Patents by Inventor James A. Subatch
James A. Subatch 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: 9732698Abstract: A cylinder liner for an engine is disclosed. The cylinder liner may include a cylindrical sleeve with an inner surface and an outer surface extending axially from a first end to a second end. The cylinder liner may also include a void disposed in the first end and concentric to the inner surface of the cylindrical sleeve.Type: GrantFiled: December 19, 2014Date of Patent: August 15, 2017Assignee: Caterpillar Inc.Inventors: Christopher L. Batta, James A. Subatch, Jr., Amit Prakash Srivastava
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Patent number: 9611806Abstract: A piston for an internal combustion engine includes a piston body forming a crown portion and a skirt portion. The skirt portion includes a bore that receives a pin for connecting the piston to a connecting rod, and the crown portion forms a bowl surrounded by a flat crown surface having an annular shape and disposed along a plane. The bowl and the flat crown surface meet along a circular edge surrounding a rim of the bowl. The piston further includes an annular protrusion disposed within the bowl adjacent the rim. The annular protrusion has a generally convex shape in cross section created by an upper, inwardly extending surface and a lower, inwardly extending surface that meet along a convex apex. The piston further includes an airfoil surface formed in the flat crown surface. The airfoil surface has a convex shape and extends annularly around the rim of the bowl.Type: GrantFiled: November 18, 2014Date of Patent: April 4, 2017Assignee: Caterpillar Inc.Inventors: James A. Subatch, Jr., Matthew I. Rowan, Scott P. Coulier, Ashutosh Katari, Nikhil O. Lulla, James C. Weber, Steven C. Zoz
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Publication number: 20160177862Abstract: A cylinder liner for an engine is disclosed. The cylinder liner may include a cylindrical sleeve with an inner surface and an outer surface extending axially from a first end to a second end. The cylinder liner may also include a void disposed in the first end and concentric to the inner surface of the cylindrical sleeve.Type: ApplicationFiled: December 19, 2014Publication date: June 23, 2016Applicant: CATERPILLAR INC.Inventors: Christopher L. Batta, James A. Subatch, JR., Amit Prakash Srivastava
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Publication number: 20160138519Abstract: A piston for an internal combustion engine includes a piston body forming a crown portion and a skirt portion. The skirt portion includes a bore that is arranged to receive a pin for connecting the piston to a connecting rod. The crown portion forms a bowl surrounded by a flat crown surface having an annular shape. The bowl and the flat crown surface meet along a circular edge surrounding a rim of the bowl. The piston further includes an annular protrusion disposed within the bowl adjacent the rim. The annular protrusion has a generally convex shape in cross section created by an upper, inwardly extending surface and a lower, inwardly extending surface that meet along a convex apex. The piston further includes a recirculation surface formed within the bowl adjacent the annular protrusion. The recirculation surface meets the lower, inwardly extending surface along an inflection edge.Type: ApplicationFiled: November 18, 2014Publication date: May 19, 2016Applicant: Caterpillar Inc.Inventors: James A. Subatch, Jr., Matthew I. Rowan, Scott P. Coulier, Ashutosh Katari, Nikhil O. Lulla, James C. Weber, Steven C. Zoz
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Publication number: 20160138517Abstract: A piston for an internal combustion engine includes a piston body forming a crown portion and a skirt portion. The skirt portion includes a bore that is arranged to receive a pin for connecting the piston to a connecting rod. The crown portion forms a bowl surrounded by a flat crown surface having an annular shape. The bowl and flat crown surface meet along a circular edge surrounding a rim of the bowl. The piston further includes an annular protrusion disposed within the bowl adjacent the rim. The annular protrusion has a generally convex shape in cross section that is created by an upper, inwardly extending surface and a lower, inwardly extending surface, which meet along a convex apex.Type: ApplicationFiled: November 18, 2014Publication date: May 19, 2016Applicant: Caterpillar Inc.Inventors: Ashutosh Katari, Matthew I. Rowan, James A. Subatch, JR., James C. Weber, Steven C. Zoz, Nikhil O. Lulla, Scott P. Coulier
