Patents by Inventor David M. Daley
David M. Daley 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: 11193422Abstract: A lubrication system is disclosed. The lubrication system may be used in conjunction with a gas turbine engine for generating power or lift. The lubrication system utilized a flow scheduling valve which reduces lubricant flow to at least one component based on an engine load. The lubrication system may further include a main pump which may be regulated by an engine speed. Thus, a lubrication system which provides a lubricant to engine components based on the load and speed of the engine is possible. The system may improve efficiency of the engine by reducing the power previously spent in churning excess lubricant by at least one engine component as well as reducing the energy used by a lubricant cooler in cooling the excess lubricant. The lubricant cooler size may also be minimized to reduce weight and air drag due to the reduced lubricant flow.Type: GrantFiled: October 22, 2018Date of Patent: December 7, 2021Assignee: RAYTHEON TECHNOLOGIES CORPORATIONInventors: Francis Parnin, Paul H. Dolman, David M. Daley, Denman H. James, Richard W. Clark
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Publication number: 20190055886Abstract: A lubrication system is disclosed. The lubrication system may be used in conjunction with a gas turbine engine for generating power or lift. The lubrication system utilized a flow scheduling valve which reduces lubricant flow to at least one component based on an engine load. The lubrication system may further include a main pump which may be regulated by an engine speed. Thus, a lubrication system which provides a lubricant to engine components based on the load and speed of the engine is possible. The system may improve efficiency of the engine by reducing the power previously spent in churning excess lubricant by at least one engine component as well as reducing the energy used by a lubricant cooler in cooling the excess lubricant. The lubricant cooler size may also be minimized to reduce weight and air drag due to the reduced lubricant flow.Type: ApplicationFiled: October 22, 2018Publication date: February 21, 2019Inventors: Francis Parnin, Paul H. Dolman, David M. Daley, Denman H. James, Richard W. Clark
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Patent number: 10107197Abstract: A lubrication system is provided. The lubrication system may be used in conjunction with a gas turbine engine for generating power or lift. The lubrication system utilized a flow scheduling valve which reduces lubricant flow to at least one component based on an engine load. The lubrication system may further include a main pump which may be regulated by an engine speed. Thus, a lubrication system which provides a lubricant to engine components based on the load and speed of the engine is possible. The system may improve efficiency of the engine by reducing the power previously spent in churning excess lubricant by at least one engine component as well as reducing the energy used by a lubricant cooler in cooling the excess lubricant. The lubricant cooler size may also be minimized to reduce weight and air drag due to the reduced lubricant flow.Type: GrantFiled: November 30, 2012Date of Patent: October 23, 2018Assignee: UNITED TECHNOLOGIES CORPORATIONInventors: Francis Parnin, Paul H. Dolman, David M. Daley, Denman H. James, Richard W. Clark
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Patent number: 9181981Abstract: A bearing system includes a first bearing ring, a second bearing ring spaced radially outwards from the first bearing ring, and a bearing cage between the first bearing ring and the second bearing ring. The bearing cage includes a circumferential outer side, a circumferential inner side, and a plurality of circumferentially spaced retainer portions between an axially forward end and an axially trailing end. Roller elements are located in the plurality of retainer portions of the bearing cage. At least one fluid nozzle is axially spaced from the bearing cage for dispensing a fluid to the roller elements.Type: GrantFiled: February 20, 2008Date of Patent: November 10, 2015Assignee: United Technologies CorporationInventors: Louis J. Dobek, David M. Daley, Mark A. Metzger
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Patent number: 9121303Abstract: A bearing system includes an inner ring that surrounds an axis of rotation, an outer ring spaced radially outwards from the inner ring, and a cage that is positioned between the inner and outer rings to support a plurality of bearing elements. The inner ring includes an axial slot that extends in a direction along the axis of rotation. The inner ring also includes at least one radial side slot formed in at least one of a fore and aft end surface of the inner ring. The radial side slot directs lubricating fluid from the axial slot toward the cage to lubricate the plurality of bearing elements.Type: GrantFiled: June 10, 2008Date of Patent: September 1, 2015Assignee: United Technologies CorporationInventors: Louis J. Dobek, David M. Daley, Mark A. Metzger
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Publication number: 20140150439Abstract: A lubrication system is disclosed. The lubrication system may be used in conjunction with a gas turbine engine for generating power or lift. The lubrication system utilized a flow scheduling valve which reduces lubricant flow to at least one component based on an engine load. The lubrication system may further include a main pump which may be regulated by an engine speed. Thus, a lubrication system which provides a lubricant to engine components based on the load and speed of the engine is possible. The system may improve efficiency of the engine by reducing the power previously spent in churning excess lubricant by at least one engine component as well as reducing the energy used by a lubricant cooler in cooling the excess lubricant. The lubricant cooler size may also be minimized to reduce weight and air drag due to the reduced lubricant flow.Type: ApplicationFiled: November 30, 2012Publication date: June 5, 2014Applicant: United Technologies CorporationInventors: Francis Parnin, Paul H. Dolman, David M. Daley, Denman H. James, Richard W. Clark
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Patent number: 8066472Abstract: A lubrication system for a bearing assembly includes a fan shaft with a plurality of conduits, a first bearing rotatably supporting the fan shaft, and a second bearing rotatably supporting the fan shaft where the second bearing is axially spaced from the first bearing. The plurality of conduits includes at least a first conduit aligned with the first bearing and a second conduit aligned with the second bearing. A spray bar includes a plurality of supply orifices that direct lubricating fluid to the first and second bearings via at least the first and second conduits.Type: GrantFiled: November 6, 2007Date of Patent: November 29, 2011Assignee: United Technologies CorporationInventors: James B. Coffin, David M. Daley, Brady Walker
