Patents by Inventor Chyau-Song Tzeng
Chyau-Song Tzeng 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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Patent number: 11242158Abstract: A rotor assembly for use in an aircraft comprising has a rotor hub, a spinner structure comprising a spinner opening, and a rotor blade received through the spinner opening. The rotor blade has a rotor root located proximate to the rotor hub. The rotor assembly also has a motive fairing face that at least partially rests along the rotor hub.Type: GrantFiled: January 15, 2019Date of Patent: February 8, 2022Assignee: Textron Innovations Inc.Inventors: Christopher Edward Foskey, Chyau-Song Tzeng
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Patent number: 11235858Abstract: A mechanism for folding a rotor blade that is rotatably coupled to a blade cuff about a blade-fold axis between an extended position and a folded position. The mechanism includes a swash plate configured to translate relative to a mast, a pitch link rotatably coupled to the swash plate, a pitch horn rotatably coupled to the pitch link, a crank coupled to the pitch horn, and a link rotatably coupled to the crank and rotatably coupled to the rotor blade. The pitch horn and the crank being configured to commonly rotate relative to the blade cuff about a crank axis in response to translation of the swash plate, wherein the crank axis passes through the blade cuff.Type: GrantFiled: July 13, 2018Date of Patent: February 1, 2022Assignee: Textron Innovations Inc.Inventors: Troy Cyril Schank, Andrew Ryan Maresh, Chyau-Song Tzeng
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Patent number: 10946955Abstract: A propulsion assembly for a rotorcraft includes a mast and a proprotor hub assembly coupled to the mast and having a gimballing degree of freedom relative to the mast. The proprotor hub assembly includes a hook receiver. The propulsion assembly includes a gimbal lock positioned about the mast. The gimbal lock includes a locking ring and a gimbal lock hook. The gimbal lock is movable between a disengaged position and an engaged position relative to the proprotor hub assembly. The gimbal lock enables the gimballing degree of freedom in the disengaged position and disables the gimballing degree of freedom in the engaged position. The gimbal lock hook is hooked to the hook receiver in the engaged position to secure the locking ring to the proprotor hub assembly.Type: GrantFiled: July 31, 2018Date of Patent: March 16, 2021Assignee: Textron Innovations Inc.Inventors: Troy Cyril Schank, Andrew Ryan Maresh, Chyau-Song Tzeng
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Patent number: 10933985Abstract: A propulsion assembly for a rotorcraft includes a mast and a proprotor hub assembly coupled to the mast and having a gimballing degree of freedom relative to the mast. The propulsion assembly includes a gimbal lock assembly positioned about the mast and including a plurality of radially outwardly extending and circumferentially distributed rollers. The gimbal lock assembly is movable between a disengaged position and an engaged position relative to the proprotor hub assembly. In the disengaged position, the gimbal lock assembly enables the gimballing degree of freedom. In the engaged position, the rollers of the gimbal lock assembly contact the proprotor hub assembly to disable the gimballing degree.Type: GrantFiled: July 31, 2018Date of Patent: March 2, 2021Assignee: Textron Innovations Inc.Inventors: Troy Cyril Schank, Andrew Ryan Maresh, Chyau-Song Tzeng
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Publication number: 20200223552Abstract: A rotor assembly for use in an aircraft comprising has a rotor hub, a spinner structure comprising a spinner opening, and a rotor blade received through the spinner opening. The rotor blade has a rotor root located proximate to the rotor hub. The rotor assembly also has a motive fairing face that at least partially rests along the rotor hub.Type: ApplicationFiled: January 15, 2019Publication date: July 16, 2020Applicant: Bell Helicopter Textron Inc.Inventors: Christopher Edward Foskey, Chyau-Song Tzeng
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Patent number: 10526068Abstract: A mechanism for transitioning a tiltrotor aircraft between rotary and non rotary flight modes. The mechanism includes a gimbal lock positioned about a mast that is operable to selectively enable and disable a gimballing degree of freedom of a rotor assembly relative to the mast. A blade stop assembly, positioned about the mast, includes a plurality of arms having a radially contracted orientation and a radially extended orientation. A blade lock assembly is operably associated with each rotor blade assembly. Each blade lock assembly is operable to selectively enable and disable a folding degree of freedom and a pitching degree of freedom of the respective rotor blade assembly. A swash plate is operable to change the pitch of the rotor blade assemblies in the rotary flight mode and fold the rotor blade assemblies in the non rotary flight mode.Type: GrantFiled: February 9, 2017Date of Patent: January 7, 2020Assignee: Bell Textron Inc.Inventors: Troy Cyril Schank, Carlos Alexander Fenny, Andrew Maresh, Chyau-Song Tzeng
