Patent · US Active

Impeller retention apparatus

US9567871B2 · kind B2 · utility

1Cited by

19References

14Claims

0Family size

Assignee

SIKORSKY AIRCRAFT CORPORATION · US

Inventors

Thomas L. Tully · Oxford, US
Daniel V. Brown · Stamford, US
Yuriy Gmirya · New York, US

Key dates

Filing date	Apr 23, 2014
Grant date	Feb 14, 2017
Priority date	—
Expiry date	Aug 4, 2035

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16C25/08
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An impeller retention apparatus is provided. The impeller retention apparatus includes a bearing element, a rotatable gear shaft rotatably supported within an outer body by the bearing element, an impeller disposed about and coupled to the rotatable gear shaft to rotate with the rotatable gear shaft, a preload spacer and a flexible coupling. The preload spacer is disposed along the rotatable gear shaft between the impeller and the bearing element and includes a forward preload spacer end abutting an aft end of the bearing element, an aft preload spacer end abutting a forward face of the impeller and an elastic element that biases the impeller away from the bearing element in an axial direction along the rotatable gear shaft. The flexible coupling is coupled to the rotatable gear shaft such that the outer body and the flexible coupling cooperatively define an annulus from which the impeller receives an airflow.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.