Inboard bearing assemblies with anti-rotation features

US10514060B2 · kind B2 · utility

Assignee

• Textron Innovations Inc. · US

Inventors

• Glenn Alan Shimek · Fort Worth, US
• Amarjit Olenchery Kizhakkepat · Fort Worth, US
• Ken Shundo · Fort Worth, US
• Michael Dearman · Weatherford, US
• Kyle Thomas Cravener · Arlington, US
• Michael Christopher Burnett · Fort Worth, US

Key dates

• Filing date: Sep 8, 2017
• Grant date: Dec 24, 2019
• Expiry date: Jul 20, 2038

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2326/43
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A bearing assembly for coupling a proprotor blade to a yoke in a proprotor system. The bearing assembly is positionable within an inboard pocket of a blade arm of the yoke. The proprotor system is operable for use on a tiltrotor aircraft having helicopter and airplane flight modes. The bearing assembly includes a centrifugal force bearing and a shear bearing having an inboard beam coupled therebetween. The centrifugal force bearing has a mating surface, a lateral movement constraint feature and at least one radially extending anti-rotation feature. The inboard beam has a mating surface in a contact relationship with the mating surface of the centrifugal force bearing, a lateral movement constraint feature operably associated with the lateral movement constraint feature of the centrifugal force bearing and at least one radially extending anti-rotation feature that corresponds with the at least one radially extending anti-rotation feature of the centrifugal force bearing.