Patents by Inventor David Waldman
David Waldman 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: 11333042Abstract: A turbine blade includes an airfoil that has a tip region that extends from the leading edge toward the trailing edge, and the tip region is bounded by a wall that extends at an angle. The leading edge has a leading edge cooling circuit that is defined from the platform to a tip flag channel, and the leading edge cooling circuit is in fluid communication with the tip flag channel. The pressure side includes at least one tip dust hole defined through the wall proximate the pressure side, and the at least one tip dust hole has an inlet and an outlet. The airfoil has at least one rib defined on the wall that extends at a second angle to direct the particles and a portion of the cooling fluid into the inlet.Type: GrantFiled: August 20, 2020Date of Patent: May 17, 2022Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Daniel C. Crites, Mark C. Morris, Steven Whitaker, David Waldman
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Publication number: 20200378277Abstract: A turbine blade includes an airfoil that has a tip region that extends from the leading edge toward the trailing edge, and the tip region is bounded by a wall that extends at an angle. The leading edge has a leading edge cooling circuit that is defined from the platform to a tip flag channel, and the leading edge cooling circuit is in fluid communication with the tip flag channel. The pressure side includes at least one tip dust hole defined through the wall proximate the pressure side, and the at least one tip dust hole has an inlet and an outlet. The airfoil has at least one rib defined on the wall that extends at a second angle to direct the particles and a portion of the cooling fluid into the inlet.Type: ApplicationFiled: August 20, 2020Publication date: December 3, 2020Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Daniel C. Crites, Mark C. Morris, Steven Whitaker, David Waldman
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Patent number: 10787932Abstract: A turbine blade includes an airfoil that has a tip region that extends from the leading edge toward the trailing edge, and the tip region is bounded by a wall that extends at a positive angle. The leading edge has a leading edge cooling circuit that is defined from the platform to a tip flag channel, and the leading edge cooling circuit is in fluid communication with the tip flag channel. The pressure side includes at least one tip dust hole defined through the wall proximate the pressure side, and the at least one tip dust hole has an inlet and an outlet. The airfoil has at least one rib defined on the wall that extends at a second angle, and the at least one rib merges with at least one flow scoop to direct the particles and a portion of the cooling fluid into the inlet.Type: GrantFiled: July 13, 2018Date of Patent: September 29, 2020Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Daniel C. Crites, Mark C. Morris, Steven Whitaker, David Waldman
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Patent number: 10546968Abstract: An electromagnetic wave concentrating system, comprising a photovoltaic material and at least one holographic concentrator. The holographic concentrator includes at least two stacked holographic optical elements (HOE). Each HOE is configured to diffract incident light into a diffracted beams having different ranges of wavelengths. The diffracted beams generated by each HOE are directed at the photovoltaic material.Type: GrantFiled: February 21, 2014Date of Patent: January 28, 2020Inventors: David A. Waldman, Joby Joseph
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Publication number: 20200018190Abstract: A turbine blade includes an airfoil that has a tip region that extends from the leading edge toward the trailing edge, and the tip region is bounded by a wall that extends at a positive angle. The leading edge has a leading edge cooling circuit that is defined from the platform to a tip flag channel, and the leading edge cooling circuit is in fluid communication with the tip flag channel. The pressure side includes at least one tip dust hole defined through the wall proximate the pressure side, and the at least one tip dust hole has an inlet and an outlet. The airfoil has at least one rib defined on the wall that extends at a second angle, and the at least one rib merges with at least one flow scoop to direct the particles and a portion of the cooling fluid into the inlet.Type: ApplicationFiled: July 13, 2018Publication date: January 16, 2020Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Daniel C. Crites, Mark C. Morris, Steven Whitaker, David Waldman
