Patents by Inventor Marek Wojciechowski
Marek Wojciechowski 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: 10557349Abstract: A method to repair a turbomachine including: assign blades and a shroud in a row of the turbomachine to a group; measure, for each blade in the group, a clearance between a tip surface of the blade and a surface of the shroud facing the tip surface; remove the blades and shroud from the row; calculate a difference between the clearance of associated each blade and a design clearance; determine, for each blade, if the difference may be minimized by adding material to the surface of the shroud; adding material to the surface of the shroud, wherein the addition of material to the facing surfaces results in the shroud having at least one dimension that exceeds an original design dimension of the shroud sections, and installing the group of the blades and the shroud with the added material to a row of a turbomachine, wherein at least one of the blades has at least one dimension that does not conform to an original design specification for the blade.Type: GrantFiled: July 27, 2018Date of Patent: February 11, 2020Assignee: General Electric CompanyInventors: Mariusz Pakuszewski, Georg Alois Smieskol, Marek Wojciechowski
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Publication number: 20190093692Abstract: The invention relates to a repair arrangement for a housing component of a gas turbine, wherein the housing component has at least one crack and at least one torque screw is inserted into the housing component to exert a force on the at least one crack. The invention further relates to a gas turbine having such a repair arrangement.Type: ApplicationFiled: September 28, 2018Publication date: March 28, 2019Inventors: Szymon JARZEBOWSKI, Marek WOJCIECHOWSKI, Krzysztof DYNAK, Damian WOLFF
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Publication number: 20190032489Abstract: A method to repair a turbomachine including: assign blades and a shroud in a row of the turbomachine to a group; measure, for each blade in the group, a clearance between a tip surface of the blade and a surface of the shroud facing the tip surface; remove the blades and shroud from the row; calculate a difference between the clearance of associated each blade and a design clearance; determine, for each blade, if the difference may be minimized by adding material to the surface of the shroud; adding material to the surface of the shroud, wherein the addition of material to the facing surfaces results in the shroud having at least one dimension that exceeds an original design dimension of the shroud sections, and installing the group of the blades and the shroud with the added material to a row of a turbomachine, wherein at least one of the blades has at least one dimension that does not conform to an original design specification for the blade.Type: ApplicationFiled: July 27, 2018Publication date: January 31, 2019Inventors: Mariusz PAKUSZEWSKI, Georg Alois SMIESKOL, Marek WOJCIECHOWSKI
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Publication number: 20180371922Abstract: Various aspects include a composite turbomachine component and related methods. In some cases, a method includes: identifying a location of potential or actual structural weakness in a body of a turbomachine component, the body including a first material having a first thermal expansion coefficient; forming a slot in the location of the body, the slot extending at least partially through a wall of the turbomachine component; and bonding an insert to the body at the slot to form a composite component, the insert including a second material having a second thermal expansion coefficient differing from the first thermal expansion coefficient by up to approximately ten percent, the second material consisting of a nickel-chromium-molybdenum alloy, wherein after the bonding the insert is configured to reduce the potential or actual structural weakness in the body.Type: ApplicationFiled: May 15, 2018Publication date: December 27, 2018Inventors: Wojciech Filip SITKIEWICZ, Artur Marcin CHUC-KARMANSKI, Magdalena GACA, Adam GAIK, Piotr Artur KLIMCZUK, Michal KOWALCZYK, Robert Tomasz LISKIEWICZ, Mariusz PAKUSZEWSKI, Stephen Paul WASSYNGER, Marek WOJCIECHOWSKI
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Patent number: 9938596Abstract: A turbine induction temper system. In one embodiment, an induction temper system for a turbine includes: an induction member; a control system operably connected to the induction coil; and a temperature sensor operably connected with the control system, wherein the control system is configured to control an electrical current supplied induction member in response to a temperature indicator about a component of the turbine obtained from the temperature sensor.Type: GrantFiled: April 24, 2012Date of Patent: April 10, 2018Assignee: General Electric CompanyInventors: Marek Wojciechowski, John Francis Nolan, John Matthew Sassatelli
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Patent number: 9407118Abstract: The disclosure includes a generator gas shield support device, and method of removing the generator gas shield using the support device. In one embodiment, the generator gas shield support device of a generator system includes a first support coupled to a generator rotor of the generator system. The first support of the generator gas shield support device is configured to releasably couple a first portion of a generator gas shield to the generator rotor of the generator system. The generator gas shield support device may also include a second support releasably coupled to the generator rotor. The second support is configured to support the first portion of the generator gas shield during a rotation of the generator rotor.Type: GrantFiled: February 28, 2013Date of Patent: August 2, 2016Assignee: General Electric CompanyInventors: Artur Marcin Chuc-Karmanski, Tony Lee Bombe, Marek Wojciechowski, Wiktor Jan Wojciechowski
