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    Inboard Bearing Assemblies with Improved Accessibility
    1.
    发明申请
    Inboard Bearing Assemblies with Improved Accessibility 审中-公开

    公开(公告)号：US20190016455A1

    公开(公告)日：2019-01-17

    申请号：US15990622

    申请日：2018-05-26

    Applicant: Bell Helicopter Textron Inc.

    Inventor： Amarjit Olenchery Kizhakkepat ,  Michael Christopher Burnett ,  Michael Dean Dearman

    IPC: B64C29/00 ,  B64C11/06 ,  F16C17/10 ,  F16C33/06

    CPC classification number: B64C29/0033 ,  B64C11/06 ,  B64C27/35 ,  F16C17/10 ,  F16C33/06 ,  F16C2326/43

    Abstract: A proprotor system for a tiltrotor aircraft includes a yoke having a plurality of blade arms each having an inboard pocket. 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 latch assemblies selectively couples one of the bearing assemblies to the yoke. Each latch assembly is rotatable relative to the yoke between an engaged position wherein the latch assembly is engagable with one of the bearing assemblies to couple the bearing assembly to the yoke and a disengaged position wherein the latch assembly is disengaged from the respective bearing assembly enabling installation and removal of the respective bearing assembly relative to the respective pocket.

    Inboard Bearing Assemblies with Anti-Rotation Features
    4.
    发明申请
    Inboard Bearing Assemblies with Anti-Rotation Features 审中-公开

    公开(公告)号：US20190017543A1

    公开(公告)日：2019-01-17

    申请号：US15698796

    申请日：2017-09-08

    Applicant: Bell Helicopter Textron Inc.

    Inventor： Glenn Alan Shimek ,  Amarjit Olenchery Kizhakkepat ,  Ken Shundo ,  Michael Dean Dearman ,  Kyle Thomas Cravener ,  Michael Christopher Burnett

    IPC: F16C27/06 ,  B64C29/00

    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.

    Inboard Bearing Assemblies having Independent Shoes
    5.
    发明申请
    Inboard Bearing Assemblies having Independent Shoes 审中-公开

    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

    IPC: B64C29/00 ,  B64C27/12 ,  B64C27/41

    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.

    Inboard bearing assemblies with improved accessibility
    7.
    发明授权
    Inboard bearing assemblies with improved accessibility 有权

    公开(公告)号：US10507912B2

    公开(公告)日：2019-12-17

    申请号：US15990622

    申请日：2018-05-26

    Applicant: Bell Helicopter Textron Inc.

    Inventor： Amarjit Olenchery Kizhakkepat ,  Michael Christopher Burnett ,  Michael Dean Dearman

    IPC: B64C27/35 ,  B64C29/00 ,  B64C11/06 ,  F16C33/06 ,  F16C17/10

    Abstract: A proprotor system for a tiltrotor aircraft includes a yoke having a plurality of blade arms each having an inboard pocket. 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 latch assemblies selectively couples one of the bearing assemblies to the yoke. Each latch assembly is rotatable relative to the yoke between an engaged position wherein the latch assembly is engagable with one of the bearing assemblies to couple the bearing assembly to the yoke and a disengaged position wherein the latch assembly is disengaged from the respective bearing assembly enabling installation and removal of the respective bearing assembly relative to the respective pocket.

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