Patents by Inventor Harry McFarland Jarrett, JR.
Harry McFarland Jarrett, JR. 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: 10519797Abstract: A turbine engine is provided. The turbine engine includes a plurality of first stator vanes, a plurality of second stator vanes, and a pitch adjustment system coupled to the first stator vanes and the second stator vanes. The pitch adjustment system includes a pivot shaft, a first linkage, and a second linkage. The pivot shaft has a first side and a second side opposite the first side. The first linkage is coupled to the first stator vanes on the first side of the pivot shaft. The second linkage coupled to the second stator vanes on the second side of the pivot shaft.Type: GrantFiled: June 27, 2016Date of Patent: December 31, 2019Assignee: General Electric CompanyInventors: Aaron David Williamson, Harry McFarland Jarrett, Jr.
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Patent number: 10047765Abstract: A bushing for use in a stator vane assembly that includes an annular body that extends between a first end and a second end. The bushing is configured to be removable from the stator vane assembly without disassembly of the stator vane assembly.Type: GrantFiled: December 3, 2014Date of Patent: August 14, 2018Assignee: General Electric CompanyInventors: Aaron David Williamson, Harry McFarland Jarrett, Jr.
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Publication number: 20170370243Abstract: A turbine engine is provided. The turbine engine includes a plurality of first stator vanes, a plurality of second stator vanes, and a pitch adjustment system coupled to the first stator vanes and the second stator vanes. The pitch adjustment system includes a pivot shaft, a first linkage, and a second linkage. The pivot shaft has a first side and a second side opposite the first side. The first linkage is coupled to the first stator vanes on the first side of the pivot shaft. The second linkage coupled to the second stator vanes on the second side of the pivot shaft.Type: ApplicationFiled: June 27, 2016Publication date: December 28, 2017Inventors: Aaron David Williamson, Harry McFarland Jarrett, JR.
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Patent number: 9695854Abstract: An adjustable and lockable turnbuckle may include an elongated body having internal threading within a first end thereof. The turnbuckle may include a first extension rod having external threading configured to mate with the internal threading at the first end of the elongated body. The turnbuckle may include a first jam nut having internal threading and a skirt. The internal threading of the first jam nut may be configured to mate with the external threading of the first extension rod to tighten the first jam nut against the first end of the elongated body so that the skirt of the first jam nut is positionable about the first end of the elongated body. A first aperture may extend through the elongated body, the first extension rod, and the skirt of the first jam nut. Moreover, a first pin may be positioned within the first aperture.Type: GrantFiled: August 15, 2013Date of Patent: July 4, 2017Assignee: General Electric CompanyInventors: Michael James Gutta, Mark Joseph Pombles, Harry McFarland Jarrett, Jr.
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Patent number: 9546559Abstract: A lock link for locking variable stage stator vanes in a compressor includes a substantially planar body portion having a slot formed on one edge and a narrow neck portion extending away from an opposite edge, the narrow neck portion adapted to seat in a corresponding slot in an adjacent lock link attached to an adjacent vane; and a profiled opening in the substantially planar body portion adapted to receive a key provided on a vane stem to prevent relative rotation between the vane and the lock link.Type: GrantFiled: October 8, 2013Date of Patent: January 17, 2017Assignee: General Electric CompanyInventors: Harry McFarland Jarrett, Jr., Jayakrishna Velampati, Andrew John Lammas, Laurie Ann Cribley, Saurabh Deshmukh
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Publication number: 20160160675Abstract: A bushing for use in a stator vane assembly that includes an annular body that extends between a first end and a second end. The bushing is configured to be removable from the stator vane assembly without disassembly of the stator vane assembly.Type: ApplicationFiled: December 3, 2014Publication date: June 9, 2016Inventors: Aaron David Williamson, Harry McFarland Jarrett, JR.
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Publication number: 20150098813Abstract: A lock link for locking variable stage stator vanes in a compressor includes a substantially planar body portion having a slot formed on one edge and a narrow neck portion extending away from an opposite edge, the narrow neck portion adapted to seat in a corresponding slot in an adjacent lock link attached to an adjacent vane; and a profiled opening in the substantially planar body portion adapted to receive a key provided on a vane stem to prevent relative rotation between the vane and the lock link.Type: ApplicationFiled: October 8, 2013Publication date: April 9, 2015Applicant: General Electric CompanyInventors: Harry McFarland JARRETT, JR., Jayakrishna Velampati, Andrew John Lammas, Laurie Ann Cribley, Saurabh Deshmukh
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Publication number: 20150050122Abstract: An adjustable and lockable turnbuckle is disclosed herein. The turnbuckle may include an elongated body having internal threading within a first end thereof. The turnbuckle may include a first extension rod having external threading configured to mate with the internal threading at the first end of the elongated body. The turnbuckle may include a first jam nut having internal threading and a skirt. The internal threading of the first jam nut may be configured to mate with the external threading of the first extension rod to tighten the first jam nut against the first end of the elongated body so that the skirt of the first jam nut is positionable about the first end of the elongated body. A first aperture may extend through the elongated body, the first extension rod, and the skirt of the first jam nut. Moreover, a first pin may be positioned within the first aperture.Type: ApplicationFiled: August 15, 2013Publication date: February 19, 2015Applicant: General Electric CompanyInventors: Michael James Gutta, Mark Joseph Pombles, Harry McFarland Jarrett, JR.
