumscribing said core ring;
a first plurality of circumferentially-spaced ribs extending between said core and said first inner ring, wherein the first plurality of ribs consists of ribs which are spaced about the entire circumferences of the core ring and the first inner ring;
a second inner ring circumscribing said first inner ring; and
a second plurality of circumferentially-spaced deformable ribs to facilitate balancing said fan assembly, said second plurality of deformable ribs extending between said first inner ring and said second inner ring, wherein the second plurality of ribs consists of ribs which are spaced about the entire circumferences of the first inner ring and the second inner ring, wherein the number of ribs of said first plurality of ribs is equal to the number of ribs of said second plurality of deformable ribs, wherein the second plurality of ribs is located radially outwardly of the first plurality of ribs, wherein said first plurality of ribs is circumferentially offset from said second plurality of deformable ribs; and

a plurality of circumferentially-spaced blades coupled to an outer periphery of said hub.