Patent ID: 11873820
Assignee: REGAL BELOIT AMERICA, INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 20:
21. A blower in accordance with claim 18 further comprising:
a back ring connected to the front side of the backplate and to the impeller blades, the back ring having a back ring outer diameter and a back ring inner diameter, the backplate having a backplate outer diameter, the back ring outer diameter being greater than the backplate outer diameter; and
a front ring connected to the forward ends of the impeller blades, the front ring having a front ring outer diameter and a front ring inner diameter, the front ring outer diameter being greater than the back ring outer diameter;
wherein the impeller blades extend axially forward from the back ring to the front ring, the impeller further comprising impeller back fins, the impeller back fins being spaced from one another circumferentially about the impeller axis, the impeller back fins extending axially rearward from the back ring.