Patents by Inventor Steven K. Mackenzie

Steven K. Mackenzie 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).

  • Patent number: 10125728
    Abstract: An air induction system includes a hood inlet duct having a first induction inlet and an air induction plenum assembly having a second induction inlet. The air induction system also includes an air box in fluid communication with the air induction plenum and the hood inlet duct. The air box defines an inner box cavity. The air induction system also includes a panel filter disposed inside the air box, wherein the panel filter divides the inner box cavity so that the first induction inlet and the second induction inlet are upstream of the panel filter.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: November 13, 2018
    Assignee: GM Global Technology Operations LLC
    Inventors: Steven K. Mackenzie, William C. Farrer, Jamie L. Hamilton, David W. Turner, Terry C. Bishop
  • Publication number: 20180298856
    Abstract: An air induction system includes a hood inlet duct having a first induction inlet and an air induction plenum assembly having a second induction inlet. The air induction system also includes an air box in fluid communication with the air induction plenum and the hood inlet duct. The air box defines an inner box cavity. The air induction system also includes a panel filter disposed inside the air box, wherein the panel filter divides the inner box cavity so that the first induction inlet and the second induction inlet are upstream of the panel filter.
    Type: Application
    Filed: April 12, 2017
    Publication date: October 18, 2018
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Steven K. Mackenzie, William C. Farrer, Jamie L. Hamilton, David W. Turner, Terry C. Bishop
  • Patent number: 9752542
    Abstract: A vehicle includes an air cleaner box assembly disposed within an engine compartment. The air cleaner box assembly includes a moveable shell portion and a stationary shell portion. The moveable shell portion includes an upper surface disposed adjacent a hood, and defines a filtered air chamber. The stationary shell portion is attached to a structure, and defines an unfiltered air chamber. A filter element is attached to and supported by the moveable shell portion. The filter element separates the filtered air chamber and the un-filtered air chamber. Each of a plurality of spring loaded guide members slideably connect the moveable shell portion and the stationary shell portion, and guide the moveable shell portion along a path relative to the stationary shell portion, between an expanded position and a compressed position.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: September 5, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Steven K. Mackenzie, Douglas L. Wickham, Steven R. Granke, Steven L. Williams, Brian R. Bauer
  • Patent number: 9062639
    Abstract: An air induction system includes a housing defining an inner cavity. The housing has a first wall with a first air inlet, a second wall with a second air inlet, and an air outlet for directing air to the vehicle engine. A panel filter is mounted within the housing and divides the inner cavity so that the first inlet and the second inlet are upstream of the panel filter and the outlet is downstream of the panel filter when air flows through the housing from either of the air inlets to the air outlet and through the panel filter from a first side of the filter to a second side of the filter. The first air inlet, the second air inlet, and the panel filter are positioned so that the first side is lower than the second side when the housing is installed in the vehicle.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: June 23, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Steven K. MacKenzie, Eric R. Tucker, Kevin J. Dunn, Michael G. Leffert, Hugo Figueroa Rosas, John P. Person
  • Patent number: 8485311
    Abstract: An air duct assembly supplies air from an air cleaner housing to an engine throttle and includes a first duct connected to the air cleaner housing and a second duct connected to the engine air intake. Open ends of the first and second ducts are spaced from one another and the second duct has a flared bell mouth at its open end. The second duct includes a sleeve that defines an attenuation chamber. A flexible bellows overlies the first and second ducts and the sleeve, and extends across the space between the first and second ducts to provide an airtight connection therebetween and flex during relative motion between the air cleaner housing and the engine air intake. A hydrocarbon adsorbing material can be housed within the attenuation chamber.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: July 16, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Steven K. Mackenzie, Eric R. Tucker
  • Publication number: 20120222641
    Abstract: An air duct assembly supplies air from an air cleaner housing to an engine throttle and includes a first duct connected to the air cleaner housing and a second duct connected to the engine air intake. Open ends of the first and second ducts are spaced from one another and the second duct has a flared bell mouth at its open end. The second duct includes a sleeve that defines an attenuation chamber. A flexible bellows overlies the first and second ducts and the sleeve, and extends across the space between the first and second ducts to provide an airtight connection therebetween and flex during relative motion between the air cleaner housing and the engine air intake. A hydrocarbon adsorbing material can be housed within the attenuation chamber.