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Publication number: 20160138520Abstract: A piston for an internal combustion engine includes a piston body forming a crown portion and a skirt portion. The skirt portion includes a bore that receives a pin for connecting the piston to a connecting rod, and the crown portion forms a bowl surrounded by a flat crown surface having an annular shape and disposed along a plane. The bowl and the flat crown surface meet along a circular edge surrounding a rim of the bowl. The piston further includes an annular protrusion disposed within the bowl adjacent the rim. The annular protrusion has a generally convex shape in cross section created by an upper, inwardly extending surface and a lower, inwardly extending surface that meet along a convex apex. The piston further includes an airfoil surface formed in the flat crown surface. The airfoil surface has a convex shape and extends annularly around the rim of the bowl.Type: ApplicationFiled: November 18, 2014Publication date: May 19, 2016Applicant: CATERPILLAR INC.Inventors: James A. Subatch, Jr., Matthew I. Rowan, Scott P. Coulier, Ashutosh Katari, Nikhil O. Lulla, James C. Weber, Steven C. Zoz
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Publication number: 20160138518Abstract: A piston for an internal combustion engine includes a piston body forming a crown portion and a skirt portion, the skirt portion including a bore that is arranged to receive a pin for connecting the piston to a connecting rod, the crown portion forming a bowl surrounded by a flat crown surface having an annular shape and disposed along a plane, the bowl and the flat crown surface meeting along a circular edge surrounding a rim of the bowl, and an airfoil surface formed in the flat crown surface, the airfoil surface having a convex shape and extending annularly around the rim of the bowl.Type: ApplicationFiled: November 18, 2014Publication date: May 19, 2016Applicant: CATERPILLAR INC.Inventors: James A. Subatch, JR., Ashutosh Katari, Nikhil O. Lulla, Scott P. Coulier, Matthew I. Rowan, James C. Weber, Steven C. Zoz
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Publication number: 20160097340Abstract: A cylinder liner assembly is disclosed for use with an engine. The cylinder liner assembly may have a liner with a hollow, generally cylindrical body extending from a top end to a bottom end along a longitudinal axis. The cylinder liner assembly may also have a seal disposed around the liner at the top end and an anti-polishing ring disposed within the top end of the liner. The anti-polishing ring may have an annular groove formed on an outer surface to provide an air gap between the anti-polishing ring and the liner. The annular groove may axially overlap at least a portion of the seal.Type: ApplicationFiled: October 3, 2014Publication date: April 7, 2016Applicant: CATERPILLAR INC.Inventors: Bradley L. Morgan, James A. Subatch, JR., Michael James Pollard
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Patent number: 9234451Abstract: A piston for a compression ignition internal combustion engine includes a piston body having a combustion face defining a combustion bowl, and the combustion face including a compound bowl surface and a compound rim surface. The combustion face is profiled to balance a combustion efficiency property of the piston with emissions properties of the piston. A ratio of a diameter of the combustion bowl to a diameter of the cylinder bowl bore is from 0.68 to 0.74. Other dimensional and proportional features of the piston support low smoke and NOx production during operation.Type: GrantFiled: May 13, 2013Date of Patent: January 12, 2016Assignee: Caterpillar Inc.Inventors: Aaron Karch, David A. Pierpont, Daniel Lang, James A. Subatch
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Publication number: 20130239925Abstract: A piston for a compression ignition internal combustion engine includes a piston body having a combustion face defining a combustion bowl, and the combustion face including a compound bowl surface and a compound rim surface. The combustion face is profiled to balance a combustion efficiency property of the piston with emissions properties of the piston. A ratio of a diameter of the combustion bowl to a diameter of the cylinder bowl bore is from 0.68 to 0.74. Other dimensional and proportional features of the piston support low smoke and NOx production during operation.Type: ApplicationFiled: May 13, 2013Publication date: September 19, 2013Applicant: Caterpillar, Inc.Inventors: Aaron Karch, David A. Pierpont, Daniel Lang, James A. Subatch, Jr.