Christopher J Felix

US Patent:

20170298948, Oct 19, 2017

Filed:

Mar 7, 2017

Appl. No.:

15/452068

Inventors:

- Morton Grove IL, US
Christopher J. FELIX - Farmington NY, US
Marcos D. ROIMICHER - Lombard IL, US

International Classification:

F04D 29/056
F04D 17/16
F04D 17/12

Abstract:

A multi-stage pump featuring different stages configured to pump a fluid from a pump suction and to a pump discharge; and a center bushing configured between the different stages, having a center bushing side configured with pockets to balance axial forces between the different stages of the multistage pump. The pockets are configured as curved rib pockets, extruded circle or circular pockets, or full length rib pockets.

US Patent:

20170184115, Jun 29, 2017

Filed:

Dec 7, 2016

Appl. No.:

15/371878

Inventors:

- Morton Grove IL, US
Christopher J. FELIX - Farmington NY, US

International Classification:

F04D 29/16
F04D 29/08

Abstract:

An opposing impeller arrangement, for using in an opposed impeller pump, features a combination of a stage impeller arrangement and a stage impeller arrangement having opposing impellers and different impeller and wear ring arrangements. The stage impeller arrangement may include a stage impeller and a stage wear ring, and be configured to receive an input fluid flow and a pump stage fluid flow. The stage impeller arrangement may include a stage impeller and a stage wear ring configured to receive the pump stage fluid flow and provide a pump stage fluid flow, and may also include a stage wear ring undercut configured between the stage impeller and the stage wear ring to offset generated axial thrust in the opposing impeller pump, based upon the different impeller and wear ring arrangements.