Patents by Inventor David A. Haluck
David A. Haluck 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: 10577672Abstract: A method for cost effectively case hardening a component formed from a martensitic stainless steel material with a desired metallurgical condition for high temperature, high rolling contact fatigue, corrosion and spall initiation and propagation resistance bearing performance. The method describes a method to significantly reduce the carburization or carbo-nitriding process times for appreciable reduction in manufacturing cost. The Method includes the steps of: forming the component from a martensitic stainless steel material having an ASTM grain size of 9 or finer; and subjecting the component to one of a carburization and a carbo-nitriding treatment with significantly lower case hardening times for manufacturing cost-effectiveness.Type: GrantFiled: October 9, 2018Date of Patent: March 3, 2020Assignee: United Technologies CorporationInventors: Herbert A. Chin, David A. Haluck, William P. Ogden, Michael A. Moulin
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Publication number: 20190040486Abstract: A method for cost effectively case hardening a component formed from a martensitic stainless steel material with a desired metallurgical condition for high temperature, high rolling contact fatigue, corrosion and spall initiation and propagation resistance bearing performance. The method describes a method to significantly reduce the carburization or carbo-nitriding process times for appreciable reduction in manufacturing cost. The Method includes the steps of: forming the component from a martensitic stainless steel material having an ASTM grain size of 9 or finer; and subjecting the component to one of a carburization and a carbo-nitriding treatment with significantly lower case hardening times for manufacturing cost-effectiveness.Type: ApplicationFiled: October 9, 2018Publication date: February 7, 2019Applicant: United Technologies CorporationInventors: Herbert A. Chin, David A. Haluck, William P. Ogden, Michael A. Moulin
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Patent number: 10119175Abstract: A method for cost effectively case hardening a component formed from a martensitic stainless steel material with a desired metallurgical condition for high temperature, high rolling contact fatigue, corrosion and spall initiation and propagation resistance bearing performance. The method describes a method to significantly reduce the carburization or carbo-nitriding process times for appreciable reduction in manufacturing cost. The Method includes the steps of: forming the component from a martensitic stainless steel material having an ASTM grain size of 9 or finer; and subjecting the component to one of a carburization and a carbo-nitriding treatment with significantly lower case hardening times for manufacturing cost-effectiveness.Type: GrantFiled: November 24, 2014Date of Patent: November 6, 2018Assignee: United Technologies CorporationInventors: Herbert A Chin, David A Haluck, William P Ogden, Michael A Moulin
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Patent number: 9732394Abstract: A method of treating bearing rolling elements or bearing rings after a hardening and temper heat treatment is disclosed. The method may include treating the bearing rolling elements in a tumbling treatment and then in a duplex hardening treatment. The method may include treating the bearing rings in a peening treatment and then in a duplex hardening treatment. The duplex hardening treatment may also include at least one sequential process segment consisting of subjecting the bearing rolling element & rings to a nitriding process to increase the surface hardness and compressive residual stress. The combined two-step process produces a deep surface/sub-surface residual stress greater than the depth of the maximum operating von-Mises shear stress along with an ultra-hard surface with high magnitude of compressive residual stress. In so doing, the bearing ring and rolling elements will have significantly enhanced rolling contact fatigue resistance and resistance to surface imperfections and debris.Type: GrantFiled: May 17, 2012Date of Patent: August 15, 2017Assignee: UNITED TECHNOLOGIES CORPORATIONInventors: Herbert A. Chin, William P. Ogden, David A. Haluck, Sean McCutchan, Ronald F. Spitzer, Allen V. Keller
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Publication number: 20170016084Abstract: A method for cost effectively case hardening a component formed from a martensitic stainless steel material with a desired metallurgical condition for high temperature, high rolling contact fatigue, corrosion and spall initiation and propagation resistance bearing performance. The method describes a method to significantly reduce the carburization or carbo-nitriding process times for appreciable reduction in manufacturing cost. The Method includes the steps of: forming the component from a martensitic stainless steel material having an ASTM grain size of 9 or finer; and subjecting the component to one of a carburization and a carbo-nitriding treatment with significantly lower case hardening times for manufacturing cost-effectiveness.Type: ApplicationFiled: November 24, 2014Publication date: January 19, 2017Inventors: Herbert A Chin, David A Haluck, William P Ogden, Michael A Moulin