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Patent number: 10113433Abstract: An engine component includes a body having an internal surface and an external surface, the internal surface at least partially defining an internal cooling circuit. The engine component further includes a plurality of cooling holes formed in the body and extending between the internal cooling circuit and the external surface of the body. The plurality of cooling holes includes a first cooling hole with forward diffusion and lateral diffusion.Type: GrantFiled: October 4, 2012Date of Patent: October 30, 2018Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Mark C. Morris, David Waldman, Malak Fouad Malak, Luis Tapia
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Publication number: 20180297267Abstract: A system for manufacturing a cylindrical, nanoimprint lithography master includes, in one embodiment, a flat master coated with a first layer of compliant photopolymer material, a cylindrical master with an outer sleeve formed from a second layer of compliant photopolymer material, and a light source. The cylindrical master is disposed in tangential contact against the flat master such that the first and second layers of compliant material exhibit 5%-20% compressive strain within the region of contact. Through such pressure, the feature pattern in the flat master is imprinted into the first layer of material. Light from the light source is acutely focused into a narrow curing zone within the contact region. Curing causes the first layer of photopolymer material to bond to the outer sleeve. Through geometric matching and synchronized movement between the flat and cylindrical masters, the cylindrical master can be patterned about its periphery without creating a seam.Type: ApplicationFiled: April 11, 2018Publication date: October 18, 2018Inventors: John S. Berg, John Howard, Dimitur Benchev, David A. Waldman
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Patent number: 9879544Abstract: A turbine rotor blade is provided for a turbine section of an engine. The turbine rotor blade includes a platform and an airfoil extending from the platform into a mainstream gas path of the turbine section. The airfoil includes a first side wall; a second side wall joined to the first side wall at a leading edge and a trailing edge; a tip cap extending between the first side wall and the second side wall; a first parapet wall extending from the first side wall; and a first cooling hole through the tip cap and the first parapet wall configured to deliver cooling air. The first cooling hole has a closed channel section and an open channel section. The open channel section forms a slot.Type: GrantFiled: October 16, 2013Date of Patent: January 30, 2018Assignee: HONEYWELL INTERNATIONAL INC.Inventors: David Waldman, Mark C. Morris, Malak Fouad Malak
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Patent number: 9816389Abstract: In accordance with an exemplary embodiment, a turbine rotor blade is provided for a turbine section of an engine. The turbine rotor blade includes a platform and an airfoil extending from the platform into a mainstream gas path of the turbine section. The airfoil includes a first side wall; a second side wall joined to the first side wall at a leading edge and a trailing edge; a tip cap extending between the first side wall and the second side wall; a first parapet wall extending from the first side wall; a first parapet wall cavity formed at least partially within the first parapet wall; and a first cooling hole extending between the first parapet wall cavity and a first surface of the first parapet wall such that cooling air flows through the first parapet wall cavity, through the first cooling hole, and out of the first parapet wall.Type: GrantFiled: October 16, 2013Date of Patent: November 14, 2017Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Malak Fouad Malak, Mark C. Morris, David Waldman
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Patent number: 9764435Abstract: A heat exchange system includes a tubular fan air inlet portion and a tubular cooled air outlet portion connected to a first end of a tubular mid portion. The heat exchange system further includes a tubular hot air inlet portion and a tubular recycled fan air outlet portion connected a second end of the mid portion. Still further, the heat exchange system includes an integrally-formed, compliant heat exchanger tube extending between the hot air inlet portion and the cooled air outlet portion within the mid portion to define a heat exchanger first flow passage within the heat exchanger tube and a second flow passage outside of the heat exchanger tube but within the tubular mid portion. Methods for fabricating such heat exchange systems are also provided.Type: GrantFiled: October 28, 2013Date of Patent: September 19, 2017Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Mark C. Morris, Donlad G. Godfrey, David Waldman
