Patents by Inventor Garth M Nelson
Garth M Nelson 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: 10494235Abstract: A crane system for a wind turbine is disclosed. The crane system includes a support structure, a movable structure, a slidable device, a first actuator unit, and a plurality of second actuator units. The slidable device includes a base, a retention component, and first, second, third, and fourth pairs of clamping arms. The base is coupled to the support structure. The retention component is coupled to either side of the base to define a channel between the retention component and the base. The first and second pairs of clamping arms are spaced apart and coupled to each other and to the base. The third and fourth pairs of clamping arms are disposed within the channel, spaced apart, and coupled to each other. The first actuator unit is coupled to the slidable device and each second actuator unit is coupled to the first, second, third, and fourth pairs of clamping arms.Type: GrantFiled: December 6, 2016Date of Patent: December 3, 2019Assignee: General Electric CompanyInventors: Garth M Nelson, Biao Fang, Fulton Jose Lopez, George Albert Goller
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Publication number: 20180155160Abstract: A crane system for a wind turbine is disclosed. The crane system includes a support structure, a movable structure, a slidable device, a first actuator unit, and a plurality of second actuator units. The slidable device includes a base, a retention component, and first, second, third, and fourth pairs of clamping arms. The base is coupled to the support structure. The retention component is coupled to either side of the base to define a channel between the retention component and the base. The first and second pairs of clamping arms are spaced apart and coupled to each other and to the base. The third and fourth pairs of clamping arms are disposed within the channel, spaced apart, and coupled to each other. The first actuator unit is coupled to the slidable device and each second actuator unit is coupled to the first, second, third, and fourth pairs of clamping arms.Type: ApplicationFiled: December 6, 2016Publication date: June 7, 2018Inventors: Garth M Nelson, Biao Fang, Fulton Jose Lopez, George Albert Goller
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Patent number: 9416462Abstract: A machining system for machining a workpiece is provided. The machining system comprises a machine tool, a plurality of cutting tools, a CNC controller. The plurality of cutting tools comprises an electrode and a conventional cutting tool exchangeably disposed on the machine tool. The machining system further comprises a power supply, a process controller, and an electrolyte supply, wherein the machine tool, the electrode, the CNC controller, the power supply, the process controller and the electrolyte supply are configured to cooperate to function as an electroerosion machining device, wherein the machine tool, the CNC controller, the conventional cutting tool and the electrolyte supply are configured to cooperate to function as a conventional machining device, and wherein the machining system is configured to function alternately as the electroerosion machining device and the conventional machining device.Type: GrantFiled: September 13, 2011Date of Patent: August 16, 2016Assignee: General Electric CompanyInventors: Yimin Zhan, Yuanyuan Guo, Yuanfeng Luo, Renewi Yuan, Zhixue Peng, Garth M. Nelson, Massimo Arcioni, Francescosaverio Chiari, Hongtao Li
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Patent number: 8999136Abstract: A Method and machine tool for compensating a wear of an electrode that machines a workpiece. The method includes selecting a current pocket from plural pockets of the workpiece; updating a wear compensation to be applied to the electrode for the current pocket based on wear compensation of a previous pocket, where the previous pocket is adjacent to the current pocket; and applying the updated wear compensation to the electrode for machining the current pocket.Type: GrantFiled: September 14, 2010Date of Patent: April 7, 2015Assignee: Nuovo Pignone S.p.A.Inventors: Ugo Cantelli, Garth M Nelson, Yuanfeng Luo, Yimin Zhan, Roberto Ciappi, Massimo Arcioni, Renwei Yuan
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Patent number: 8976935Abstract: A collimator grid and a method of fabricating the collimator grid are disclosed. The method includes molding a plurality of plates, each plate includes a plurality of grooves in a first surface, a plurality of fin tips in a second surface disposed opposite to the first surface, plurality of ribs on a first pair of peripheral sides, a plurality of first fiducials formed on the plurality of ribs, and a plurality of second fiducials formed on a second pair of peripheral sides. The method includes machining the second surface to form the plurality of fins having predefined dimensions. Further, the method includes stacking the plurality of plates overlapping each other based on the plurality of first fiducials, and machining the plurality of ribs and first fiducials to form the collimator grid.Type: GrantFiled: December 21, 2012Date of Patent: March 10, 2015Assignee: General Electric CompanyInventors: Prabhjot Singh, Garth M Nelson, Brian David Yanoff, Juan Pablo Cilia
