Patents by Inventor Spencer A. Kareff
Spencer A. Kareff 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: 10584597Abstract: A damper pin for damping adjacent turbine blades coupled to a rotor shaft includes an elongated body having a center portion that is disposed between a first end portion and a second end portion. The first end portion, center portion and second end portion at least partially define a generally arcuate top portion of the elongated body. At least a portion of the top portion may be configured to contact with a groove that is defined between the adjacent turbine blades. The first end portion and the second end portion have substantially semi-cylindrical cross sectional shapes and the center portion has a cylindrical cross sectional shape. A bottom portion of the elongated body diverges radially outwardly from the first end portion to the center portion and from the second end portion to the center portion.Type: GrantFiled: September 3, 2015Date of Patent: March 10, 2020Assignee: General Electric CompanyInventors: Spencer A. Kareff, Sheo Narain Giri
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Patent number: 10472975Abstract: A damper pin for damping adjacent turbine blades coupled to a rotor disk comprises a first elongated body having a center portion disposed between a first end portion and a second end portion. The first end portion, center portion and second end portion define a generally arcuate top portion of the first elongated body. The first elongated body defines a slot that extends axially therethrough. The damper pin further includes a second elongated body having a generally arcuate top portion. The second elongated body is at least partially disposed within the slot and is slideably engaged in an axial direction with the first elongated body.Type: GrantFiled: September 3, 2015Date of Patent: November 12, 2019Assignee: General Electric CompanyInventors: Spencer A. Kareff, Poorna Krishnakumar, Kevin Lee Worley, Christopher Michael Penny, Stephen Paul Wassynger
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Patent number: 10443408Abstract: A damper pin for damping adjacent turbine blades coupled to a rotor shaft includes a first end portion that is axially aligned with and axially spaced from a second end portion and a retention pin that is coaxially aligned with and disposed between the first end portion and the second end portion. The retention pin couples the first end portion to the second end portion. The damper pin further includes a plurality of rings coaxially aligned with and disposed along the retention pin between the first end portion and the second end portion. The first end portion, the second end portion and the plurality of rings define a generally arcuate outer surface of the damper pin that is configured to contact with a groove defined between the adjacent turbine blades.Type: GrantFiled: September 3, 2015Date of Patent: October 15, 2019Assignee: General Electric CompanyInventors: Spencer A. Kareff, Brian Denver Potter, Ariel Caesar Prepena Jacala
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Patent number: 10385701Abstract: A damper pin for damping adjacent turbine blades coupled to a rotor shaft includes a first end portion that is axially spaced from a second end portion and a spring member that extends axially from an inner surface of the first end portion to an inner surface of the second end portion. The first end portion, the spring member and the second end portion define a generally arcuate top portion of the damper pin. The top portion is configured to contact with a groove defined between the adjacent turbine blades.Type: GrantFiled: September 3, 2015Date of Patent: August 20, 2019Assignee: GENERAL ELECTRIC COMPANYInventors: Spencer A. Kareff, Brian Denver Potter, Ariel Caesar Prepena Jacala
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Publication number: 20170191366Abstract: A damper pin for damping adjacent turbine blades coupled to a rotor shaft includes an elongated body having a center portion disposed between a first end portion and a second end portion. The first end portion, center portion and second end portion define an outer surface of the elongated body. The outer surface is configured to contact with a groove defined between the adjacent turbine blades. The elongated body defines a slot that extends radially inwardly through the outer surface and axially through the elongated body.Type: ApplicationFiled: January 5, 2016Publication date: July 6, 2017Inventors: Spencer A. Kareff, Sheo Narain Giri, Kevin Lee Worley, Harish Bommanakatte
