Patents by Inventor Edward T. Leitkowski
Edward T. Leitkowski 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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Publication number: 20160222841Abstract: A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed.Type: ApplicationFiled: January 8, 2016Publication date: August 4, 2016Inventors: Joesph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski, Andrew Brzoska, Gheorghe Cosma
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Publication number: 20160076464Abstract: Lost motion engine valve actuation systems and methods of actuating engine valves are disclosed. Exemplary systems may include a valve train element, a first lost motion piston, an accumulator, and a hydraulic circuit, among other components. Variation of the first lost motion piston position may be carried out by placing the first lost motion piston in hydraulic communication with a trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the first lost motion piston position.Type: ApplicationFiled: November 20, 2015Publication date: March 17, 2016Inventors: Joseph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski, Andrew Brzoska, Gheorghe Cosma
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Publication number: 20160076463Abstract: Lost motion engine valve actuation systems and methods of actuating engine valves are disclosed. Exemplary systems may include a valve train element, a first lost motion piston, an accumulator, and a hydraulic circuit, among other components. Variation of the first lost motion piston position may be carried out by placing the first lost motion piston in hydraulic communication with a trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the first lost motion piston position.Type: ApplicationFiled: November 20, 2015Publication date: March 17, 2016Inventors: Joseph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski, Andrew Brzoska, Gheorghe Cosma
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Publication number: 20160076413Abstract: Lost motion engine valve actuation systems and methods of actuating engine valves are disclosed. Exemplary systems may include a valve train element, a first lost motion piston, an accumulator, and a hydraulic circuit, among other components. Variation of the first lost motion piston position may be carried out by placing the first lost motion piston in hydraulic communication with a trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the first lost motion piston position.Type: ApplicationFiled: November 20, 2015Publication date: March 17, 2016Inventors: Joseph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski, Andrew Brzoska, Gheorghe Cosma
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Publication number: 20160076414Abstract: Lost motion engine valve actuation systems and methods of actuating engine valves are disclosed. Exemplary systems may include a valve train element, a first lost motion piston, an accumulator, and a hydraulic circuit, among other components. Variation of the first lost motion piston position may be carried out by placing the first lost motion piston in hydraulic communication with a trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the first lost motion piston position.Type: ApplicationFiled: November 20, 2015Publication date: March 17, 2016Inventors: Joseph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski, Andrew Brzoska, Gheorghe Cosma
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Publication number: 20140311449Abstract: A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed.Type: ApplicationFiled: July 3, 2014Publication date: October 23, 2014Inventors: Joesph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski, Andrew Brzoska, Gheorghe Cosma
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Patent number: 8820276Abstract: A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed.Type: GrantFiled: February 4, 2011Date of Patent: September 2, 2014Assignee: Jacobs Vehicle Systems, Inc.Inventors: Joseph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski, Andrew Brzoska, Gheorghe Cosma
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Patent number: 8776738Abstract: A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed.Type: GrantFiled: December 23, 2013Date of Patent: July 15, 2014Assignee: Jacobs Vehicle Systems, IncInventors: Joesph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski, Andrew Brzoska, Gheorghe Cosma
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Publication number: 20140165937Abstract: A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed.Type: ApplicationFiled: December 23, 2013Publication date: June 19, 2014Applicant: JACOBS VEHICLE SYSTEMS, INC.Inventors: Joesph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski, Andrew Brzoska, Gheorghe Cosma
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Publication number: 20110197833Abstract: A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed.Type: ApplicationFiled: February 4, 2011Publication date: August 18, 2011Applicant: Jacobs Vehicle Systems, Inc.Inventors: Joesph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski, Andrew Brzoska, Gheorghe Cosma
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Patent number: 7059282Abstract: A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed.Type: GrantFiled: September 23, 2002Date of Patent: June 13, 2006Assignee: Jacobs Vehicle Systems, Inc.Inventors: Joseph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski
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Publication number: 20030098000Abstract: A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed.Type: ApplicationFiled: September 23, 2002Publication date: May 29, 2003Inventors: Joseph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski
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Patent number: 6510824Abstract: A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed.Type: GrantFiled: December 29, 2000Date of Patent: January 28, 2003Assignee: Diesel Engine Retarders, Inc.Inventors: Joseph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski
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Patent number: 6302370Abstract: A system for decelerating a linearly displaceable valve undergoing a closing motion is disclosed. The system includes a housing, a first hydraulic fluid chamber provided in said housing, and a slave piston for displacing the valve in response to the supply of hydraulic fluid to the first hydraulic fluid chamber. Deceleration of the valve may be accomplished by selectively throttling the release of hydraulic fluid in the first chamber to a second chamber. The hydraulic pressure in the second chamber opposes the closing motion of the valve, thereby slowing it gently for a valve seating event. Progressive throttling is used to maintain nearly constant hydraulic pressure in the second chamber during the seating event. The progressive throttling may be accomplished by selection of an appropriate throttling orifice size and shape, as well as an appropriate throttling profile for the orifice.Type: GrantFiled: August 26, 1999Date of Patent: October 16, 2001Assignee: Diesel Engine Retarders, Inc.Inventors: John A. Schwoerer, Edward T. Leitkowski
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Patent number: 5141269Abstract: A cylindrical lock assembly (20) includes an inside subassembly (22) and an outside subassemlby (24) which are assembled with a door (326). Each subassembly (22,24) includes a rose liner (26,38), a return spring cassette (28,40), a rose (30,42), a lever (32,46) and a lever insert (34,48). The inside subassembly (22) also includes a turn button (36) and the outside subassembly (24) includes a cylinder lock (44).A pair of sleeves (168,170) extend from opposite sides of the chassis (50) and are each formed with three slots which facilitate mounting of the levers (32,46) and the cylinder lock (44) thereon.Type: GrantFiled: October 12, 1990Date of Patent: August 25, 1992Assignee: Emhart Inc.Inventors: Mohammed A. Haq, Edward T. Leitkowski, Jr.
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Patent number: 5123682Abstract: A cylindrical lock assembly (20) includes an inside subassembly (22) and an outside subassembly (24) which are assembled with a door (326). Each subassembly (22,24) includes a rose liner (26,38), a return spring cassette (28,40), a rose (30,42), a lever (32,46) and a lever insert (34,48). The inside subassembly (22) also includes a turn button (36) and the outside subassembly (24) includes a cylinder lock (44).A pair of mounting blocks (258,260) are contained within the chassis (50) to facilitate threaded connection of the chassis to the rose liners (26,38) which are assembled on respective sides of the door (326) and thereby provide an anti-rotation mounting for the chassis.Type: GrantFiled: October 12, 1990Date of Patent: June 23, 1992Assignee: Emhart Inc.Inventors: James E. Robida, Edward T. Leitkowski, Jr.