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公开(公告)号：US11767006B2
公开(公告)日：2023-09-26
申请号：US17677721
申请日：2022-02-22
Applicant: Bell Textron Inc.
CPC classification number: B60V1/14 , B64C11/001 , B64C11/06
Abstract: A rotor assembly for generating thrust for a vehicle. The rotor assembly includes a rotor hub and a plurality of rotor blade assemblies coupled to the rotor hub. Each rotor blade assembly includes a metallic bearing race, a composite rotor blade and a metallic coupling assembly. The composite rotor blade has a root section with a radially outwardly tapered outer surface. The metallic coupling assembly has a radially inwardly tapered inner surface that receives the radially outwardly tapered outer surface of the root section of the rotor blade therein to provide a centrifugal force seat for the rotor blade. The coupling assembly includes at least two circumferentially distributed coupling members. The coupling assembly is configured to couple the rotor blade to the bearing race and to provide a centrifugal force load path therebetween.
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公开(公告)号：US20220135215A1
公开(公告)日：2022-05-05
申请号：US17089131
申请日：2020-11-04
Applicant: Bell Textron Inc.
Inventor： Andrew Ryan Maresh , Robert P. Wardlaw , Glenn Shimek
Abstract: There is disclosed in one example a mechanical assembly, including: a parent part including a parent part lug; a bushing to pass through the lug, the bushing comprising a central inner diameter, and respective left and right relief zones having a second inner diameter different from the central inner diameter; and a through-pin to pass through the bushing.
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公开(公告)号：US11136116B2
公开(公告)日：2021-10-05
申请号：US16561516
申请日：2019-09-05
Applicant: Bell Textron Inc.
Inventor： Andrew Ryan Maresh , Chyausong Tzeng , Russell Mueller
Abstract: Embodiments are directed to a double Hooke's joint gimbal in a rotor system. An upper Hooke's joint has four arms extending radially outward to define first and second axes, and a lower Hooke's joint has four arms extending radially outward to define third and fourth axes. A pair of connectors couple the upper Hooke's joint and the lower Hooke's joint. A first set of bearings are positioned between arms on the upper and lower Hooke's joints and the connectors. The first set of bearings comprise an elastomer, such as elastomeric journal bearings. The upper Hooke's joint is coupled to a yoke and rotor blades by a driver assembly that allows rotor blade flapping. The lower Hooke's joint is coupled to and driven by a mast. A spherical bearing allows the upper Hooke's joint to move laterally along the mast.
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公开(公告)号：US20210291960A1
公开(公告)日：2021-09-23
申请号：US16821266
申请日：2020-03-17
Applicant: Bell Textron Inc.
Inventor： Andrew Ryan Maresh , Kyle Thomas Cravener
Abstract: Embodiments are directed to a rotor hub assembly comprising a yoke configured to attach rotor blades thereto, a single Hooke's joint configured to attach to, and transmit forces between, a mast and the yoke, and a spherical bearing coupled between the yoke and the mast. Two pillow blocks couple the single Hooke's joint to the yoke. An adapter sleeve is attached to the pillow blocks and is positioned to surround the spherical bearing. The adapter sleeve extends between the single Hooke's joint and the mast. A hub lock extension is attached to the yoke. The hub lock extension is configured to receive a hub lock that prevents gimballing of the yoke when engaged.
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公开(公告)号：US11891167B2
公开(公告)日：2024-02-06
申请号：US17503736
申请日：2021-10-18
Applicant: Bell Textron Inc.
Inventor： Bryan Kenneth Baskin , Kyle Thomas Cravener , Andrew Ryan Maresh
CPC classification number: B64C27/322 , B64C29/0033
Abstract: A teeter flap lock for an aircraft may include at least one pair of diametrically positioned teeter flap lock plates extending from a rotor teetering hinge, spaced apart from a rotor mast of the aircraft. A teeter flap lock block is positioned about the rotor mast and is configured to fit between the teeter flap lock plates and the rotor mast. The teeter flap lock block fits between and contacts the teeter flap lock plates in an engaged position, and is movable between the engaged position and a disengaged position relative to the teeter flap lock plates. The teeter flap lock enables flapping of rotors coupled to the rotor mast via the teetering hinge when the teeter flap lock block is in the disengaged position and disables flapping of the rotors when the teeter flap lock block is in the engaged position.
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Patent Agency Ranking
公开(公告)号：US20210362837A1
公开(公告)日：2021-11-25
申请号：US16879114
申请日：2020-05-20
Applicant: Bell Textron Inc.