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Publication number: 20170067347Abstract: A damper pin for damping adjacent turbine blades coupled to a rotor shaft includes an elongated body having a center portion disposed between a first end portion and a second end portion. The first end portion, center portion and second end portion define a generally arcuate top portion of the elongated body that is configured to contact with a groove defined between the adjacent turbine blades. The elongated body includes a first side portion laterally opposed to a second side portion and defines a plurality of laterally extending slots. The slots are axially spaced along the center portion and each slot extends at least partially through at least one of the first side portion or the second side portion.Type: ApplicationFiled: September 3, 2015Publication date: March 9, 2017Inventors: Spencer A. Kareff, Gayathri Puram, Bradley Taylor Boyer, Christopher Michael Penny, Matthew R. Piersall
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Publication number: 20170067346Abstract: A damper pin for damping adjacent turbine blades coupled to a rotor disk comprises a first elongated body having a center portion disposed between a first end portion and a second end portion. The first end portion, center portion and second end portion define a generally arcuate top portion of the first elongated body. The first elongated body defines a slot that extends axially therethrough. The damper pin further includes a second elongated body having a generally arcuate top portion. The second elongated body is at least partially disposed within the slot and is slideably engaged in an axial direction with the first elongated body.Type: ApplicationFiled: September 3, 2015Publication date: March 9, 2017Inventors: Spencer A. Kareff, Poorna Krishnakumar, Kevin Lee Worley, Christopher Michael Penny, Stephen Paul Wassynger
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Publication number: 20170067350Abstract: A damper pin for damping adjacent turbine blades coupled to a rotor shaft includes a first end portion that is axially aligned with and axially spaced from a second end portion and a retention pin that is coaxially aligned with and disposed between the first end portion and the second end portion. The retention pin couples the first end portion to the second end portion. The damper pin further includes a plurality of rings coaxially aligned with and disposed along the retention pin between the first end portion and the second end portion. The first end portion, the second end portion and the plurality of rings define a generally arcuate outer surface of the damper pin that is configured to contact with a groove defined between the adjacent turbine blades.Type: ApplicationFiled: September 3, 2015Publication date: March 9, 2017Inventors: Spencer A. Kareff, Brian Denver Potter, Ariel Caesar Prepena Jacala
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Publication number: 20170067351Abstract: A damper pin for damping adjacent turbine blades coupled to a rotor shaft includes an elongated body having a center portion that is disposed between a first end portion and a second end portion. The first end portion, center portion and second end portion at least partially define a generally arcuate top portion of the elongated body. At least a portion of the top portion may be configured to contact with a groove that is defined between the adjacent turbine blades. The first end portion and the second end portion have substantially semi-cylindrical cross sectional shapes and the center portion has a cylindrical cross sectional shape. A bottom portion of the elongated body diverges radially outwardly from the first end portion to the center portion and from the second end portion to the center portion.Type: ApplicationFiled: September 3, 2015Publication date: March 9, 2017Inventors: Spencer A. Kareff, Sheo Narain Giri
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Publication number: 20170067349Abstract: A damper pin for damping adjacent turbine blades coupled to a rotor shaft includes an outer body having a center portion disposed between a first end portion and a second end portion. The first end portion, center portion and second end portion define a generally arcuate top portion of the outer body. At least a portion of the outer body defines an opening that extends axially therethrough. The damper pin further includes a core body that is disposed at least partially within the opening of the outer body.Type: ApplicationFiled: September 3, 2015Publication date: March 9, 2017Inventors: Spencer A. Kareff, Gayathri Puram
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Publication number: 20170067348Abstract: A damper pin for damping adjacent turbine blades coupled to a rotor shaft includes a first end portion that is axially spaced from a second end portion and a spring member that extends axially from an inner surface of the first end portion to an inner surface of the second end portion. The first end portion, the spring member and the second end portion define a generally arcuate top portion of the damper pin. The top portion is configured to contact with a groove defined between the adjacent turbine blades.Type: ApplicationFiled: September 3, 2015Publication date: March 9, 2017Inventors: Spencer A. Kareff, Brian Denver Potter, Ariel Caesar Prepena Jacala