Patent · US Active

Flexbeam rotor

US9555880B2 · kind B2 · utility

1Cited by

16References

22Claims

0Family size

Assignee

SIKORSKY AIRCRAFT CORPORATION · US

Inventors

David H. Hunter · Cheshire, US
Ryan Thomas Casey · San Diego, US
Francis E. Byrnes · White Plains, US

Key dates

Filing date	Feb 8, 2012
Grant date	Jan 31, 2017
Priority date	—
Expiry date	Feb 9, 2034

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB64C27/33
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A rotor hub assembly for a helicopter includes a rotor hub operably connectable to a shaft of a helicopter. One or more flex beams extend through the rotor hub, with each end of each flex beam operably connectable to a rotor blade. One or more inner bearings are located at the rotor hub to spherically support the one or more flex beams in the rotor hub. A rotor assembly for a helicopter includes a rotor hub operably connectable to a shaft of a helicopter. One or more flex beams extending through the rotor hub and one or more inner bearings are located at the rotor hub to spherically support the one or more flex beams in the rotor hub. A plurality of rotor blades are operably connected to the ends of the one or more flex beams.

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