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公开(公告)号：US10364848B2
公开(公告)日：2019-07-30
申请号：US15190790
申请日：2016-06-23
Applicant: Bell Helicopter Textron, Inc.
Inventor： Russell L. Mueller , Michael S. Seifert , Steven K. Spears , Frank B. Stamps
Abstract: A drive coupling has first and second coaxial end adapters. A first set of at least two coaxial helical elements has a first end of each element attached to the first end adapter, and a second end of each element is coupled to the second end adapter. At least one biasing device biases the end adapters relative to each other. Torque applied to one of the end adapters is transferred through the first set of helical elements to the other end adapter, the helical elements allowing for misalignment of the end adapters during operation.
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公开(公告)号：US20200172260A1
公开(公告)日：2020-06-04
申请号：US16208048
申请日：2018-12-03
Applicant: Bell Helicopter Textron Inc.
Inventor： Russell L. Mueller , Tyson Henry , Colton Gilliland
IPC: B64D35/00 , B64C29/00 , F16H57/032 , F16H57/04
Abstract: Briefly, the disclosure relates to apparatuses and methods to form a gearbox enclosure comprising an external liner, an internal liner, and a variable porosity region disposed between the external liner and the internal liner. The variable porosity region may be configured to accommodate flow of the lubricant, thereby providing a capability to cool, for example, a lubricating fluid at an elevated temperature.
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公开(公告)号：US20200011411A1
公开(公告)日：2020-01-09
申请号：US16030063
申请日：2018-07-09
Applicant: Bell Helicopter Textron Inc.
Inventor： Colton J. Gilliland , Russell L. Mueller
Abstract: A bearing system is provided in one example embodiment and may include 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. The inner bearing assembly allows tilting movements of the bearing system and the outer bearing assembly allows rotational movements and supports, at least in part, radial loads for the bearing system.
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公开(公告)号：US20170370419A1
公开(公告)日：2017-12-28
申请号：US15190790
申请日：2016-06-23
Applicant: Bell Helicopter Textron, Inc.
Inventor： Russell L. Mueller , Michael S. Seifert , Steven K. Spears , Frank B. Stamps
Abstract: A drive coupling has first and second coaxial end adapters. A first set of at least two coaxial helical elements has a first end of each element attached to the first end adapter, and a second end of each element is coupled to the second end adapter. At least one biasing device biases the end adapters relative to each other. Torque applied to one of the end adapters is transferred through the first set of helical elements to the other end adapter, the helical elements allowing for misalignment of the end adapters during operation.
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Patent Agency Ranking
公开(公告)号：US11313455B2
公开(公告)日：2022-04-26
申请号：US16152975
申请日：2018-10-05
Applicant: Bell Helicopter Textron Inc.
Inventor： Russell L. Mueller
Abstract: In some examples, an aircraft gearbox comprises a housing, a barrier, a rotatable drive system component, a set of gears, and a lubrication system. The barrier separates a first compartment and a second compartment within the housing. Each of the rotatable drive system component and the set of gears operable to rotate based on torque received from an engine. The rotatable drive system component is located in the first compartment. The set of gears is located in the second compartment. The lubrication system comprises a first lubrication subsystem and a second lubrication subsystem, which are, at least in part, independent from one another. The first lubrication subsystem is operable to lubricate the rotatable drive system component in the first compartment. The second lubrication subsystem is operable to lubricate the set of gears in the second compartment. The barrier inhibits lubricant from passing between the first compartment and the second compartment.
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公开(公告)号：US11060605B2
公开(公告)日：2021-07-13
申请号：US16030063
申请日：2018-07-09
Applicant: Bell Helicopter Textron Inc.
Inventor： Colton J. Gilliland , Russell L. Mueller
Abstract: A bearing system is provided in one example embodiment and may include 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. The inner bearing assembly allows tilting movements of the bearing system and the outer bearing assembly allows rotational movements and supports, at least in part, radial loads for the bearing system.
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公开(公告)号：US20190283858A1
公开(公告)日：2019-09-19
申请号：US15920195
申请日：2018-03-13
Applicant: Bell Helicopter Textron Inc.
Inventor： Russell L. Mueller
Abstract: Systems and methods include providing an aircraft with a fuselage and a wing assembly rotatable relative to the fuselage about a stow axis between a flight position and a stowed position The aircraft includes an engine reduction gearbox (“ERGB”) having a retractable driveshaft assembly with an actuation shaft and a first friction plate. Actuation of the retractable driveshaft assembly by the actuation shaft causes the first friction plate to selectively engage and disengage a second friction plate associated with a mid-wing gearbox (“MWGB”) via axially translatable motion of the retractable driveshaft assembly along its rotation axis. When the friction plates are engaged, rotation of the retractable driveshaft assembly imparts rotation to at least one rotor assembly. When the friction plates are disengaged, the wing assembly is capable of selectively rotation with respect to the fuselage about the stow axis between the flight position and the stowed position.
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公开(公告)号：US11009078B2
公开(公告)日：2021-05-18
申请号：US15961609
申请日：2018-04-24
Applicant: Bell Helicopter Textron Inc.
Inventor： Colton Gilliland , Russell L. Mueller
Abstract: A driveshaft includes a first end, a second end, and a length extending from the first end to the second end. The driveshaft includes an engagement section at the first end configured to cooperatively engage and transfer torque to a gearbox. The driveshaft also includes a compressible section configured to selectively decrease the length of the driveshaft. The driveshaft being configured to transition between an engaged configuration, wherein the engagement portion is engaged with the gearbox, and a disengaged configuration, wherein the compressible section is compressed, and the engagement portion is disengaged from the apparatus.
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公开(公告)号：US20190323563A1
公开(公告)日：2019-10-24
申请号：US15961609
申请日：2018-04-24
Applicant: Bell Helicopter Textron Inc.
Inventor： Colton Gilliland , Russell L. Mueller
Abstract: A driveshaft includes a first end, a second end, and a length extending from the first end to the second end. The driveshaft includes an engagement section at the first end configured to cooperatively engage and transfer torque to a gearbox. The driveshaft also includes a compressible section configured to selectively decrease the length of the driveshaft. The driveshaft being configured to transition between an engaged configuration, wherein the engagement portion is engaged with the gearbox, and a disengaged configuration, wherein the compressible section is compressed, and the engagement portion is disengaged from the apparatus.
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