    Type: Application
    Filed: March 4, 2011
    Publication date: September 6, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC.
    Inventors: Steven K. Mackenzie, Eric R. Tucker
  • Patent number: 8186746
    Abstract: An air dam assembly mounted under a front end of a vehicle includes a passively deployable air dam assembly. The passively deployable air dam assembly includes a passively deployable air dam having a front surface at least partially exposed to ram air when the vehicle is traveling in a forward direction, and a passive deployment assembly including at least one spring biasing the passively deployable air dam into a retracted position, with the passive deployment assembly engaging the passively deployable air dam to allow the passively deployable air dam to move, against the bias of the spring, from the retracted position to a deployed position closer to ground under the vehicle when a forward speed of the vehicle reaches or exceeds a predetermined activation speed.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: May 29, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Steven K. Mackenzie, James L. Luttinen, Scott P. Charnesky
  • Publication number: 20110187151
    Abstract: An air dam assembly mounted under a front end of a vehicle includes a passively deployable air dam assembly. The passively deployable air dam assembly includes a passively deployable air dam having a front surface at least partially exposed to ram air when the vehicle is traveling in a forward direction, and a passive deployment assembly including at least one spring biasing the passively deployable air dam into a retracted position, with the passive deployment assembly engaging the passively deployable air dam to allow the passively deployable air dam to move, against the bias of the spring, from the retracted position to a deployed position closer to ground under the vehicle when a forward speed of the vehicle reaches or exceeds a predetermined activation speed.
    Type: Application
    Filed: February 1, 2010
    Publication date: August 4, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Steven K. Mackenzie, James L. Luttinen, Scott P. Charnesky
  • Publication number: 20090162138
    Abstract: A longitudinal member assembly having a primary loading direction, including an interior longitudinal member and an exterior longitudinal member, and a method of assembly, is disclosed. The interior longitudinal member has a boxed-section shape including a first side and an opposed second side parallel to the first side. The exterior longitudinal member has a boxed shape including a first exterior side and an opposed second exterior side parallel to the first exterior side. The interior member is telescopically received in the exterior member creating an overlap area, the first exterior side includes a first side welding hole, and the second exterior side includes a second side welding hole. A first side hole weld extends around the first side welding hole, and a second side hole weld extends around the second side welding hole. The first and second holes are parallel to the primary loading direction.
    Type: Application
    Filed: December 19, 2007
    Publication date: June 25, 2009
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: FRANK BURGER, LEN V. PESCHANSKY, PAOLO V. SARTI, DAVID L. VON KNORRING, STEVEN K. MACKENZIE
  • Patent number: 7543384
    Abstract: A variable thickness member for a vehicle includes a first portion having a first thickness and a second portion extending from the first portion having a second thickness. The first thickness is different from the second thickness and the first thickness and the second thickness are integral, unitary, and one piece.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: June 9, 2009
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Chi-Mou Ni, Steven K. Mackenzie
  • Patent number: 6183013
    Abstract: A vehicle frame has side rails which support the suspension system and body of the vehicle. The side rails have a rectangular cross-section with the end sections thereof having predetermined wall thicknesses and rectangular size, and a center section having a thinner wall thickness and a larger height dimension of the rectangular cross-section. A transition section connects respective end sections with the center section. The transition section has rectangular cross-sections and wall thickness at the respective junctures which matches the adjoining section.
    Type: Grant
    Filed: July 26, 1999
    Date of Patent: February 6, 2001
    Assignee: General Motors Corporation
    Inventors: Steven K. Mackenzie, Ferdous M. Ghazi, Chi-Mou Ni, John Roby