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Publication number: 20140205424Abstract: Embodiments of the present application include a variable stator vanes control mechanism for a gas turbine engine. The control mechanism includes a moveable actuation rod in operative communication with a first unison ring such that movement of the actuation rod drives the first unison ring. The control mechanism also includes a bell crank mechanism in operative communication with the first unison ring and a second unison ring such that movement of the first unison ring drives the second unison ring.Type: ApplicationFiled: August 29, 2012Publication date: July 24, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Jayakrishna Velampati, Harry McFarland Jarrett, JR., Wayne R. Bowen, Padmapriya Vijayakumar, Sasi Kumar Tippabhotla
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Patent number: 8714916Abstract: A variable vane assembly for a compressor having a plurality of vanes is disclosed. The variable vane assembly may generally include a synchronizing ring and a plurality of attachment studs secured to the synchronizing ring. The variable vane assembly may also include a plurality of lever arms, with each lever arm having a first end and a second end. The first end of each lever arm may be attached to one of the vanes. Additionally, a plurality of rotational attachment devices may be configured to rotatably couple the second end of each lever arm to one of the attachment studs so as to define a rotational interface therebetween. Further, each of the attachments studs may be rigidly attached to one of the rotational attachment devices at the rotational interface such that there is substantially no relative radial and circumferential sliding motion between the synchronizing ring and the plurality of lever arms during rotation of the synchronizing ring.Type: GrantFiled: September 28, 2010Date of Patent: May 6, 2014Assignee: General Electric CompanyInventors: Harry McFarland Jarrett, Jr., Jayakrishna Velampati, Andrew John Lammas
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Patent number: 8668444Abstract: An attachment stud for a variable vane assembly is disclosed. The attachment stud may generally include a bottom segment, a middle segment, a top segment and a shoulder segment. The bottom segment may generally have a shape and configuration adapted to be secured to a synchronizing ring of the variable vane assembly. The middle segment may generally have a shape and configuration adapted to receive a rotational attachment device of the variable vane assembly. The shoulder segment may be disposed between the bottom segment and the middle segment. The top segment may generally have a shape and configuration adapted to receive a retaining device configured to rigidly attach the rotational attachment device to the attachment stud.Type: GrantFiled: September 28, 2010Date of Patent: March 11, 2014Assignee: General Electric CompanyInventors: Harry McFarland Jarrett, Jr., Andrew John Lammas, Michael Christopher Howard
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Publication number: 20140064911Abstract: Embodiments of the present application include a variable stator vanes control mechanism for a gas turbine engine. The control mechanism includes a moveable actuation rod in operative communication with a first unison ring such that movement of the actuation rod drives the first unison ring. The control mechanism also includes a linkage in operative communication with the first unison ring and a second unison ring such that movement of the first unison ring drives the second unison ring.Type: ApplicationFiled: August 29, 2012Publication date: March 6, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Harry McFarland Jarrett, JR., Jayakrishna Velampati, Andrew John Lammas
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Publication number: 20130287550Abstract: A compressor of a gas turbine system includes at least one inlet row having a plurality of inlet guide vanes. Also included is at least one stator row having a plurality of stator vanes. Further included is a first actuation mechanism operably connected to the at least one stator row, wherein the first actuation mechanism is configured to positionally manipulate the at least one stator row. Yet further included is a second actuation mechanism operably connected to the at least one stator row, wherein the second actuation mechanism is configured to positionally manipulate the at least one stator row.Type: ApplicationFiled: April 25, 2012Publication date: October 31, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Brian Allen Rittenhouse, Harry McFarland Jarrett, JR., Daniel Richard Waugh
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Publication number: 20120076641Abstract: A variable vane assembly for a compressor having a plurality of vanes is disclosed. The variable vane assembly may generally include a synchronizing ring and a plurality of attachment studs secured to the synchronizing ring. The variable vane assembly may also include a plurality of lever arms, with each lever arm having a first end and a second end. The first end of each lever arm may be attached to one of the vanes. Additionally, a plurality of rotational attachment devices may be configured to rotatably couple the second end of each lever arm to one of the attachment studs so as to define a rotational interface therebetween. Further, each of the attachments studs may be rigidly attached to one of the rotational attachment devices at the rotational interface such that there is substantially no relative radial and circumferential sliding motion between the synchronizing ring and the plurality of lever arms during rotation of the synchronizing ring.Type: ApplicationFiled: September 28, 2010Publication date: March 29, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Harry McFarland Jarrett, JR., Jayakrishna Velampati, Andrew John Lammas
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Publication number: 20120076658Abstract: An attachment stud for a variable vane assembly is disclosed. The attachment stud may generally include a bottom segment, a middle segment, a top segment and a shoulder segment. The bottom segment may generally have a shape and configuration adapted to be secured to a synchronizing ring of the variable vane assembly. The middle segment may generally have a shape and configuration adapted to receive a rotational attachment device of the variable vane assembly. The shoulder segment may be disposed between the bottom segment and the middle segment. The top segment may generally have a shape and configuration adapted to receive a retaining device configured to rigidly attach the rotational attachment device to the attachment stud.Type: ApplicationFiled: September 28, 2010Publication date: March 29, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Harry McFarland Jarrett, JR., Andrew John Lammas, Michael Christopher Howard