Patents by Inventor Edwin H. Langewisch
Edwin H. Langewisch 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: 9714587Abstract: A bridge assembly is disclosed for use with an internal combustion engine. The bridge assembly may have a valve bridge, a cylindrical housing disposed within the valve bridge, and a plunger disposed in the cylindrical housing and protruding from the valve bridge. The bridge assembly may also have a valve housing, a post located inside the valve housing, a plurality of obliquely angled ports passing through a straight annular wall portion of the valve housing, and a plurality of radially oriented ports passing through a tapered annular wall portion of the housing. The bridge assembly may further have a valve seat disposed at least partially inside the plunger, a ball disposed within the valve housing and movable between a distal end of the post and the valve seat, a first spring disposed over the post, and a second spring disposed within the cylindrical housing.Type: GrantFiled: January 13, 2015Date of Patent: July 25, 2017Assignee: Caterpillar Inc.Inventors: David Andrew Cyborski, John Stephen Pipis, Jr., Edwin H. Langewisch, Sanjay Kumar
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Patent number: 9523291Abstract: A valve actuation system is disclosed for an engine. The system may have at least one gas exchange valve, a rocker shaft, a camshaft, a rocker arm connected to the rocker shaft and operatively engaged with the camshaft, a valve bridge engaged with the at least one gas exchanger valve, a lash adjuster disposed in the valve bridge, and a button configured to slide on the valve bridge. The system may further include a pin fluidly connecting the rocker arm to the button and having an elongated cylindrical shaft with a first open end inside the rocker arm and a second end inside the button. The pin may also have a head connected to and a reservoir formed in the elongated cylindrical shaft. The pin may further have passages extending from the bore of the rocker arm to the reservoir, and s passage extending from the reservoir through the head.Type: GrantFiled: March 18, 2015Date of Patent: December 20, 2016Assignee: Caterpillar Inc.Inventors: Charles F. Coffey, Edwin H. Langewisch, Ashwin A. Hattiangadi, David A. Cyborski, John S. Pipis, Jr., Kevin D. Yoder
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Publication number: 20160273416Abstract: A valve actuation system is disclosed for an engine. The system may have at least one gas exchange valve, a rocker shaft, a camshaft, a rocker arm connected to the rocker shaft and operatively engaged with the camshaft, a valve bridge engaged with the at least one gas exchanger valve, a lash adjuster disposed in the valve bridge, and a button configured to slide on the valve bridge. The system may further include a pin fluidly connecting the rocker arm to the button and having an elongated cylindrical shaft with a first open end inside the rocker arm and a second end inside the button. The pin may also have a head connected to and a reservoir formed in the elongated cylindrical shaft. The pin may further have passages extending from the bore of the rocker arm to the reservoir, and s passage extending from the reservoir through the head.Type: ApplicationFiled: March 18, 2015Publication date: September 22, 2016Applicant: Caterpillar Inc.Inventors: Charles F. COFFEY, Edwin H. LANGEWISCH, Ashwin A. HATTIANGADI, David A. CYBORSKI, John S. PIPIS, JR., Kevin D. YODER
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Publication number: 20160201524Abstract: A bridge assembly is disclosed for use with an internal combustion engine. The bridge assembly may have a valve bridge, a cylindrical housing disposed within the valve bridge, and a plunger disposed in the cylindrical housing and protruding from the valve bridge. The bridge assembly may also have a valve housing, a post located inside the valve housing, a plurality of obliquely angled ports passing through a straight annular wall portion of the valve housing, and a plurality of radially oriented ports passing through a tapered annular wall portion of the housing. The bridge assembly may further have a valve seat disposed at least partially inside the plunger, a ball disposed within the valve housing and movable between a distal end of the post and the valve seat, a first spring disposed over the post, and a second spring disposed within the cylindrical housing.Type: ApplicationFiled: January 13, 2015Publication date: July 14, 2016Applicant: CATERPILLAR INC.Inventors: David Andrew CYBORSKI, John Stephen PIPIS, JR., Edwin H. LANGEWISCH, Sanjay KUMAR