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Publication number: 20160032976Abstract: A rolling element bearing includes a plurality of bearing components, which include one or more rolling elements, an inner ring and an outer ring. A first of the bearing components includes martensitic stainless steel configured with a core and a hardened case. The martensitic stainless steel of the core includes approximately 8% by weight or more chromium. The martensitic stainless steel of the hardened case has a grain size that is substantially equal to or finer than ASTM grain size #7. The martensitic stainless steel of the hardened case includes approximately 6% by weight or more chromium, and carbon. Molecules that include the carbon are substantially uniformly dispersed within the hardened case.Type: ApplicationFiled: January 15, 2014Publication date: February 4, 2016Inventors: Herbert A. Chin, William P. Ogden, David A. Haluck, Ronald F. Spitzer
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Publication number: 20130306194Abstract: A method of treating bearing rolling elements or bearing rings after a hardening and temper heat treatment is disclosed. The method may include treating the bearing rolling elements in a tumbling treatment and then in a duplex hardening treatment. The method may include treating the bearing rings in a peening treatment and then in a duplex hardening treatment. The duplex hardening treatment may also include at least one sequential process segment consisting of subjecting the bearing rolling element & rings to a nitriding process to increase the surface hardness and compressive residual stress. The combined two-step process produces a deep surface/sub-surface residual stress greater than the depth of the maximum operating von-Mises shear stress along with an ultra-hard surface with high magnitude of compressive residual stress. In so doing, the bearing ring and rolling elements will have significantly enhanced rolling contact fatigue resistance and resistance to surface imperfections and debris.Type: ApplicationFiled: May 17, 2012Publication date: November 21, 2013Inventors: Herbert A. Chin, William P. Ogden, David A. Haluck, Sean McCutchan, Ronald F. Spitzer, Allen V. Keller
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Patent number: 7779691Abstract: A method for testing ball bearings includes applying a Hertzian contact stress on a ball bearing to provide a fracture of the ball bearing that releases acoustic energy, establishing a signal representing the acoustic energy, and identifying occurrence of the fracture based upon the signal.Type: GrantFiled: October 15, 2007Date of Patent: August 24, 2010Assignee: United Technologies CorporationInventors: Anindya Ghoshal, Ronald I. Holland, Herbert A. Chin, James L. Ambler, Leroy H. Favrow, Lucy M. Favrow, legal representative, David A. Haluck
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Publication number: 20090095083Abstract: A method for testing ball bearings includes applying a Hertzian contact stress on a ball bearing to provide a fracture of the ball bearing that releases acoustic energy, establishing a signal representing the acoustic energy, and identifying occurrence of the fracture based upon the signal.Type: ApplicationFiled: October 15, 2007Publication date: April 16, 2009Inventors: Anindya Ghoshal, Ronald I. Holland, Herbert A. Chin, James L. Ambler, Leroy H. Favrow, Lucy M. Farrow, David A. Haluck
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Patent number: 7186304Abstract: A carbo-nitriding process for forming a martensitic stainless steel, which is case hardened and superior corrosion resistance over carburized process, is provided. A process for forming a martensitic stainless steel which is case hardened is provided. The process comprises the steps of providing a material consisting essentially of from 8.0 to 18 wt % chromium, cobalt up to 16 wt %, vanadium up to 5.0 wt %, molybdenum up to 8.0 wt %, nickel up to 8.0 wt %, manganese up to 4.0 wt %, silicon up to 2.0 wt %, tungsten up to 6.0 wt %, titanium up to 2.0 wt %, niobium up to 4.0 wt % and the balance iron, and carbo-nitriding to prescribed levels of C+N, to form a hard, corrosion resistance case in a fracture tough stainless steel.Type: GrantFiled: June 2, 2004Date of Patent: March 6, 2007Assignee: United Technologies CorporationInventors: Herbert A. Chin, William P. Ogden, David A. Haluck
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Publication number: 20050268990Abstract: A carbo-nitriding process for forming a martensitic stainless steel, which is case hardened and superior corrosion resistance over carburized process, is provided. A process for forming a martensitic stainless steel which is case hardened is provided. The process comprises the steps of providing a material consisting essentially of from 8.0 to 18 wt % chromium, cobalt up to 16 wt %, vanadium up to 5.0 wt %, molybdenum up to 8.0 wt %, nickel up to 8.0 wt %, manganese up to 4.0 wt %, silicon up to 2.0 wt %, tungsten up to 6.0 wt %, titanium up to 2.0 wt %, niobium up to 4.0 wt % and the balance iron, and carbo-nitriding to prescribed levels of C+N, to form a hard, corrosion resistance case in a fracture tough stainless steel.Type: ApplicationFiled: June 2, 2004Publication date: December 8, 2005Inventors: Herbert Chin, William Ogden, David Haluck
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Patent number: 5230570Abstract: A high performance rolling element bearing (5) which is particularly suitable for use in a cryogenically cooled environment, comprises a composite cage (45) formed from glass fibers disposed in a solid lubricant matrix of a fluorocarbon polymer. The cage includes inserts (50) formed from a mixture of a soft metal and a solid lubricant such as a fluorocarbon polymer.Type: GrantFiled: May 19, 1992Date of Patent: July 27, 1993Assignee: United Technologies CorporationInventors: Roger W. Bursey, Jr., John B. Olinger, Jr., Samuel S. Owen, William E. Poole, David A. Haluck