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公开(公告)号：US11260605B2
公开(公告)日：2022-03-01
申请号：US16748308
申请日：2020-01-21
Applicant: Goodrich Corporation
Inventor： Raghu Iyer , Joyel M. Schaefer , Brayton Reed
Abstract: A process for forming a flexible composite driveshaft includes providing a mandrel having a rigid region and a compressible region, applying fiber tape to the mandrel using automated fiber placement with in-situ laser curing in the rigid region and without in-situ laser curing the compressible region, and compressing the fiber tape and compressible material in the compressible region to form diaphragms that extend radially outward to a diameter that is at least twice the size of a diameter of the composite driveshaft in the rigid region.
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公开(公告)号：US11248897B2
公开(公告)日：2022-02-15
申请号：US16280674
申请日：2019-02-20
Applicant: Goodrich Corporation
Inventor： Raghu Iyer , Kyle Johnson
Abstract: A method for sensing misalignment of a rotating shaft includes rotating the shaft. A distance from a sensor on the shaft to a first rim of a first coupling mounted to an end of the shaft is sensed as the shaft rotates. A change in the distance from the first sensor to the first rim of the first coupling is determined based on the sensed distance. An angle of the first coupling based on the change in the distance from the first sensor to the first rim of the first coupling during one revolution of the shaft is determined based on the sensed change in the distance from the first sensor to the first rim. An angle of the shaft is determined based on the sensed distance from the first sensor to the first rim of the first coupling representing the sensed change in the distance from the first sensor to the first rim.
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公开(公告)号：US20190085890A1
公开(公告)日：2019-03-21
申请号：US15711636
申请日：2017-09-21
Applicant: GOODRICH CORPORATION
Inventor： Raghu Iyer , Brayton Reed
Abstract: A flexible shaft includes first and second shaft portions, first and second angular displacement couplings, and an axial displacement coupling generally extending and centered to a rotational axis. The first shaft portion extends between the first angular displacement coupling and the axial displacement coupling. The second shaft portion extends between the axial displacement coupling and the second angular displacement coupling. The axial displacement coupling includes an outer periphery, first wall attached to and extending radially between the first shaft portion and the periphery, and a second wall attached to and extending radially between the second shaft portion and the periphery. The first and second walls are resiliently flexible to facilitate axial displacement between the first and second shaft portions.
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公开(公告)号：US20220143933A1
公开(公告)日：2022-05-12
申请号：US17586510
申请日：2022-01-27
Applicant: Goodrich Corporation
Inventor： Raghu Iyer , Joyel M. Schaefer , Brayton Reed
Abstract: A process for forming a flexible composite driveshaft includes providing a mandrel having a rigid region and a compressible region, applying fiber tape to the mandrel using automated fiber placement with in-situ laser curing in the rigid region and without in-situ laser curing the compressible region, and compressing the fiber tape and compressible material in the compressible region to form diaphragms that extend radially outward to a diameter that is at least twice the size of a diameter of the composite driveshaft in the rigid region.
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公开(公告)号：US10648501B2
公开(公告)日：2020-05-12
申请号：US15711636
申请日：2017-09-21
Applicant: GOODRICH CORPORATION
Inventor： Raghu Iyer , Brayton Reed
Abstract: A flexible shaft includes first and second shaft portions, first and second angular displacement couplings, and an axial displacement coupling generally extending and centered to a rotational axis. The first shaft portion extends between the first angular displacement coupling and the axial displacement coupling. The second shaft portion extends between the axial displacement coupling and the second angular displacement coupling. The axial displacement coupling includes an outer periphery, first wall attached to and extending radially between the first shaft portion and the periphery, and a second wall attached to and extending radially between the second shaft portion and the periphery. The first and second walls are resiliently flexible to facilitate axial displacement between the first and second shaft portions.
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Patent Agency Ranking
公开(公告)号：US20180023631A1
公开(公告)日：2018-01-25
申请号：US15214152
申请日：2016-07-19
Applicant: Goodrich Corporation
Inventor： Jeffrey Mathis , Raghu Iyer
Abstract: A flexible coupling includes a flexible diaphragm body having a first end and a second end. A member is fixed to the first end of the flexible diaphragm body. A splined member is fixed to the second end of the flexible diaphragm body. The splined member is configured to shift relative to a rotatable member rotatably fixed thereto in response to axial displacement of rotatable members interconnected by the flexible coupling. The ratio of inner diameter to the outer diameter is selected to allow for packaging the flexible coupling in a confined space.
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公开(公告)号：US20210221072A1
公开(公告)日：2021-07-22
申请号：US16748308
申请日：2020-01-21
Applicant: Goodrich Corporation
Inventor： Raghu Iyer , Joyel M. Schaefer , Brayton Reed
Abstract: A process for forming a flexible composite driveshaft includes providing a mandrel having a rigid region and a compressible region, applying fiber tape to the mandrel using automated fiber placement with in-situ laser curing in the rigid region and without in-situ laser curing the compressible region, and compressing the fiber tape and compressible material in the compressible region to form diaphragms that extend radially outward to a diameter that is at least twice the size of a diameter of the composite driveshaft in the rigid region.
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公开(公告)号：US20190264750A1
公开(公告)日：2019-08-29
申请号：US15903488
申请日：2018-02-23
Applicant: Goodrich Corporation
Inventor： Raghu Iyer , Joshua Larson
Abstract: A coupling includes a diaphragm assembly, a sleeve, a stud, and a ball bearing system. The diaphragm assembly includes a first end, a second end, and an opening extending axially through the diaphragm assembly with the diaphragm assembly also including a first annular diaphragm pair. The sleeve extends into the opening and has a bore. The stud extends at least partially within the bore of the sleeve and within the opening. The ball bearing system is concentric with and radially between the sleeve and the stud with the ball bearing having an outer race adjacent to the sleeve, an inner race adjacent to the stud, and at least two rows of ball therebetween with the outer race having an arced shape when viewed in a circumferential direction to allow for axial movement of the at least two rows of ball bearings relative to the outer race.
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公开(公告)号：US20190195708A1
公开(公告)日：2019-06-27
申请号：US15853583
申请日：2017-12-22
Applicant: Goodrich Corporation
Inventor： Raghu Iyer , Timothy H. Barber
Abstract: A flexible drive shaft test arrangement includes a drive end piece arranged along a rotation axis, a driven end piece axially offset from the drive end piece along the rotation axis, and a shell. The shell connects the drive end piece to the driven end piece. The drive end piece end is offset in rotation about the driven end piece to internally load a flexible drive shaft disposed within the shell with torsion. Test stands and methods for testing flexible drive shafts are also disclosed.
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公开(公告)号：US12220881B2
公开(公告)日：2025-02-11
申请号：US17586510
申请日：2022-01-27
Applicant: Goodrich Corporation
Inventor： Raghu Iyer , Joyel M. Schaefer , Brayton Reed
Abstract: A flexible composite driveshaft formed by automated fiber placement includes a first region extending longitudinally about an axis and having a substantially constant first diameter and a second region adjacent to the first region. The second region includes a first diaphragm extending radially outward from the first region about a circumference of the driveshaft and a second diaphragm extending radially outward from the first region about the circumference of the driveshaft. The first and second regions each include a plurality of strips of unidirectional fiber tape, wherein the plurality of strips is arranged in a plurality of stacked layers and wherein a first portion of the plurality of strips is oriented in a circumferential direction. At least one of the circumferentially-oriented strips of unidirectional fiber tape is positioned between the first and second diaphragms and comprises a plurality of folds formed about the circumference of the driveshaft.
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