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Patent number: 7931436Abstract: Roller bearings, and struts and gas turbine engines using such bearings are provided. In this regard, a representative roller bearing for a gas turbine engine includes: a roller having a rolling surface and an end; a race having a flange and defining a raceway, the raceway terminating at the flange, the raceway being operative to receive the roller such that the rolling surface of the roller engages in rolling contact with the raceway; and a hard coating applied to the flange such that the end of the roller engages in sliding contact with the coating.Type: GrantFiled: September 12, 2007Date of Patent: April 26, 2011Assignee: United Technologies Corp.Inventors: Louis J. Dobek, Jr., David M. Daley
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Publication number: 20090317029Abstract: A bearing system includes an inner ring that surrounds an axis of rotation, an outer ring spaced radially outwards from the inner ring, and a cage that is positioned between the inner and outer rings to support a plurality of bearing elements. The inner ring includes an axial slot that extends in a direction along the axis of rotation. The inner ring also includes at least one radial side slot formed in at least one of a fore and aft end surface of the inner ring. The radial side slot directs lubricating fluid from the axial slot toward the cage to lubricate the plurality of bearing elements.Type: ApplicationFiled: June 10, 2008Publication date: December 24, 2009Inventors: Louis J. Dobek, David M. Daley, Mark A. Metzger
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Publication number: 20090208151Abstract: A bearing system includes a first bearing ring, a second bearing ring spaced radially outwards from the first bearing ring, and a bearing cage between the first bearing ring and the second bearing ring. The bearing cage includes a circumferential outer side, a circumferential inner side, and a plurality of circumferentially spaced retainer portions between an axially forward end and an axially trailing end. Roller elements are located in the plurality of retainer portions of the bearing cage. At least one fluid nozzle is axially spaced from the bearing cage for dispensing a fluid to the roller elements.Type: ApplicationFiled: February 20, 2008Publication date: August 20, 2009Inventors: Louis J. Dobek, David M. Daley, Mark A. Metzger
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Publication number: 20090116951Abstract: A lubrication system for a bearing assembly includes a fan shaft with a plurality of conduits, a first bearing rotatably supporting the fan shaft, and a second bearing rotatably supporting the fan shaft where the second bearing is axially spaced from the first bearing. The plurality of conduits includes at least a first conduit aligned with the first bearing and a second conduit aligned with the second bearing. A spray bar includes a plurality of supply orifices that direct lubricating fluid to the first and second bearings via at least the first and second conduits.Type: ApplicationFiled: November 6, 2007Publication date: May 7, 2009Inventors: James B. Coffin, David M. Daley, Brady Walker
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Publication number: 20090067985Abstract: Roller bearings, and struts and gas turbine engines using such bearings are provided. In this regard, a representative roller bearing for a gas turbine engine includes: a roller having a rolling surface and an end; a race having a flange and defining a raceway, the raceway terminating at the flange, the raceway being operative to receive the roller such that the rolling surface of the roller engages in rolling contact with the raceway; and a hard coating applied to the flange such that the end of the roller engages in sliding contact with the coating.Type: ApplicationFiled: September 12, 2007Publication date: March 12, 2009Applicant: UNITED TECHNOLOGIES CORP.Inventors: Louis J. Dobek, JR., David M. Daley
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Patent number: 7188888Abstract: A tonneau system for a cargo box of a pickup truck having a framework. The framework having a cross bow member for supporting a cover and being positionable generally over the cargo box of the pickup truck. The tonneau system further includes a latch assembly pivotally coupled to the cross bow member. The latch assembly is positionable in a latched position engagable with the cargo box of the pickup truck, an unlatched position disengagable with the cargo box of the pickup truck, and a nested position substantially retracted from the unlatched position and received within the cross bow member. The tonneau system may further include a biasing member that is substantially received within a portion of the latch assembly to improve consistent spring rates across the actuation range.Type: GrantFiled: May 31, 2005Date of Patent: March 13, 2007Inventors: Donald G. Wheatley, David M. Daley
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Patent number: 5993162Abstract: A fan blade (34) of a gas turbine engine (10) includes a pair of root rails (54) disposed on a bottom (56) of a dovetail root portion (44) thereof. The pair of root rails (54) has a wedge-shaped contour and is tapered in a decreasing cross-section from the leading edge (50) to the trailing edge (52). The root rails (54) provide a wide, stable base for the blade to minimize tangential motion during windmilling. A pair of slot rails (76) is provided on the base (70) of a dovetail-shaped slot (40) retaining the dovetail root portion (44) of the blade (34). The slot rails (76) of the dovetail slot (40) mate with the root rails (54) of the dovetail root portion (44).Type: GrantFiled: June 30, 1995Date of Patent: November 30, 1999Assignee: United Technologies CorporationInventors: Michael Weisse, David M. Daley, Harold R. Smart, Jr.
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Patent number: 5431542Abstract: A fan blade (34) of a gas turbine engine (10) includes a pair of root rails (54) disposed on a bottom (56) of a dovetail root portion (44) thereof. The pair of root rails (54) has a wedge-shaped contour and is tapered in a decreasing cross-section from the leading edge (50) to the trailing edge (52). The root rails (54) provide a wide, stable base for the blade to minimize tangential motion during windmilling. A pair of slot rails (76) is provided on the base (70) of a dovetail-shaped slot (40) retaining the dovetail root portion (44) of the blade (34). The slot rails (76) of the dovetail slot (40) mate with the root rails (54) of the dovetail root portion (44).Type: GrantFiled: April 29, 1994Date of Patent: July 11, 1995Assignee: United Technologies CorporationInventors: Michael Weisse, David M. Daley, Harold R. Smart, Jr.