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公开(公告)号：US10450059B2
公开(公告)日：2019-10-22
申请号：US15882573
申请日：2018-01-29
Applicant: Bell Helicopter Textron Inc.
Inventor： Kyle Thomas Cravener , Tyler Wayne Baldwin , Nicholas Allen Torske
Abstract: A multi-piece inboard beam assembly for use in a rotor blade assembly of a rotorcraft. The inboard beam assembly includes an inboard beam connected to an inboard beam fitting with an anti-rotational connection. The inboard beam is connected to a yoke via bearings and the inboard beam fitting is connected to a grip in a double shear condition. In use, the grip, the inboard beam fitting with the double shear connection, the inboard beam, a centrifugal force bearing held by the inboard beam, and the yoke carry the centrifugal force created upon rotation of the rotor blade assembly.
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公开(公告)号：US20190300151A1
公开(公告)日：2019-10-03
申请号：US15942707
申请日：2018-04-02
Applicant: Bell Helicopter Textron Inc.
Inventor： Tyler Wayne Baldwin , Michael Dearman
Abstract: A light weight hybrid torque transfer joint trunnion has an integral metal hub spline fitting oriented on a center axis. This integral metal hub spline fitting may be made of steel, aluminum, titanium, or the like and may be generally cylindrical. The integral metal hub spline fitting defines an integral central internally-splined mast or driveshaft coupling opening centered about the center axis. A composite material body centrally retains, and is cured to, the metal hub spline fitting. Torque transfer joint link attachment pins extend from the composite material body and are rigidly linked to the metal hub spline fitting. In an example constant-velocity joint, a plurality of pivoting linkages may each be rotatably coupled to the torque transfer joint link attachment pins, and each of the plurality of pivoting linkages may, in turn be secured to a rotor yoke configured to mount a plurality of rotorcraft blades.
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公开(公告)号：US20190277343A1
公开(公告)日：2019-09-12
申请号：US15916134
申请日：2018-03-08
Applicant: Bell Helicopter Textron Inc.
Inventor： Tyler Wayne Baldwin , Ryan T. Ehinger , Jared Mark Paulson , Michael Christopher Burnett , Kyle Thomas Cravener
Abstract: A link includes an outer composite portion substantially encircling at least two bearing pockets and a central substantially incompressible portion disposed between the at least two bearing pockets.
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公开(公告)号：US10392098B2
公开(公告)日：2019-08-27
申请号：US16289438
申请日：2019-02-28
Applicant: Bell Helicopter Textron Inc.
IPC: B63H1/06 , B64C11/34 , B64C29/00 , B64C27/605 , B64C27/41 , B64C11/00 , F16D3/62 , B64C27/473
Abstract: A high stiffness hub assembly for a rotor system operable to rotate with a mast of a rotorcraft. The hub assembly includes a yoke and a constant velocity joint assembly. The yoke has a plurality of blade arms each configured to hold a rotor blade. The constant velocity joint assembly provides a torque path from the mast to the yoke that includes a trunnion assembly, a plurality of drive links and a plurality of pillow blocks. The trunnion assembly is coupled to the mast and has a plurality of outwardly extending trunnions. Each drive link has a leading bearing coupled to one of the trunnions and a trailing bearing coupled to one of the pillow blocks. Each pillow block is independently mounted between an upper surface of the yoke and a hub plate.
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公开(公告)号：US20190016457A1
公开(公告)日：2019-01-17
申请号：US15990624
申请日：2018-05-26
Applicant: Bell Helicopter Textron Inc.
Inventor： Robert Patrick Wardlaw , John Richard McCullough , Amarjit Olenchery Kizhakkepat , Tyler Wayne Baldwin
CPC classification number: B64C29/0033 , B64C11/06 , B64C27/35 , F16C17/10 , F16C33/06 , F16C2326/43
Abstract: A proprotor system for a tiltrotor aircraft having helicopter and airplane flight modes includes a yoke having a plurality of blade arms each having an inboard pocket with an outboard surface. Each of a plurality of bearing assemblies is disposed at least partially within one of the inboard pockets with each bearing assembly including a shear bearing and a centrifugal force bearing having an integral shoe with an outboard surface. Each of a plurality of inboard beams is disposed at least partially between one of the centrifugal force bearings and one of the shear bearings. Each of a plurality of proprotor blades is coupled to one of the inboard beams. The integral shoes are coupled to the yoke such that there is a spaced apart relationship between the outboard surfaces of the integral shoes and the outboard surfaces of the pockets to prevent centrifugal force load transfer therebetween.
