Patent ID: 11959489
Assignee: ROBERT BOSCH GMBH
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 1:
2. The fan of claim 1, wherein
the band comprises:
a cylindrical portion that extends in parallel to the fan rotational axis, the cylindrical portion including the band trailing end;
a lip portion that extends at an angle relative to the fan rotational axis, a surface of the lip portion including the band leading end; and
an intermediate portion that connects one end of the cylindrical portion to one end of the lip portion,

and wherein
the tip of each blade is joined to the cylindrical portion along a corresponding blade tip region,
the cylindrical portion includes first regions of the line having a first radial dimension and second regions of the line having a second radial dimension,
the second radial dimension is less than the first radial dimension,
the first regions of the line are disposed between respective blade tip regions of tips of a pair of adjacent blades, and
the second regions of the line are radially aligned with the respective blade tip regions.