Patents by Inventor Jason Choi
Jason Choi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240120118Abstract: A masking element with an opening is disposed on the side of a core support structure. A flow stack wall defines a plurality of inlets. At least one inlet aligns with the masking element opening when the flow stack is mated with the masking element. A flow control assembly within the flow stack is configured to restrict flow of fluid within the flow stack.Type: ApplicationFiled: October 6, 2023Publication date: April 11, 2024Inventors: Artem Aleshin, Joonhyung Choi, Jason R. Moore
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Publication number: 20240101250Abstract: An aircraft comprises a fuselage, a plurality of support structures coupled to the fuselage, and a first propeller and a second propeller connected to a motor and symmetrically distributed along the plurality of support structures, the first propeller configured to create a first thrust having a first horizontal force vector and the second propeller configured to create a second thrust having a second horizontal force vector. A summation of the first and second horizontal force vectors is substantially zero when the first thrust is substantially equal to the second thrust, and a first rotational axis of the first propeller and a second rotational axis of the second propeller are substantially coplanar with a vertical axis disposed between the first and second propeller. A movement of the aircraft is controlled by selectively increasing or decreasing a thrust of either the first propeller or the second propeller.Type: ApplicationFiled: April 26, 2023Publication date: March 28, 2024Inventors: Carlos Alexander Fenny, Jouyoung Jason Choi
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Patent number: 11724800Abstract: A vibration attenuator is configured for use on an aircraft rotor rotatable about a mast axis and has upper and lower weight assemblies, each comprising a weight with a center of gravity being a radial distance from the mast axis. The weight assemblies are configured for rotation together relative to the rotor at a selected angular rate about the mast axis, the weights being located on opposing sides of the mast axis. A first motor is configured for selective translation of one of the weight assemblies relative to the other weight assembly along the mast axis between a minimum-moment configuration, in which the centers of gravity of the weights revolve about the mast axis in the same plane, and a maximum-moment configuration, in which the centers of gravity of the weights revolve about the mast axis in different planes for producing a whirling moment about the mast axis.Type: GrantFiled: January 3, 2022Date of Patent: August 15, 2023Assignee: Textron Innovations Inc.Inventors: Frank Bradley Stamps, David Heverly, Michael R. Smith, Michael Scott Seifert, Thomas C Parham, Jr., Gary Miller, Jouyoung Jason Choi, Richard E. Rauber
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Patent number: 11697491Abstract: An electric reaction control system that can selectively expel a “burst” or “puff” of air to alter the orientation of the aircraft during flight. An aircraft incorporating ducting, an air compressor, an electric motor, and a plurality of nozzles can facilitate in-flight trajectory modifications. When an air burst is needed to provide thrust for the purposes of reaction control, nozzles are selectively opened and closed to provide roll, pitch, and yaw of the aircraft. The ERCS can facilitate an electric aircraft that would be very agile and very light, utilizing electric power, as opposed to jet power.Type: GrantFiled: September 30, 2020Date of Patent: July 11, 2023Inventors: Carlos Fenny, Sung Kim, Kip Campbell, Jouyoung Jason Choi
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Patent number: 11691723Abstract: A gimbaled rotor assembly for an aircraft. The gimbaled rotor assembly including a static mast; a spherical bearing comprising an inner component and an outer component pivotable relative to each other about a bearing focus, the inner component fixedly coupled to the static mast; a rotor hub rotatably coupled to the outer component, allowing for relative rotation of the rotor hub about a rotor axis and for pivoting together with the outer component about the bearing focus; and a primary hub spring coupling the outer component to the static mast and configured for opposing pivoting of the rotor hub about the bearing focus from a neutral position.Type: GrantFiled: May 4, 2021Date of Patent: July 4, 2023Assignee: Textron Innovations Inc.Inventors: Thomas C. Parham, Jr., Frank Bradley Stamps, Jouyoung Jason Choi, Albert Gerard Brand, Michael Scott Seifert, Richard E. Rauber, John E. Brunken, Jr.