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Publication number: 20150364962Abstract: The disclosure includes a generator gas shield support device, and method of removing the generator gas shield using the support device. In one embodiment, the generator gas shield support device of a generator system includes a first support coupled to a generator rotor of the generator system. The first support of the generator gas shield support device is configured to releasably couple a first portion of a generator gas shield to the generator rotor of the generator system. The generator gas shield support device may also include a second support releasably coupled to the generator rotor. The second support is configured to support the first portion of the generator gas shield during a rotation of the generator rotor.Type: ApplicationFiled: February 28, 2013Publication date: December 17, 2015Inventors: Artur Marcin Chuc-Karmanski, Tony Lee Bombe, Marek Wojciechowski, Wiktor Jan Wojciechowski
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Patent number: 9163511Abstract: Tenons can be installed at the ends of turbine blades by applying a solid state bonding procedure such as a friction welding technique to join the tenons to the turbine blades. The tenons can be employed to assemble the turbine blades to one or more covers for the turbine blades. The tenons can be installed in connection with the restoration of tenons for turbine buckets in steam turbines and in connection with the renovation of rotor assemblies that include turbine blades secured to a common disk, tenons located at one end of respective turbine blades and one or more covers secured to the turbine blades by means of the tenons. In instances in which tenon remnants are present at the ends of the turbine blades, tenon enlargement elements can be joined to the tenon remnants by the solid state bonding procedure. The tenon installations can be carried out in situ.Type: GrantFiled: December 19, 2012Date of Patent: October 20, 2015Assignee: GENERAL ELECTRIC COMPANYInventors: Marek Wojciechowski, Marciej Jan Żarnik
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Publication number: 20150224611Abstract: A method and system for use in facilitating relative movement between first and second components is provided. A first component engagement assembly is inserted into an opening in the first component. The first component engagement assembly is threadably coupled adjacent to a thrust member such that the thrust member extends through the first component opening. An end of the thrust member extends toward the second component. The first component engagement assembly couples in frictional engagement with an inner surface of the first component opening. When torque is exerted on the thrust member, the thrust member moves relative to the first component engagement assembly to exert, via the end of the thrust member, one of a thrust force and a traction force against the second component to move the second component relative to the first component.Type: ApplicationFiled: February 3, 2015Publication date: August 13, 2015Inventors: Marek Wojciechowski, Maciej Zarnik, Philippe Monfort-Moros, Michal Kowalczyk
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Publication number: 20140041223Abstract: Tenons can be installed at the ends of turbine blades by applying a solid state bonding procedure such as a friction welding technique to join the tenons to the turbine blades. The tenons can be employed to assemble the turbine blades to one or more covers for the turbine blades. The tenons can be installed in connection with the restoration of tenons for turbine buckets in steam turbines and in connection with the renovation of rotor assemblies that include turbine blades secured to a common disk, tenons located at one end of respective turbine blades and one or more covers secured to the turbine blades by means of the tenons. In instances in which tenon remnants are present at the ends of the turbine blades, tenon enlargement elements can be joined to the tenon remnants by the solid state bonding procedure. The tenon installations can be carried out in situ.Type: ApplicationFiled: December 19, 2012Publication date: February 13, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Marek Wojciechowski, Marciej Jan Zarnik
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Publication number: 20130193134Abstract: A turbine induction temper system. In one embodiment, an induction temper system for a turbine includes: an induction member; a control system operably connected to the induction coil; and a temperature sensor operably connected with the control system, wherein the control system is configured to control an electrical current supplied induction member in response to a temperature indicator about a component of the turbine obtained from the temperature sensor.Type: ApplicationFiled: April 24, 2012Publication date: August 1, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Marek Wojciechowski, John Francis Nolan, John Matthew Sassatelli
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Patent number: 7455975Abstract: An electrochemical detection system which specifically detects selected nucleic acid segments is described. The system utilizes biological probes such as nucleic acid or peptide nucleic acid probes which are complementary to and specifically hybridize with selected nucleic acid segments in order to generate a measurable current when an amperometric potential is applied. The electrochemical signal can be quantified.Type: GrantFiled: January 3, 2007Date of Patent: November 25, 2008Assignee: ESA Biosciences, Inc.Inventors: Robert W. Henkens, John P. O'Daly, Marek Wojciechowski, Honghua Zhang, Najih Naser, R. Michael Roe, Thomas N. Stewart, Deborah M. Thompson, Rebecca Sundseth, Steven E. Wegner