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Publication number: 20140177781Abstract: A collimator grid and a method of fabricating the collimator grid are disclosed. The method includes molding a plurality of plates, each plate includes a plurality of grooves in a first surface, a plurality of fin tips in a second surface disposed opposite to the first surface, plurality of ribs on a first pair of peripheral sides, a plurality of first fiducials formed on the plurality of ribs, and a plurality of second fiducials formed on a second pair of peripheral sides. The method includes machining the second surface to form the plurality of fins having predefined dimensions. Further, the method includes stacking the plurality of plates overlapping each other based on the plurality of first fiducials, and machining the plurality of ribs and first fiducials to form the collimator grid.Type: ApplicationFiled: December 21, 2012Publication date: June 26, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Prabhjot Singh, Garth M. Nelson, Brian David Yanoff, Juan Pablo Cilia
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Patent number: 8560110Abstract: An electroerosion control system includes a general CNC controller being configured for controlling a general CNC machine process, a power supply for energizing a tool electrode and a workpiece to be machined, an electroerosion controller electrically connecting with the power supply for controlling an output of the power supply, and adaptively and electrically connecting with the general CNC controller for communication thereof, and a sensor sensing real-time status information of a working gap between the tool electrode and the workpiece and for sending said real-time status information to said electroerosion controller. Said electroerosion controller automatically controls the electroerosion machining process through the general CNC controller according to the real-time status information of the working gap.Type: GrantFiled: June 9, 2010Date of Patent: October 15, 2013Assignee: General Electric CompanyInventors: Yimin Zhan, Renwei Yuan, Garth M. Nelson, Yuanfeng Luo, Jun Cai, Ugo Cantelli
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Publication number: 20130220826Abstract: A machining system for machining a workpiece is provided. The machining system comprises a machine tool, a plurality of cutting tools, a CNC controller. The plurality of cutting tools comprises an electrode and a conventional cutting tool exchangeably disposed on the machine tool. The machining system further comprises a power supply, a process controller, and an electrolyte supply, wherein the machine tool, the electrode, the CNC controller, the power supply, the process controller and the electrolyte supply are configured to cooperate to function as an electroerosion machining device, wherein the machine tool, the CNC controller, the conventional cutting tool and the electrolyte supply are configured to cooperate to function as a conventional machining device, and wherein the machining system is configured to function alternately as the electroerosion machining device and the conventional machining device.Type: ApplicationFiled: September 13, 2011Publication date: August 29, 2013Inventors: Yimin Zhan, Yuanyuan Guo, Yuanfeng Luo, Renewi Yuan, Zhixue Peng, Garth M. Nelson, Massimo Arcioni, Francescosaverio Chiari, Hongtao Li
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Publication number: 20120240386Abstract: A Method and machine tool for compensating a wear of an electrode that machines a workpiece. The method includes selecting a current pocket from plural pockets of the workpiece; updating a wear compensation to be applied to the electrode for the current pocket based on wear compensation of a previous pocket, where the previous pocket is adjacent to the current pocket; and applying the updated wear compensation to the electrode for machining the current pocket.Type: ApplicationFiled: September 14, 2010Publication date: September 27, 2012Inventors: Ugo Cantelli, Garth M. Nelson, Yuanfeng Luo, Yimin Zhan, Roberto Ciappi, Massimo Arcioni, Renwei Yuan
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Publication number: 20100320078Abstract: An electroerosion spindle assembly includes a main shaft, a tool electrode having a rear end directly or indirectly attached to the shaft and in alignment with the main shaft in a longitudinal direction, a container surrounding the main shaft, a stationary-to-rotary electrical conduction device mounted on the container for transitting power energy to the tool electrode, and a channel routing a flushing fluid to a front end of the tool electrode. The channel has at least one flushing slot in the container.Type: ApplicationFiled: June 9, 2010Publication date: December 23, 2010Inventors: Renwei Yuan, Garth M. Nelson, Yuanfeng Luo, Roberto Ciappi, Jun Cai, Yimin Zhan, Ugo Cantelli, Massimo Arcioni
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Publication number: 20100324720Abstract: An electroerosion control system includes a general CNC controller being configured for controlling a general CNC machine process, a power supply for energizing a tool electrode and a workpiece to be machined, an electroerosion controller electrically connecting with the power supply for controlling an output of the power supply, and adaptively and electrically connecting with the general CNC controller for communication thereof, and a sensor sensing real-time status information of a working gap between the tool electrode and the workpiece and for sending said real-time status information to said electroerosion controller. Said electroerosion controller automatically controls the electroerosion machining process through the general CNC controller according to the real-time status information of the working gap.Type: ApplicationFiled: June 9, 2010Publication date: December 23, 2010Inventors: Yimin ZHAN, Renwei Yuan, Garth M. Nelson, Yuanfeng Luo, Jun Cai, Ugo Cantelli
