Invention Grant
- Patent Title: Mast bearing system for a tiltrotor aircraft
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Application No.: US16678938Application Date: 2019-11-08
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Publication No.: US10882612B2Publication Date: 2021-01-05
- Inventor: Russell L. Mueller , Tyson T. Henry , Ezra M. Tiprigan
- Applicant: Textron Innovations Inc.
- Applicant Address: US TX Fort Worth
- Assignee: Textron Innovations Inc.
- Current Assignee: Textron Innovations Inc.
- Current Assignee Address: US TX Fort Worth
- Agency: Patent Capital Group
- Main IPC: F16C19/36
- IPC: F16C19/36 ; F16C33/34 ; F16C33/46 ; F16C25/08 ; B64D35/00 ; B64C29/00 ; F16C43/06

Abstract:
A tiltrotor aircraft may be provided and may include a mast assembly, in which the mast assembly may include a mast; a bearing system; a housing; and a housing cap secured to the housing, wherein the bearing system is between the mast and the housing. The bearing system may further include a first bearing assembly including a first inner race, a first outer race, and a plurality of first tapered roller bearings; a second bearing assembly including a second inner race, a second outer race, and a plurality of second tapered roller bearings; an inner spacer and an outer spacer in which the inner and outer spacers are between the first and second bearing assemblies; and a retaining device in which the retaining device and the housing cap provide, at least in part, pre-loading for the first and second bearing assemblies.
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