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Publication number: 20070111202Abstract: An electrochemical detection system which specifically detects selected nucleic acid segments is described. The system utilizes biological probes such as nucleic acid or peptide nucleic acid probes which are complementary to and specifically hybridize with selected nucleic acid segments in order to generate a measurable current when an amperometric potential is applied. The electrochemical signal can be quantified.Type: ApplicationFiled: January 3, 2007Publication date: May 17, 2007Applicant: ANDCARE, INC.Inventors: Robert Henkens, John O'Daly, Marek Wojciechowski, Honghua Zhang, Najih Naser, R. Roe, Thomas Stewart, Deborah Thompson, Rebecca Sundseth, Steven Wegner
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Patent number: 7169358Abstract: An electrochemical detection system which specifically detects selected nucleic acid segments is described. The system utilizes biological probes such as nucleic acid or peptide nucleic acid probes which are complementary to and specifically hybridize with selected nucleic acid segments in order to generate a measurable current when an amperometric potential is applied. The electrochemical signal can be quantified.Type: GrantFiled: February 25, 2002Date of Patent: January 30, 2007Inventors: Robert W. Henkens, John P. O'Daly, Marek Wojciechowski, Honghua Zhang, Najih Naser, R. Michael Roe, Thomas N. Stewart, Deborah M. Thompson, Rebecca Sundseth, Steven E. Wegner
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Publication number: 20040072158Abstract: An electrochemical detection system which specifically detects selected nucleic acid segments is described. The system utilizes biological probes such as nucleic acid or peptide nucleic acid probes which are complementary to and specifically hybridize with selected nucleic acid segments in order to generate a measurable current when an amperometric potential is applied. The electrochemical signal can be quantified.Type: ApplicationFiled: February 25, 2002Publication date: April 15, 2004Inventors: Robert W. Henkens, John P. O'Daly, Marek Wojciechowski, Honghua Zhang, Najih Naser, R. Michael Roe, Thomas N. Stewart, Deborah M. Thompson, Rebecca Sundseth, Steven E. Wegner
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Patent number: 6391558Abstract: An electrochemical detection system which specifically detects selected nucleic acid segments is described. The system utilizes biological probes such as nucleic acid or peptide nucleic acid probes which are complementary to and specifically hybridize with selected nucleic acid segments in order to generate a measurable current when an amperometric potential is applied. The electrochemical signal can be quantified.Type: GrantFiled: April 14, 2000Date of Patent: May 21, 2002Assignee: Andcare, Inc.Inventors: Robert W. Henkens, John P. O'Daly, Marek Wojciechowski, Honghua Zhang, Najih Naser, R. Michael Roe, Thomas N. Stewart, Deborah M. Thompson, Rebecca Sundseth, Steven E. Wegner
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Patent number: 5873990Abstract: An apparatus is disclosed which is a microprocessor based instrument designed to conveniently and rapidly measure various analytes in environmental and biological samples. The instrument operates as a stand-alone unit powered by a battery or a DC power module and may be equipped with a communication port allowing uploading test results to a computer. Several unique electronic, microchip and software configurations were developed for the device to make it a portable, low-cost, safe, automated and simple-to-operate instrument particularly adapted for precise and accurate measurement of metal ions such as heavy metals such as lead in human blood.Type: GrantFiled: August 21, 1996Date of Patent: February 23, 1999Assignee: Andcare, Inc.Inventors: Marek Wojciechowski, Frederick A. Ebeling, Robert W. Henkens, Najih A. Naser, John P. O'Daly, Steven E. Wegner
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Patent number: 5468366Abstract: The present invention provides a new device for use in measuring lead levels in biological and environmental samples. Using square wave coulometry and colloidal gold particles impregnated on carbon electrodes, the present invention provides a rapid, reliable, portable and inexpensive means of detecting low lead levels. The colloidal gold modified electrodes have microelectrode array characteristics and produce significantly higher stripping detection signals for lead than are produced at bulk gold electrode surfaces. The method is effective in determining levels of lead down to at least 5 .mu.g/dL in blood samples as small as 10 .mu.L.Type: GrantFiled: September 30, 1994Date of Patent: November 21, 1995Assignee: Andcare, Inc.Inventors: Steven Wegner, Michael A. Harpold, Terence M. McCaffrey, Susan E. Morris, Marek Wojciechowski, Junguo Zhao, Robert W. Henkens, Najih Naser, John P. O'Daly
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Patent number: 5368707Abstract: The invention relates to methods of determining micromolar levels of lead ion in various fluids, including blood. Detection of lead or other heavy metal ion concentrations as low as 1 .mu.g/dL is achieved. The methods are adaptable to the detection of low levels of lead in whole blood, employing a novel separation and release of lead ion from lead chelating agents. The disclosed methods employ isocitrate dehydrogenase-based electrodes which are particularly suited for detecting nanomolar levels of lead.Type: GrantFiled: June 7, 1993Date of Patent: November 29, 1994Assignee: Andcare, Inc.Inventors: Robert W. Henkens, Junguo Zhao, Marek Wojciechowski, John P. O'Daly, Zhi-Wei Liang, Susan E. Morris