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Patent number: 7824526Abstract: An apparatus and method for adapting a CNC milling machine for electroerosion machining. The apparatus includes a tubular electrode on the distal end of an adapter shaft. A tool holder on the proximal end of the adapter shaft is mountable in the chuck of a cutter spindle in the milling machine. The adapter shaft is rotatably mounted within a bearing and an electrical brush contact subassembly, both of which are supported by a bracket. The bracket is attached to the milling machine but insulates it from the tool electrode. The bearing supports the adapter shaft in alignment with the CNC spindle. An electrical power supply energizes the electrode and the workpiece for electroerosion in a gap between them. Electrolyte is circulated through the spinning tool electrode during operation. The CNC computer is configured to operate the machine, power supply, and electrolyte flow for electroerosion machining.Type: GrantFiled: December 11, 2006Date of Patent: November 2, 2010Assignee: General Electric CompanyInventors: Renwei Yuan, Yimin Zhan, Ugo Cantelli, Yuanfeng Luo, Garth M. Nelson
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Publication number: 20080142488Abstract: Disclosed herein is a compound electrode comprising a first portion comprising graphite; and a second portion comprising a metal; wherein the first portion is in continuous communication with the second portion along a length of the compound electrode. Disclosed herein too is a compound electrode comprising a first portion comprising graphite; and a second portion comprising a metal; wherein the first portion is in a tight fit with the second portion along a length of the compound electrode. Disclosed herein is a method comprising creating an electric arc between a compound electrode and a workpiece; wherein the compound electrode comprises a first portion comprising graphite; and a second portion comprising a metal; wherein the first portion is in a tight fit with the second portion along a length of the compound electrode; and removing a portion of the workpiece.Type: ApplicationFiled: December 19, 2006Publication date: June 19, 2008Applicant: GENERAL ELECTRIC COMPANYInventors: Yuanfeng Luo, Garth M. Nelson, Ugo Cantelli, Renwei Yuan, Yimin Zhan, Enzo Nocciolini
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Publication number: 20080001485Abstract: A system for curing and consolidation of coil with insulation includes an insulation layer disposed around an electrical coil. A release layer disposed around the insulation layer. A breather layer is disposed around the release layer. A vacuum bag structure is disposed around the breather layer without using a molding structure.Type: ApplicationFiled: June 30, 2006Publication date: January 3, 2008Inventors: Ram Kumar Upadhyay, Garth M. Nelson, Patricia Chapman Irwin, Bowden Kirkpatrick, Donald Lee Cousins
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Patent number: 6181978Abstract: A system and method for generating a smooth blending fillet surface between a platform and an airfoil shape mounted thereto. This is accomplished by generating a fillet surface by acquiring descriptions of an airfoil shape (e.g., the pressure side, the leading edge, the suction side and the trailing edge), a platform surface, a platform footprint, and filleting curves for the pressure and suction sides of the airfoil. These descriptions are used produce a smooth mesh of points which capture both the blending fillet surface and the airfoil. The smooth mesh of points are used to render slope-continuous blended fillet surfaces.Type: GrantFiled: July 31, 1998Date of Patent: January 30, 2001Assignee: General Electric CompanyInventors: John Knox Hinds, Garth M Nelson, David Alan Caruso
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Patent number: 5857032Abstract: This invention discloses a system and method for measuring and monitoring three-dimensional shaped objects with projections of computer models of the objects. The computer models of the three-dimensional shaped objects are in the form of grid patterns. An image of the computer model of grid patterns is simultaneously projected from a dual projection system in two directions onto a real world instance of the object. Any variation between the computer model and the real world instance of the object is highlighted directly on the object by interference patterns of the two projections on the real world instance. The variation is quantified by counting the number of interference patterns on the real world instance of the object.Type: GrantFiled: April 25, 1997Date of Patent: January 5, 1999Assignee: General Electric CompanyInventors: Weiping Wang, Michael Evans Graham, John Knox Hinds, Garth M. Nelson
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Patent number: 5828574Abstract: A method for determining an adaptive feedrate for a machine tool used to machine a workpiece initially cut from stock using a stock-cutting program. Initial workpiece geometry is obtained from a geometry modeling program using the stock-cutting NC program as an input. Such automatically-generated initial workpiece geometry is used to derive adjusted (i.e., adaptive) feedrates in accordance with a known method.Type: GrantFiled: May 19, 1997Date of Patent: October 27, 1998Assignee: General Electric CompanyInventors: Dean Michael Robinson, Weiping Wang, Garth M. Nelson