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Patent number: 11685521Abstract: A vibration attenuator has a first spinner configured for rotation about a first axis and a first mass coupled to the first spinner for rotation therewith, the first mass being movable radially relative to the first axis between an inner position and an outer position. An actuator is coupled to the first mass for selectively controlling a radial location of the first mass relative to the axis, and a first motor is configured for driving the first spinner in rotation about the first axis.Type: GrantFiled: August 9, 2021Date of Patent: June 27, 2023Assignee: Textron Innovations Inc.Inventors: Jouyoung Jason Choi, David Heverly, Michael Seifert, Michael Smith, Frank Bradley Stamps, Thomas C. Parham, Jr., Amarjit Olenchery Kizhakkepat
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Patent number: 11660399Abstract: An injection system, including an injector having a dispensing mechanism configured to dispense a medicament, and a ready-to-use indicator. The ready-to-use indicator includes a controller configured to interact with the ready-to-use indicator and an audio and/or visual indicator, a temperature sensor, and a temperature analog having similar thermodynamic properties of the medicament. The temperature sensor is configured to detect a temperature of the temperature analog which represents the dynamic temperature of medicament as the medicament is heated or cooled. The temperature sensor is configured to communicate the detected temperature to the controller and to alert the controller when a preset temperature is reached. The ready-to-use indicator is configured to alert a user when the preset temperature is reached, signifying the medicament is thermally ready to be delivered by the dispensing mechanism. The audio and/or visual indicator is configured to display indicate one or more notifications to the user.Type: GrantFiled: August 4, 2020Date of Patent: May 30, 2023Assignee: West Pharmaceutical Services, Inc.Inventors: Tommy Gene Davis, Brian Klueppel, Paul Benson, Anthony G. Esposito, Jason Choi
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Patent number: 11649043Abstract: An aircraft comprises a fuselage, one or more support structures connected to the fuselage, one or more engines or motors disposed within or attached to the one or more support structures or the fuselage, and a distributed propulsion system. The distributed propulsion system comprising two or more propellers symmetrically distributed in an array along the one or more support structures with respect to a center of gravity of the aircraft and operably connected to the one or more engines or motors, wherein each propeller has a rotation direction within a tilted plane of rotation, and a summation of horizontal force vectors created by the tilted plane of rotation of all the propellers is substantially zero when all the propellers are creating a substantially equal thrust magnitude. Movement of the aircraft is controlled by selectively increasing or decreasing a thrust of at least one of the two or more propellers.Type: GrantFiled: August 19, 2021Date of Patent: May 16, 2023Assignee: TEXTRON INNOVATIONS INC.Inventors: Carlos Alexander Fenny, Jouyoung Jason Choi
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Patent number: 11577826Abstract: A vibration attenuator for a rotor of an aircraft has a first ring with an eccentric weight, a coaxial second ring with an eccentric weight, and a central ring coaxial with the first and second rings and located therebetween. A first post extends from the first ring toward the central ring and is received in a first arcuate groove formed on the central ring, whereas a second post extends from the second ring toward the central ring and is received in a second groove formed on the central ring. A motor is configured for driving the central ring in rotation about the axis relative to the motor. The grooves are equal in length, and a center of the first groove is located on an opposite side from a center of the second groove. Rotation of the central ring by the motor causes rotation of the first and second rings.Type: GrantFiled: March 8, 2022Date of Patent: February 14, 2023Assignee: Textron Innovations Inc.Inventors: David Heverly, Frank Bradley Stamps, Jouyoung Jason Choi, Michael R. Smith, Thomas C. Parham
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Publication number: 20220355924Abstract: A gimbaled rotor assembly for an aircraft. The gimbaled rotor assembly including a static mast; a spherical bearing comprising an inner component and an outer component pivotable relative to each other about a bearing focus, the inner component fixedly coupled to the static mast; a rotor hub rotatably coupled to the outer component, allowing for relative rotation of the rotor hub about a rotor axis and for pivoting together with the outer component about the bearing focus; and a primary hub spring coupling the outer component to the static mast and configured for opposing pivoting of the rotor hub about the bearing focus from a neutral position.Type: ApplicationFiled: May 4, 2021Publication date: November 10, 2022Applicant: Bell Textron Inc.Inventors: Thomas C. Parham, JR., Frank Bradley Stamps, Jouyoung Jason Choi, Albert Gerard Brand, Michael Scott Seifert, Richard E. Rauber, John E. Brunken, JR.
