Patent ID: 11971053
Assignee: GARRETT TRANSPORTATION I INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  G  Y | IPC F  G

Claim 0:
1. A rotor of a fluid machine comprising:
a wheel that is supported for rotation about an axis of rotation, the wheel extending outward in a radial direction from the axis of rotation and terminating at an outer rim edge of the wheel;
a plurality of blades included on the wheel;
an inter-blade area with an inter-blade area surface defined circumferentially between a first blade and a second blade of the plurality of blades with respect to the axis of rotation; and
a balancing mark on the wheel and recessed in an axial direction along the axis of rotation into the inter-blade area surface, the balancing mark defined by an outer perimeter edge that is continuous at the inter-blade area surface, the balancing mark defined by a smooth interior surface that is bordered by the outer perimeter edge, the balancing mark being elongate and arcuate along a length direction directed between a first end and a second end of the balancing mark, the first end and the second end defining respective portions of the outer perimeter edge, the balancing mark having a depth measured in the axial direction, the depth varying gradually as the balancing mark extends in the length direction, the balancing mark having a width measured across the balancing mark in a width direction that is transverse to axis of rotation and the length direction, the width varying gradually as the balancing mark extends in the length direction, an entirety of the outer perimeter edge of the balancing mark being spaced apart inwardly in the radial direction from the outer rim edge.