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Patent number: 8915224Abstract: The present disclosure relates to shims 10, 24 adapted for placement between a rocker shaft 42 and rocker shaft mounts 62, 64. The rocker shaft mounts 62, 64 project from the cylinder head 60 of an internal combustion engine. The shims 10, 24 are composed of a copper alloy, preferably bronze.Type: GrantFiled: December 18, 2010Date of Patent: December 23, 2014Assignee: Caterpillar Inc.Inventors: Edwin H. Langewisch, Lloyd E. Thompson
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Publication number: 20140283774Abstract: A method of lubricating one or more valve train (100) components includes delivering a lubricating fluid to the inner cavity (156) of a fluid collecting member (152) through a radially extending discharge portion (182) of a fluid passage (176) in a rocker arm insert. The insert fluid passage (176) is in fluid communication with a lubricating fluid source to dispense a controlled amount of lubricating fluid to one or more valve train components during operation of an engine. The radially extending discharge portion of the fluid passage in the insert may be positioned adjacent to a spherical end cap that is received in the inner cavity of the fluid collecting member.Type: ApplicationFiled: March 22, 2013Publication date: September 25, 2014Applicant: Caterpillar Inc.Inventor: Edwin H. Langewisch
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Publication number: 20120152196Abstract: The present disclosure relates to shims 10, 24 adapted for placement between a rocker shaft 42 and rocker shaft mounts 62, 64. The rocker shaft mounts 62, 64 project from the cylinder head 60 of an internal combustion engine. The shims 10, 24 are composed of a copper alloy, preferably bronze.Type: ApplicationFiled: December 18, 2010Publication date: June 21, 2012Applicant: Caterpillar Inc.Inventors: Edwin H. Langewisch, Lloyd E. Thompson
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Publication number: 20090038572Abstract: Cam actuated systems, such as valve trains for an engine, typically bring cam lobe action to the engine valve via a linkage that includes a cam actuated roller assembly which may be either a rocker or a lifter. These cam actuated rocker assemblies include a housing with a pair of arms with roller support bores there through. A roller support pin is received in the roller support bores, and rotationally supports a roller mounted about the roller pin and between the arms of the housing. The roller pin may include a relatively hard and inexpensive core, such as steel, cladded with a relatively soft more expensive metal, such as bronze.Type: ApplicationFiled: August 9, 2007Publication date: February 12, 2009Inventors: Edwin H. Langewisch, Arthur S. Lindell
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Patent number: 6895939Abstract: A clamping assembly for clamping a fuel injector into a fuel injector bore located in cylinder head of an engine includes a housing having a housing opening, connectors coupling the housing to the cylinder head, and a compression spring. The compression spring is located in the housing opening, operably coupled to a top of the fuel injector, and axially aligned with a longitudinal axis of the fuel injector.Type: GrantFiled: May 9, 2003Date of Patent: May 24, 2005Assignee: Caterpillar IncInventors: DeForest C. Gould, Werner H. Koeslin, Edwin H. Langewisch, Judson R. Bruce
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Publication number: 20040118383Abstract: A clamping assembly for clamping a fuel injector into a fuel injector bore located in cylinder head of an engine includes a housing having a housing opening, connectors coupling the housing to the cylinder head, and a compression spring. The compression spring is located in the housing opening, operably coupled to a top of the fuel injector, and axially aligned with a longitudinal axis of the fuel injector.Type: ApplicationFiled: May 9, 2003Publication date: June 24, 2004Inventors: DeForest C. Gould, Werner H. Koeslin, Edwin H. Langewisch, Judson R. Bruce
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Patent number: 6647953Abstract: A volume reducer for a hydraulic system, particularly useful for low pressure hydraulic systems such as used in engine compression braking systems. The hydraulic system has an actuator and a pressurizer, with a hydraulic line interconnecting the actuator and the pressurizer. A substantially straight section of the hydraulic line is provided, and a slidable body is provided in the substantially straight section. The body slides in the hydraulic line in response to pressure changes in the hydraulic line, and occupies hydraulic line volume, to stiffen the hydraulic system and reduce system sluggishness.Type: GrantFiled: August 30, 2001Date of Patent: November 18, 2003Assignee: Caterpillar IncInventor: Edwin H. Langewisch