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Patent Agency Ranking
公开(公告)号：US20190016456A1
公开(公告)日：2019-01-17
申请号：US15990623
申请日：2018-05-26
Applicant: Bell Helicopter Textron Inc.
Inventor： Michael Dean Dearman , Amarjit Olenchery Kizhakkepat , Tyler Wayne Baldwin , Michael Christopher Burnett
Abstract: A proprotor system for a tiltrotor aircraft having a helicopter flight mode and an airplane flight mode includes a yoke having a plurality of blade arms each having an inboard pocket with a load transfer surface. Each of a plurality of bearing assemblies is disposed at least partially within one of the inboard pockets. Each of a plurality of inboard beams is disposed at least partially between a centrifugal force bearing and a shear bearing of each bearing assembly and has a proprotor blade coupled thereto. Each of a plurality of independent shoes is coupled between one of the centrifugal force bearings and the yoke. Each shoe has a load transfer surface that has a contact relationship with the load transfer surface of the respective inboard pocket forming a centrifugal force load path therebetween.
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公开(公告)号：US20190016454A1
公开(公告)日：2019-01-17
申请号：US15648650
申请日：2017-07-13
Applicant: Bell Helicopter Textron Inc.
Inventor： Kyle Thomas Cravener , Amarjit Kizhakkepat , Ken Shundo , Jared Mark Paulson , Tyler Wayne Baldwin
CPC classification number: B64C29/0033 , B64C27/35 , B64C27/54 , F16C23/045 , F16C27/02 , F16C27/063 , F16C33/203 , F16C33/22 , F16C2326/43
Abstract: A proprotor system for a tiltrotor aircraft having a helicopter flight mode and an airplane flight mode. The proprotor system includes a yoke having a plurality of blade arms with inboard pockets. A centrifugal force and shear bearing assembly is disposed in each of the inboard pockets of the yoke. Each of a plurality of proprotor blades is coupled to the yoke by one of the bearing assemblies such that each proprotor blade has a pitch change degree of freedom about a pitch change axis and a tilting degree of freedom about a focal point. Each bearing assembly includes a centrifugal force bearing coupled to the yoke, a shear bearing coupled to the yoke and an inboard beam coupled between the centrifugal force bearing and the shear bearing. Each inboard beam is coupled to a respective proprotor blade.
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公开(公告)号：US11415174B2
公开(公告)日：2022-08-16
申请号：US16381106
申请日：2019-04-11
Applicant: Bell Helicopter Textron Inc.
Inventor： Tyler Wayne Baldwin , Kyle Thomas Cravener , Tyson Henry
IPC: F16H57/04 , F16C33/66 , B64C27/12 , F16D33/18 , F16H57/038
Abstract: Embodiments are directed to solid lubricant assemblies for providing over temperature protection for bearings and gears in rotorcraft systems. A solid lubricant enters a fluid state above a certain temperature and is positioned so that fluid lubricant is applied to the bearings or gears.
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公开(公告)号：US11174912B2
公开(公告)日：2021-11-16
申请号：US16176585
申请日：2018-10-31
Applicant: Bell Helicopter Textron Inc.
Inventor： Tyler Wayne Baldwin , Kyle Thomas Cravener
Abstract: The present invention includes a torsion spring including a middle plate having a first attachment point displaced from the geometric center of the middle plate; a first elastomeric element secured to a first side of the middle plate and having an opening coincident with the first attachment point of the middle plate; a second elastomeric element secured to a second side of the middle plate and having an opening coincident with the first attachment point of the middle plate; a first outer plate secured to the first elastomeric element and having an opening coincident with the first attachment point of the middle plate; and a second outer plate secured to the second elastomeric element, having an opening coincident with the attachment point of the middle plate.
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公开(公告)号：US11020910B2
公开(公告)日：2021-06-01
申请号：US15153826
申请日：2016-05-13
Applicant: Bell Helicopter Textron Inc.
Abstract: The present invention includes methods of preparing a composite structure comprising: placing a first ply of a fibrous material with a curable material on a layup tool; adding one or more additional plies on the first ply, wherein each of the one or more additional plies has a perimeter that is different in size around the perimeter than a previous ply to form a taper; and curing the composite structure, wherein the curable material is selected to minimize, limit, control, or eliminate the outflow of the curable material along the perimeter of the composite structure during the curing step.
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