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Patent number: 11414183Abstract: In an implementation, the compound helicopter may include at least one rotary wing system, at least one first power generator and at least one second power generator. The at least one first power generator may rotate the at least one rotary wing blade to provide lift and a primary thrust force in a first direction to the helicopter. The at least one second power generator may be connected to the helicopter and may provide lift and a secondary thrust force in a direction that is independent of a direction of the primary thrust force and may also provide a secondary thrust force in a direction that is substantially parallel to the primary thrust force.Type: GrantFiled: August 14, 2019Date of Patent: August 16, 2022Assignee: TEXTRON INNOVATIONS INC.Inventors: Jouyoung Jason Choi, Carlos Alexandra Fenny
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Publication number: 20220194567Abstract: A vibration attenuator for a rotor of an aircraft has a first ring with an eccentric weight, a coaxial second ring with an eccentric weight, and a central ring coaxial with the first and second rings and located therebetween. A first post extends from the first ring toward the central ring and is received in a first arcuate groove formed on the central ring, whereas a second post extends from the second ring toward the central ring and is received in a second groove formed on the central ring. A motor is configured for driving the central ring in rotation about the axis relative to the motor. The grooves are equal in length, and a center of the first groove is located on an opposite side from a center of the second groove. Rotation of the central ring by the motor causes rotation of the first and second rings.Type: ApplicationFiled: March 8, 2022Publication date: June 23, 2022Applicant: Textron Innovations Inc.Inventors: David Heverly, Frank Bradley Stamps, Jouyoung Jason Choi, Michael R. Smith, Thomas C. Parham
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Publication number: 20220126989Abstract: A vibration attenuator is configured for use on an aircraft rotor rotatable about a mast axis and has upper and lower weight assemblies, each comprising a weight with a center of gravity being a radial distance from the mast axis. The weight assemblies are configured for rotation together relative to the rotor at a selected angular rate about the mast axis, the weights being located on opposing sides of the mast axis. A first motor is configured for selective translation of one of the weight assemblies relative to the other weight assembly along the mast axis between a minimum-moment configuration, in which the centers of gravity of the weights revolve about the mast axis in the same plane, and a maximum-moment configuration, in which the centers of gravity of the weights revolve about the mast axis in different planes for producing a whirling moment about the mast axis.Type: ApplicationFiled: January 3, 2022Publication date: April 28, 2022Applicant: Textron Innovations Inc.Inventors: Frank Bradley Stamps, David Heverly, Michael R. Smith, Michael Scott Seifert, Thomas C. Parham, JR., Gary Miller, Jouyoung Jason Choi, Richard E. Rauber
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Publication number: 20220095045Abstract: An in-car headphone system may include a first headset associated with a vehicle occupant and configured to transmit audio signals to an associated occupant; at least one interior microphone configured to receive an interior audio signal from within a vehicle cabin; at least one exterior microphone configured to receive an exterior audio signal acquired from outside of the vehicle; and a processor configured to receive at least one of the interior audio signal from the at least one interior microphone and the exterior audio signal from the at least one exterior microphone; determine whether at least one of the interior audio signal and exterior audio signal include a trigger command or an alert signal; and transmit the audio signal that includes the trigger command or alert signal to the first headset in response to the audio signals including a trigger command or an alert signal.Type: ApplicationFiled: January 2, 2020Publication date: March 24, 2022Applicant: HARMAN INTERNATIONAL INDUSTRIES, INCORPORATEDInventors: Riley WINTON, Christopher LUDWIG, Jason CHOI, Philippe DREILING
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Patent number: 11267561Abstract: A vibration attenuator for a rotor of an aircraft has a track housing adapted for rotation relative to the rotor and configured for rotation at a second angular velocity greater than a first angular velocity of the rotor. A track is located within the track housing and has a reaction surface, a pair of weights being configured for movement within the track and in contact with the reaction surface. A stop assembly has a pair of stops spaced 180 degrees apart, the stops separating the weights from each other, and each weight being allowed to travel within the track between the stops. A motor rotates the track housing relative to the rotor. The weights are free to travel relative to each other between a minimum-force configuration, in which the weights are positioned 180 degrees apart, and a maximum-force configuration, in which both weights are adjacent one of the stops.Type: GrantFiled: October 25, 2019Date of Patent: March 8, 2022Assignee: Textron Innovations Inc.Inventors: David Heverly, Frank Bradley Stamps, Jouyoung Jason Choi, Michael R. Smith, Thomas C. Parham