Inventor： Kyle Thomas Cravener , Andrew Ryan Maresh , Brady Garrett Atkins , Kynn J. Schulte , Troy Schank
Abstract: Embodiments are directed to a blade lock comprising a fold lock adapted to prevent folding of a rotor blade in a fold-lock position and to allow folding of the rotor blade in a pitch-lock position. The blade lock further comprises a pitch lock adapted to allow pitch movement of a rotor blade in a fold-lock position and to prevent pitch movement of the rotor blade in the pitch-lock position. A spring-loaded link pivotally connects both the fold lock and the pitch lock and is adapted to provide passive, overcenter locking in the fold-lock position. An actuator is coupled to the pitch lock and is adapted to move the pitch lock and the fold lock between the fold-lock and pitch-lock positions.
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公开(公告)号：US11745853B2
公开(公告)日：2023-09-05
申请号：US16821266
申请日：2020-03-17
Applicant: Bell Textron Inc.
Inventor： Andrew Ryan Maresh , Kyle Thomas Cravener
CPC classification number: B64C11/02 , B64C11/28 , B64C27/35 , B64C29/0033 , F16D3/26
Abstract: Embodiments are directed to a rotor hub assembly comprising a yoke configured to attach rotor blades thereto, a single Hooke's joint configured to attach to, and transmit forces between, a mast and the yoke, and a spherical bearing coupled between the yoke and the mast. Two pillow blocks couple the single Hooke's joint to the yoke. An adapter sleeve is attached to the pillow blocks and is positioned to surround the spherical bearing. The adapter sleeve extends between the single Hooke's joint and the mast. A hub lock extension is attached to the yoke. The hub lock extension is configured to receive a hub lock that prevents gimballing of the yoke when engaged.
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公开(公告)号：US20230118750A1
公开(公告)日：2023-04-20
申请号：US17503736
申请日：2021-10-18
Applicant: Bell Textron Inc.
Inventor： Bryan Kenneth Baskin , Kyle Thomas Cravener , Andrew Ryan Maresh
Abstract: A teeter flap lock for an aircraft may include at least one pair of diametrically positioned teeter flap lock plates extending from a rotor teetering hinge, spaced apart from a rotor mast of the aircraft. A teeter flap lock block is positioned about the rotor mast and is configured to fit between the teeter flap lock plates and the rotor mast. The teeter flap lock block fits between and contacts the teeter flap lock plates in an engaged position, and is movable between the engaged position and a disengaged position relative to the teeter flap lock plates. The teeter flap lock enables flapping of rotors coupled to the rotor mast via the teetering hinge when the teeter flap lock block is in the disengaged position and disables flapping of the rotors when the teeter flap lock block is in the engaged position.
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公开(公告)号：US11511848B2
公开(公告)日：2022-11-29
申请号：US16879114
申请日：2020-05-20
Applicant: Bell Textron Inc.
Inventor： Kyle Thomas Cravener , Andrew Ryan Maresh , Brady Garrett Atkins , Kynn J. Schulte , Troy Schank
Abstract: Embodiments are directed to a blade lock comprising a fold lock adapted to prevent folding of a rotor blade in a fold-lock position and to allow folding of the rotor blade in a pitch-lock position. The blade lock further comprises a pitch lock adapted to allow pitch movement of a rotor blade in a fold-lock position and to prevent pitch movement of the rotor blade in the pitch-lock position. A spring-loaded link pivotally connects both the fold lock and the pitch lock and is adapted to provide passive, overcenter locking in the fold-lock position. An actuator is coupled to the pitch lock and is adapted to move the pitch lock and the fold lock between the fold-lock and pitch-lock positions.
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公开(公告)号：US20210070432A1
公开(公告)日：2021-03-11
申请号：US16561516
申请日：2019-09-05
Applicant: Bell Textron Inc.
Inventor： Andrew Ryan Maresh , Chyausong Tzeng , Russell Mueller
Abstract: Embodiments are directed to a double Hooke's joint gimbal in a rotor system. An upper Hooke's joint has four arms extending radially outward to define first and second axes, and a lower Hooke's joint has four arms extending radially outward to define third and fourth axes. A pair of connectors couple the upper Hooke's joint and the lower Hooke's joint. A first set of bearings are positioned between arms on the upper and lower Hooke's joints and the connectors. The first set of bearings comprise an elastomer, such as elastomeric journal bearings. The upper Hooke's joint is coupled to a yoke and rotor blades by a driver assembly that allows rotor blade flapping. The lower Hooke's joint is coupled to and driven by a mast. A spherical bearing allows the upper Hooke's joint to move laterally along the mast.
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