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Patent number: 9752835Abstract: Unitary heat exchangers having integrally-formed compliant heat exchanger tubes and heat exchange systems including the same are provided. The unitary heat exchanger comprises an inlet plenum and an outlet plenum and a plurality of integrally-formed compliant heat exchanger tubes. The plurality of integrally-formed compliant heat exchanger tubes extend between and are integral with the inlet and outlet plenums to define a heat exchanger first flow passage. Each integrally-formed compliant heat exchanger tube comprises a tubular member and a plurality of integral heat transfer fins extend radially outwardly from at least one portion of the tubular member. The tubular member has a proximal tube end and a distal tube end and comprises a tubular wall having an outer wall surface and an inner wall surface.Type: GrantFiled: June 6, 2013Date of Patent: September 5, 2017Assignee: HONEYWELL INTERNATIONAL INC.Inventors: David Waldman, Mark C. Morris, Donald G. Godfrey
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Patent number: 9506566Abstract: Embodiments of a gas turbine engine including a finger-foil seal are provided, as are embodiments of a finger-foil seal. In one embodiment, the finger-foil seal includes an aerodynamic foil having a generally annular body through which a first opening is formed. A finger seal retention structure is disposed around the aerodynamic foil. A finger seal backing spring is coupled to the finger seal retention structure and extends radially inward therefrom to contact an outer circumference of the aerodynamic foil. A first anti-rotation pin extends radially from the finger seal retention structure and into the first opening formed in the aerodynamic foil to inhibit rotation of the aerodynamic foil during operation of the finger-foil seal.Type: GrantFiled: October 23, 2013Date of Patent: November 29, 2016Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Marshall Saville, Keith Alan Hurley, Joseph Yanof, Tina Hynes, David Waldman
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Patent number: 9410702Abstract: Disclosed in various exemplary embodiments are turbine engine combustors with effusion and impingement cooling and methods for manufacturing the same. In one exemplary embodiment, disclosed is a combustor for a turbine engine that includes an annular liner portion including a first metering hole positioned on a cold side annular surface of the annular liner portion and an impingement chamber positioned in the annular liner. The impingement chamber connects to an entry hole on the cold side annular surface and includes a cooling air outlet passageway that is angled with respect to a hot side annular surface of the annular liner portion and that connects to an exit hole positioned on the hot side annular surface of the annular liner portion. The first metering hole is connected to the impingement chamber. The cooling air outlet passageway directs the air onto the hot side annular surface and spreads the airflow axially and laterally parallel to the hot side annular surface.Type: GrantFiled: February 10, 2014Date of Patent: August 9, 2016Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Rodolphe Dudebout, Dustin Brandt, David Waldman, James Neumann, Art Payne
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Publication number: 20150226433Abstract: Disclosed in various exemplary embodiments are turbine engine combustors with effusion and impingement cooling and methods for manufacturing the same. In one exemplary embodiment, disclosed is a combustor for a turbine engine that includes an annular liner portion including a first metering hole positioned on a cold side annular surface of the annular liner portion and an impingement chamber positioned in the annular liner. The impingement chamber connects to an entry hole on the cold side annular surface and includes a cooling air outlet passageway that is angled with respect to a hot side annular surface of the annular liner portion and that connects to an exit hole positioned on the hot side annular surface of the annular liner portion. The first metering hole is connected to the impingement chamber. The cooling air outlet passageway directs the air onto the hot side annular surface and spreads the airflow axially and laterally parallel to the hot side annular surface.Type: ApplicationFiled: February 10, 2014Publication date: August 13, 2015Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Rodolphe Dudebout, Dustin Brandt, David Waldman, James Neumann, Art Payne
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Publication number: 20150114611Abstract: A heat exchange system includes a tubular fan air inlet portion and a tubular cooled air outlet portion connected to a first end of a tubular mid portion. The heat exchange system further includes a tubular hot air inlet portion and a tubular recycled fan air outlet portion connected a second end of the mid portion. Still further, the heat exchange system includes an integrally-formed, compliant heat exchanger tube extending between the hot air inlet portion and the cooled air outlet portion within the mid portion to define a heat exchanger first flow passage within the heat exchanger tube and a second flow passage outside of the heat exchanger tube but within the tubular mid portion. Methods for fabricating such heat exchange systems are also provided.Type: ApplicationFiled: October 28, 2013Publication date: April 30, 2015Inventors: Mark C. Morris, Donald G. Godfrey, David Waldman