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Patent number: 11214361Abstract: A vibration attenuator for an aircraft has first and second coaxial spinners configured for rotation about a mast axis and relative to a rotor. Upper and lower weights of each spinner are spaced radially from the axis and positioned 180 degrees from each other about the axis. The weights of each spinner are spaced from each other a distance parallel to the mast axis, each weight rotating about the mast axis in a different plane. The spinners rotate together relative to the rotor at a selected angular rate and are selectively rotatable relative to each other between a minimum-moment configuration, in which the upper weight of each spinner is angularly aligned with the lower weight of the other spinner, and a maximum-moment configuration, in which the upper weights are angularly aligned and the lower weights are angularly aligned, producing a whirling moment about the mast axis as the spinners rotate.Type: GrantFiled: November 21, 2018Date of Patent: January 4, 2022Assignee: Textron Innovations Inc.Inventors: Frank Bradley Stamps, David Heverly, Michael R. Smith, Michael Scott Seifert, Thomas C. Parham, Jr., Gary Miller, Jouyoung Jason Choi, Richard E. Rauber
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Patent number: 11207473Abstract: A compliance monitoring system is provided for an injection device having an unused state and a used state. The system includes one or more radio frequency tags attached to a surface of the injection device and a portable monitoring accessory that includes a housing, a radio frequency antenna disposed within the housing, a wireless transmitter module disposed within the housing, and a processing circuit disposed within the housing. The processing circuit is configured to receive, via the radio frequency antenna, a first signal from the one or more radio frequency tags via a radio frequency communication protocol. The processing circuit is also configured to transmit, via the wireless transmitter, a second signal to a mobile device via a wireless communication protocol different from the radio frequency communication protocol. Both of the first signal and the second signal include state information of the injection device.Type: GrantFiled: January 12, 2018Date of Patent: December 28, 2021Assignee: West Pharmaceutical Services, Inc.Inventors: Jason Choi, Anthony G. Esposito, Paul Benson
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Publication number: 20210380230Abstract: An aircraft comprises a fuselage, one or more support structures connected to the fuselage, one or more engines or motors disposed within or attached to the one or more support structures or the fuselage, and a distributed propulsion system. The distributed propulsion system comprising two or more propellers symmetrically distributed in an array along the one or more support structures with respect to a center of gravity of the aircraft and operably connected to the one or more engines or motors, wherein each propeller has a rotation direction within a tilted plane of rotation, and a summation of horizontal force vectors created by the tilted plane of rotation of all the propellers is substantially zero when all the propellers are creating a substantially equal thrust magnitude. Movement of the aircraft is controlled by selectively increasing or decreasing a thrust of at least one of the two or more propellers.Type: ApplicationFiled: August 19, 2021Publication date: December 9, 2021Inventors: Carlos Alexander Fenny, Jouyoung Jason Choi
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Publication number: 20210362842Abstract: A vibration attenuation system as shown and described.Type: ApplicationFiled: August 9, 2021Publication date: November 25, 2021Applicant: Textron Innovations Inc.Inventors: Jouyoung Jason Choi, David Heverly, Michael Seifert, Michael Smith, Frank Bradley Stamps, Thomas C. Parham, JR., Amarjit Olenchery Kizhakkepat
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Patent number: 11173521Abstract: A vibration attenuator for a rotor is rotatable about a mast axis and has a frame configured for rotation about the mast axis relative to the rotor. A first mass is axially translatable in a first direction relative to the frame parallel to a first axis, and a first biasing force urges the first mass toward a first-mass rest position in which the first mass is symmetric about the mast axis. A second mass is axially translatable in a second direction relative to the frame parallel to a second axis, and a second biasing force urges the second mass toward a second-mass rest position in which the second mass is symmetric about the mast axis. A selected first or second mass moves radially outward from the rest position to oppose vibrations in the rotor.Type: GrantFiled: February 25, 2019Date of Patent: November 16, 2021Assignee: Textron Innovations Inc.Inventors: David Heverly, Frank Bradley Stamps, Gary Miller, Richard E. Rauber, Thomas C. Parham, Jr., Michael R. Smith, Michael Scott Seifert, Jouyoung Jason Choi