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Patent number: 10336447Abstract: A gimbal lock mechanism for a rotor hub can include a cam member having a cuff lock lobe and a gimbal lock lobe. The cam member is configured so that rotation can cause the first cuff lobe to become adjacent to the root end of the rotor blade and at the same time causes the gimbal lock lobe to become adjacent to a gimbal so as to inhibit gimbaling of the gimbal. A first moveable pin can be located on the root end portion of the rotor blade and inserted into the cuff lock lobe to prevent pitch change of the rotor blade.Type: GrantFiled: December 2, 2015Date of Patent: July 2, 2019Assignee: Bell Helicopter Textron Inc.Inventors: Chyau-Song Tzeng, Troy Cyril Schank
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Publication number: 20190047692Abstract: A propulsion assembly for a rotorcraft includes a mast and a proprotor hub assembly coupled to the mast and having a gimballing degree of freedom relative to the mast. The proprotor hub assembly includes a hook receiver. The propulsion assembly includes a gimbal lock positioned about the mast. The gimbal lock includes a locking ring and a gimbal lock hook. The gimbal lock is movable between a disengaged position and an engaged position relative to the proprotor hub assembly. The gimbal lock enables the gimballing degree of freedom in the disengaged position and disables the gimballing degree of freedom in the engaged position. The gimbal lock hook is hooked to the hook receiver in the engaged position to secure the locking ring to the proprotor hub assembly.Type: ApplicationFiled: July 31, 2018Publication date: February 14, 2019Applicant: Bell Helicopter Textron Inc.Inventors: Troy Cyril Schank, Andrew Ryan Maresh, Chyau-Song Tzeng
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Publication number: 20190047691Abstract: A propulsion assembly for a rotorcraft includes a mast and a proprotor hub assembly coupled to the mast and having a gimballing degree of freedom relative to the mast. The propulsion assembly includes a gimbal lock assembly positioned about the mast and including a plurality of radially outwardly extending and circumferentially distributed rollers. The gimbal lock assembly is movable between a disengaged position and an engaged position relative to the proprotor hub assembly. In the disengaged position, the gimbal lock assembly enables the gimballing degree of freedom. In the engaged position, the rollers of the gimbal lock assembly contact the proprotor hub assembly to disable the gimballing degree.Type: ApplicationFiled: July 31, 2018Publication date: February 14, 2019Applicant: Bell Helicopter Textron Inc.Inventors: Troy Cyril Schank, Andrew Ryan Maresh, Chyau-Song Tzeng
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Publication number: 20190016441Abstract: A mechanism for folding a rotor blade that is rotatably coupled to a blade cuff about a blade-fold axis between an extended position and a folded position. The mechanism includes a swash plate configured to translate relative to a mast, a pitch link rotatably coupled to the swash plate, a pitch horn rotatably coupled to the pitch link, a crank coupled to the pitch horn, and a link rotatably coupled to the crank and rotatably coupled to the rotor blade. The pitch horn and the crank being configured to commonly rotate relative to the blade cuff about a crank axis in response to translation of the swash plate, wherein the crank axis passes through the blade cuff.Type: ApplicationFiled: July 13, 2018Publication date: January 17, 2019Applicant: Bell Helicopter Textron Inc.Inventors: Troy Cyril Schank, Andrew Ryan Maresh, Chyau-Song Tzeng
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Publication number: 20170144746Abstract: A mechanism for transitioning a tiltrotor aircraft between rotary and non rotary flight modes. The mechanism includes a gimbal lock positioned about a mast that is operable to selectively enable and disable a gimballing degree of freedom of a rotor assembly relative to the mast. A blade stop assembly, positioned about the mast, includes a plurality of arms having a radially contracted orientation and a radially extended orientation. A blade lock assembly is operably associated with each rotor blade assembly. Each blade lock assembly is operable to selectively enable and disable a folding degree of freedom and a pitching degree of freedom of the respective rotor blade assembly. A swash plate is operable to change the pitch of the rotor blade assemblies in the rotary flight mode and fold the rotor blade assemblies in the non rotary flight mode.Type: ApplicationFiled: February 9, 2017Publication date: May 25, 2017Applicant: Bell Helicopter Textron Inc.Inventors: Troy Cyril Schank, Carlos Alexander Fenny, Andrew Maresh, Chyau-Song Tzeng
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Publication number: 20160152329Abstract: A gimbal lock mechanism for a rotor hub can include a cam member having a cuff lock lobe and a gimbal lock lobe. The cam member is configured so that rotation can cause the first cuff lobe to become adjacent to the root end of the rotor blade and at the same time causes the gimbal lock lobe to become adjacent to a gimbal so as to inhibit gimbaling of the gimbal. A first moveable pin can be located on the root end portion of the rotor blade and inserted into the cuff lock lobe to prevent pitch change of the rotor blade.Type: ApplicationFiled: December 2, 2015Publication date: June 2, 2016Inventors: Chyau-Song Tzeng, Troy Cyril Schank