公开(公告)号：US10882612B2

公开(公告)日：2021-01-05

申请号：US16678938

申请日：2019-11-08

Applicant: Textron Innovations Inc.

Inventor： Russell L. Mueller ,  Tyson T. Henry ,  Ezra M. Tiprigan

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.

公开(公告)号：US10654569B2

公开(公告)日：2020-05-19

申请号：US16049553

申请日：2018-07-30

Applicant: Textron Innovations Inc.

Inventor： Russell L. Mueller ,  Tyson T. Henry ,  Ezra M. Tiprigan

IPC: F16C19/38 ,  B64C29/00 ,  F16C19/36 ,  F16C33/34 ,  F16C43/06 ,  F16C33/46 ,  B64D35/00

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.

公开(公告)号：US20200031463A1

公开(公告)日：2020-01-30

申请号：US16049553

申请日：2018-07-30

Applicant: Textron Innovations Inc.

Inventor： Russell L. Mueller ,  Tyson T. Henry ,  Ezra M. Tiprigan

IPC: B64C29/00 ,  F16C19/36 ,  F16C33/34 ,  F16C43/06 ,  F16C33/46

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.