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Publication number: 20150110621Abstract: Embodiments of a gas turbine engine including a finger-foil seal are provided, as are embodiments of a finger-foil seal. In one embodiment, the finger-foil seal includes an aerodynamic foil having a generally annular body through which a first opening is formed. A finger seal retention structure is disposed around the aerodynamic foil. A finger seal backing spring is coupled to the finger seal retention structure and extends radially inward therefrom to contact an outer circumference of the aerodynamic foil. A first anti-rotation pin extends radially from the finger seal retention structure and into the first opening formed in the aerodynamic foil to inhibit rotation of the aerodynamic foil during operation of the finger-foil seal.Type: ApplicationFiled: October 23, 2013Publication date: April 23, 2015Inventors: Marshall Saville, Keith Alan Hurley, Joseph Yanof, Tina Hynes, David Waldman
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Publication number: 20150104327Abstract: In accordance with an exemplary embodiment, a turbine rotor blade is provided for a turbine section of an engine. The turbine rotor blade includes a platform and an airfoil extending from the platform into a mainstream gas path of the turbine section. The airfoil includes a first side wall; a second side wall joined to the first side wall at a leading edge and a trailing edge; a tip cap extending between the first side wall and the second side wall; a first parapet wall extending from the first side wall; a first parapet wall cavity formed at least partially within the first parapet wall; and a first cooling hole extending between the first parapet wall cavity and a first surface of the first parapet wall such that cooling air flows through the first parapet wall cavity, through the first cooling hole, and out of the first parapet wall.Type: ApplicationFiled: October 16, 2013Publication date: April 16, 2015Inventors: Malak Fouad Malak, Mark C. Morris, David Waldman
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Publication number: 20150104326Abstract: A turbine rotor blade is provided for a turbine section of an engine. The turbine rotor blade includes a platform and an airfoil extending from the platform into a mainstream gas path of the turbine section. The airfoil includes a first side wall; a second side wall joined to the first side wall at a leading edge and a trailing edge; a tip cap extending between the first side wall and the second side wall; a first parapet wall extending from the first side wall; and a first cooling hole through the tip cap and the first parapet wall configured to deliver cooling air. The first cooling hole has a closed channel section and an open channel section. The open channel section forms a slot.Type: ApplicationFiled: October 16, 2013Publication date: April 16, 2015Inventors: David Waldman, Mark C. Morris, Malak Fouad Malak
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Publication number: 20140360698Abstract: Unitary heat exchangers having integrally-formed compliant heat exchanger tubes and heat exchange systems including the same are provided. The unitary heat exchanger comprises an inlet plenum and an outlet plenum and a plurality of integrally-formed compliant heat exchanger tubes. The plurality of integrally-formed compliant heat exchanger tubes extend between and are integral with the inlet and outlet plenums to define a heat exchanger first flow passage. Each integrally-formed compliant heat exchanger tube comprises a tubular member and a plurality of integral heat transfer fins extend radially outwardly from at least one portion of the tubular member. The tubular member has a proximal tube end and a distal tube end and comprises a tubular wall having an outer wall surface and an inner wall surface.Type: ApplicationFiled: June 6, 2013Publication date: December 11, 2014Inventors: David Waldman, Mark C. Morris, Donald G. Godfrey
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Publication number: 20140230897Abstract: An electromagnetic wave concentrating system, comprising a photovoltaic material and at least one holographic concentrator. The holographic concentrator includes at least two stacked holographic optical elements (HOE). Each HOE is configured to diffract incident light into a diffracted beams having different ranges of wavelengths. The diffracted beams generated by each HOE are directed at the photovoltaic material.Type: ApplicationFiled: February 21, 2014Publication date: August 21, 2014Applicant: HolFocus, LLCInventors: David A. Waldman, Joby Joseph