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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
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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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
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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公开(公告)号：US12163584B2
公开(公告)日：2024-12-10
申请号：US17858800
申请日：2022-07-06
Applicant: TEXTRON INNOVATIONS INC.
Inventor： Russell L. Mueller
Abstract: In some examples, an aircraft gearbox comprises a plurality of gears and a hybrid lubrication system to lubricate the plurality of gears. The plurality of gears comprises a first gear and a second gear. The plurality of gears operable to rotate based on torque received from a driveshaft. The hybrid lubrication system comprises a pressurized lubrication system and a non-pressurized lubrication system. The pressurized lubrication system comprises a nozzle to spray a lubricant onto the first gear. The non-pressurized lubrication system comprises a reservoir to catch a portion of the lubricant from the pressurized lubrication system. The second gear is operable to disperse the lubricant across others of the plurality of gears based on the second gear rotating through the portion of the lubricant. The non-pressurized lubrication system further comprises a shroud configured to confine the portion of the lubricant within the non-pressurized lubrication system and to return overspray of the lubricant sprayed onto the first gear and lubricant dispersed by the second gear to the reservoir.
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Patent Agency Ranking
公开(公告)号：US20240141979A1
公开(公告)日：2024-05-02
申请号：US17979484
申请日：2022-11-02
Applicant: Textron Innovations Inc.
Inventor： Russell L. Mueller , Charles H. Speller
IPC: F16H57/022 , F16C19/52
CPC classification number: F16H57/022 , F16C19/525 , F02C7/36
Abstract: Systems and methods are described for shoulders that can be implemented on shafts in gear systems, such as a drive train. The shoulders, in combination with other components like bearings, or nuts, can help restrict movement of the shaft within the drive train. Use of the shoulders in various embodiments can avoid the need for grind reliefs in corners. Grind reliefs can help in prior art systems where machining or grinding is used at surfaces where raceways of bearings border shoulders that are integrated with the shaft. Grind reliefs create tight spaces where edge breaks are difficult to create. Press-fit shoulders, such as described herein, allow machining and edge break creation on the shaft prior to installation of the shoulder.
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公开(公告)号：US20220349465A1
公开(公告)日：2022-11-03
申请号：US17858800
申请日：2022-07-06
Applicant: TEXTRON INNOVATIONS INC.
Inventor： Russell L. Mueller
IPC: F16H57/04
Abstract: In some examples, an aircraft gearbox comprises a plurality of gears and a hybrid lubrication system to lubricate the plurality of gears. The plurality of gears comprises a first gear and a second gear. The plurality of gears operable to rotate based on torque received from a driveshaft. The hybrid lubrication system comprises a pressurized lubrication system and a non-pressurized lubrication system. The pressurized lubrication system comprises a nozzle to spray a lubricant onto the first gear. The non-pressurized lubrication system comprises a reservoir to catch a portion of the lubricant from the pressurized lubrication system. The second gear is operable to disperse the lubricant across others of the plurality of gears based on the second gear rotating through the portion of the lubricant. The non-pressurized lubrication system further comprises a shroud configured to confine the portion of the lubricant within the non-pressurized lubrication system and to return overspray of the lubricant sprayed onto the first gear and lubricant dispersed by the second gear to the reservoir.
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公开(公告)号：US11598412B2
公开(公告)日：2023-03-07
申请号：US17243267
申请日：2021-04-28
Applicant: Textron Innovations Inc.
Inventor： Colton J. Gilliland , Russell L. Mueller
Abstract: A planetary gear system is provided in one example embodiment and may include a planet gear further comprising a bearing system, the bearing system further comprising an inner bearing assembly comprising a spherical bearing and an outer race; an outer bearing assembly comprising a plurality of cylindrical roller bearings, an inner race, and an outer race; and a race element comprising an inner surface and an outer surface, wherein the outer surface of the race element is the inner race for the outer bearing assembly and the inner surface of the race element is associated with the outer race for the inner bearing assembly.
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公开(公告)号：US20210246978A1
公开(公告)日：2021-08-12
申请号：US17243267
申请日：2021-04-28
Applicant: Textron Innovations Inc.
Inventor： Colton J. Gilliland , Russell L. Mueller
Abstract: A planetary gear system is provided in one example embodiment and may include a planet gear further comprising a bearing system, the bearing system further comprising an inner bearing assembly comprising a spherical bearing and an outer race; an outer bearing assembly comprising a plurality of cylindrical roller bearings, an inner race, and an outer race; and a race element comprising an inner surface and an outer surface, wherein the outer surface of the race element is the inner race for the outer bearing assembly and the inner surface of the race element is associated with the outer race for the inner bearing assembly.
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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
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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