Patent · US Active

Blade shroud for fluid element

US9022742B2 · kind B2 · utility

1Cited by

11References

1Claims

0Family size

Assignee

AEROJET ROCKETDYNE OF DE, INC. · US

Inventors

Jeff Miller · Calabasas, US
Kelvin Sorensen · Calabasas, US
John Fung · Parramatta, AU
Thaddeus Chilcoat · Moorpark, US
Fabian Bitar · Calabasas, US

Key dates

Filing date	Jan 4, 2012
Grant date	May 5, 2015
Priority date	—
Expiry date	Sep 24, 2033

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05D2240/304
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The disclosed fluid elements include radial blades extending to trailing edges and that are integral with front and rear shrouds to provide a fluid exit. Fillets adjoin the trailing edge and the front and rear shrouds at the exit. The front and rear shrouds respectively have first and second perimeter thicknesses at the impeller outer perimeter. The first perimeter thickness is greater than the second perimeter thickness at the trailing edge and adjacent to the exit, which provides greater high cycle fatigue in the area of the fillets.

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