Patents by Inventor John McGahey
John McGahey 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: 9879748Abstract: A shock absorber has a housing with a piston rod assembly disposed therein. A first rod guide member is secured within a first portion of the housing so as to be concentrically disposed about at least a portion of the piston rod assembly. A second rod guide member is secured within the housing adjacent the first rod guide member so as to be concentrically disposed about at least another portion of the piston rod assembly. A digital valve assembly is disposed within the second rod guide member and fluidly couples chambers within the shock absorber.Type: GrantFiled: March 13, 2014Date of Patent: January 30, 2018Assignee: Tenneco Automotive Operating Company Inc.Inventors: Matthew L. Roessle, Thomas P. Mallin, John McGahey, Jeffrey T. Gardner
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Patent number: 9441699Abstract: A shock absorber for a vehicle includes a pressure tube that defines a fluid chamber. A piston disposed within the fluid chamber divides the fluid chamber into an upper working chamber and a lower working chamber. The piston defines a compression passage and a rebound passage which extend through the piston between the upper working chamber and the lower working chamber. A valve disc assembly engages the piston and controls the flow of fluid between the upper working chamber and the lower working chamber. The valve disc assembly includes a bleed disc that defines an orifice with a substantially non-linear contour. The orifice extends to an outer diameter of the bleed disc, and forms a bleed channel between the upper working chamber and the lower working chamber.Type: GrantFiled: May 12, 2014Date of Patent: September 13, 2016Assignee: Tenneco Automotive Operating Company Inc.Inventors: Tim Lawler, Chad Rummel, Elizabeth Robbins, Daniel T. Keil, Jeroen K. Paenhuysen, John McGahey, Dajun Zhang
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Patent number: 9285011Abstract: A shock absorber includes a pressure sensitive valve assembly that controls fluid flow through the pressure sensitive valve assembly based upon the velocity of the piston assembly in the shock absorber. The pressure sensitive valve assembly restricts fluid flow as the velocity of the piston in a compression stroke increases to increase the damping loads provided by the shock absorber. A secondary valve assembly controls fluid flow through the pressure sensitive valve assembly when the pressure sensitive valve assembly is in a closed position.Type: GrantFiled: July 9, 2014Date of Patent: March 15, 2016Assignee: Tenneco Automotive Operating Company Inc.Inventors: Karl Kazmirski, Darrell G. Breese, Matthew L. Roessle, John McGahey
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Patent number: 9163691Abstract: A shock absorber has a housing with a piston rod assembly disposed therein. A first rod guide member is secured within a first portion of the housing so as to be concentrically disposed about at least a portion of the piston rod assembly. A second rod guide member is secured within the housing adjacent the first rod guide member so as to be concentrically disposed about at least another portion of the piston rod assembly. An electronically controlled valve assembly is disposed within the second rod guide member and is in communication with the first rod guide member.Type: GrantFiled: July 22, 2013Date of Patent: October 20, 2015Assignee: Tenneco Automotive Operating Company Inc.Inventors: Matthew L. Roessle, Karl C. Kazmirski, Thomas P. Mallin, John McGahey, Timothy Bombrys, David R. Blankenship, Jeroen K. Paenhuysen
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Patent number: 9033121Abstract: A shock absorber includes a pressure sensitive valve assembly that controls fluid flow through the pressure sensitive valve assembly based upon the velocity of the piston assembly in the shock absorber. The pressure sensitive valve assembly restricts fluid flow as the velocity of the piston in a compression stroke increases to increase the damping loads provided by the shock absorber.Type: GrantFiled: July 2, 2009Date of Patent: May 19, 2015Assignee: Tenneco Automotive Operating Company Inc.Inventors: Karl C. Kazmirski, Darrell G. Breese, Matthew L. Roessle, John McGahey
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Publication number: 20140332332Abstract: A shock absorber for a vehicle includes a pressure tube that defines a fluid chamber. A piston disposed within the fluid chamber divides the fluid chamber into an upper working chamber and a lower working chamber. The piston defines a compression passage and a rebound passage which extend through the piston between the upper working chamber and the lower working chamber. A valve disc assembly engages the piston and controls the flow of fluid between the upper working chamber and the lower working chamber. The valve disc assembly includes a bleed disc that defines an orifice with a substantially non-linear contour. The orifice extends to an outer diameter of the bleed disc, and forms a bleed channel between the upper working chamber and the lower working chamber.Type: ApplicationFiled: May 12, 2014Publication date: November 13, 2014Applicant: Tenneco Automotive Operating Company Inc.Inventors: Tim Lawler, Chad Rummel, Elizabeth Robbins, Daniel T. Keil, Jeroen K. Paenhuysen, John McGahey, Dajun Zhang
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Publication number: 20140318908Abstract: A shock absorber includes a pressure sensitive valve assembly that controls fluid flow through the pressure sensitive valve assembly based upon the velocity of the piston assembly in the shock absorber. The pressure sensitive valve assembly restricts fluid flow as the velocity of the piston in a compression stroke increases to increase the damping loads provided by the shock absorber. A secondary valve assembly controls fluid flow through the pressure sensitive valve assembly when the pressure sensitive valve assembly is in a closed position.Type: ApplicationFiled: July 9, 2014Publication date: October 30, 2014Inventors: Karl Kazmirski, Darrell G. Breese, Matthew L. Roessle, John McGahey
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Publication number: 20140262652Abstract: A shock absorber has a housing with a piston rod assembly disposed therein. A first rod guide member is secured within a first portion of the housing so as to be concentrically disposed about at least a portion of the piston rod assembly. A second rod guide member is secured within the housing adjacent the first rod guide member so as to be concentrically disposed about at least another portion of the piston rod assembly. An electronically controlled valve assembly is disposed within the second rod guide member and is in communication with the first rod guide member.Type: ApplicationFiled: July 22, 2013Publication date: September 18, 2014Applicant: TENNECO AUTOMOTIVE OPERATING COMPANY INC.Inventors: Matthew L. ROESSLE, Karl C. KAZMIRSKI, Thomas P. MALLIN, John MCGAHEY, Timothy BOMBRYS, David R. BLANKENSHIP, Jeroen K. PAENHUYSEN
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Publication number: 20140262654Abstract: A shock absorber has a housing with a piston rod assembly disposed therein. A first rod guide member is secured within a first portion of the housing so as to be concentrically disposed about at least a portion of the piston rod assembly. A second rod guide member is secured within the housing adjacent the first rod guide member so as to be concentrically disposed about at least another portion of the piston rod assembly. A digital valve assembly is disposed within the second rod guide member and fluidly couples chambers within the shock absorber.Type: ApplicationFiled: March 13, 2014Publication date: September 18, 2014Applicant: Tenneco Automotive Operating Company Inc.Inventors: Matthew L. Roessle, Thomas P. Mallin, John McGahey, Jeffrey T. Gardner
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Publication number: 20100078275Abstract: A shock absorber includes a pressure sensitive valve assembly that controls fluid flow through the pressure sensitive valve assembly based upon the velocity of the piston assembly in the shock absorber. The pressure sensitive valve assembly restricts fluid flow as the velocity of the piston in a compression stroke increases to increase the damping loads provided by the shock absorber.Type: ApplicationFiled: July 2, 2009Publication date: April 1, 2010Applicant: Tenneco Automotive Operating Company, Inc.Inventors: Karl C. Kazmirski, Darrell G. Breese, Matthew L. Roessle, John McGahey