Patents Represented by Attorney Kathryn A. Marra
  • Patent number: 7055679
    Abstract: A reconfigurable pallet that supports a structure includes a base and a modular stanchion. The modular stanchion is magnetically attachable to the base along x and y axes relative to a top surface of the base. The modular stanchion includes a support element that has a height along a z axis that is transverse to the x and y axes. The support element supports the structure.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: June 6, 2006
    Assignee: General Motors Corporation
    Inventors: Chi-Hung Shen, Yhu-Tin Lin
  • Patent number: 7054041
    Abstract: An image sensor having an array of pixel elements constructed using a two level polysilicon CMOS process that provides individual addressability and a non-destructive readout of the pixels. The pixel elements each includes a substrate, an insulating layer formed on the substrate, a collection capacitor electrode, a transfer electrode, a readout capacitor electrode, and a readout transistor. The transfer electrode is located between the collection and readout capacitor electrodes and all three electrodes are electrically isolated from the substrate and each other by the insulating layer. The collection capacitor electrode and insulating layer are transparent so that incident light can pass through these elements and be absorbed by the substrate. A bias voltage is applied to the collection electrode to form a depletion region in the substrate where photoelectrically generated charge is collected.
    Type: Grant
    Filed: December 6, 2001
    Date of Patent: May 30, 2006
    Assignee: General Motors Corporation
    Inventors: Charles Neil Stevenson, Frank J. Schauerte, John Richard Troxell
  • Patent number: 7051849
    Abstract: A magnetorheological damper device is provided having an increased shear interface area per unit volume of the device, which enhances the stroking force of the damper. The damper generally includes a cylindrically shaped housing; a magnetorheological fluid disposed in the cylindrically shaped housing; a piston assembly disposed within the cylindrically shaped housing in sliding engagement with the cylindrically shaped housing defining a first chamber and a second chamber, wherein the piston assembly comprises a plurality of cylindrically shaped fluid passageways extending from the first chamber to the second chamber, and an electromagnet; and a power supply in electrical communication with the electromagnet.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: May 30, 2006
    Assignee: General Motors Corporation
    Inventors: Alan Lampe Browne, Nancy L. Johnson, Chandra Sekhar Namuduri
  • Patent number: 7053330
    Abstract: A method of welding and a projection weld bond system is disclosed. A first workpiece is provided that is made of a material that conducts electricity, and a second workpeiece is provided that is made of a material that conducts electricity and has a plurality of projections formed therein. A materail is applied between each projections of plurality of projections, the material having electrical conductivity that is lower than the conductivity of the second workpiece. An area of the first workpiece is disposed at the plurality of projections of the second workpiece, and electricity is conducted through the first workpiece and through at least one of the plurality of projections of the second workpiece.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: May 30, 2006
    Assignee: General Motors Corporation
    Inventors: Pei-Chung Wang, Robin Stevenson
  • Patent number: 7052587
    Abstract: In one aspect, the invention provides a photoelectrochemical (PEC) electrode or photoelectrode for use in splitting water by electrolysis. The photoelectrode has an electrically conductive surface in contact with an electrolyte solution. This surface is a doped tin oxide layer, which is in electrical contact with the semiconductor solar cell material of the PEC photoelectrode. In a variation of the present invention, another layer of metal oxide having transparent, anti-reflective, and conductive properties is disposed between the doped tin oxide layer and the semiconductor material.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: May 30, 2006
    Assignee: General Motors Corporation
    Inventors: Thomas L Gibson, Nelson A Kelly
  • Patent number: 7051522
    Abstract: A method for controlling temperature of a catalytic converter in an automobile exhaust system is disclosed. The method includes establishing a reference temperature for the catalytic converter, distributing a stream of exhaust gases through the catalytic converter, obtaining a measured temperature of the catalytic converter and converting thermal energy from the stream of exhaust gases into electrical energy when the measured temperature exceeds the reference temperature. An apparatus for controlling temperature of a catalytic converter in an automobile exhaust system is also disclosed.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: May 30, 2006
    Assignee: General Motors Corporation
    Inventors: Jihui Yang, Mei Cai, Francis R. Stabler
  • Patent number: 7048880
    Abstract: A molding process for a composite article uses a textured film layer to shape the surface of the composite article. The film layer is placed in the mold with the textured film surface exposed and a composite material is placed over the textured film surface. Preferably, the film layer is vacuum-formed onto the mold to take the shape of the mold. As it cures, the composite article takes the shape of the textured film layer to form a textured article surface. After demolding, the film layer adheres to the article as a protective coating, but can be readily removed from the article to expose an underlying textured surface of the article.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: May 23, 2006
    Assignee: General Motors Corporation
    Inventors: Hamid Ghavami Kia, Peter Herbert Foss, John Neal Owens, Terrence James Wathen
  • Patent number: 7048816
    Abstract: A magnesium, manganese and copper-containing aluminum alloy sheet material suitable for use in high elongation forming processes is produced according to an improved thermomechanical process. The sheet material is produced by continuous casting with an as-cast gage of 5 to 35 millimeters and immediately hot rolling with a final strip exit temperature between 200° C. and 350° C. and then coiling. The hot rolled coil is annealed at 450–560° C. to homogenize the microstructure. After cooling to ambient temperature, the coil is cold rolled to desired sheet thickness with a net gage reduction of 50–90 %. After suitable recrystallization of the cold worked microstructure the sheet is ready for hot, high elongation forming.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: May 23, 2006
    Assignee: General Motors Corporation
    Inventors: Ravi Verma, Sooho Kim
  • Patent number: 7049261
    Abstract: A zeolite catalyst and a process for preparing a zeolite catalyst which is both capable of catalyzing the removal of nitrogen oxides from a gaseous medium across a broad temperature range and is operationally and hydrothermally stable at high reaction temperatures. The zeolite catalyst includes a zeolite carrier having a mole ratio of typically from about 14 to about 95 and copper ions supported on the zeolite carrier. The zeolite catalyst is prepared by providing a zeolite carrier, reacting copper with the zeolite carrier by carrying out an ion exchange reaction in a cupric salt aqueous solution at a temperature of between about 4° C. and room temperature (25° C.), and then drying and calcining the catalyst.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: May 23, 2006
    Assignees: General Motors Corporation, Pohang University of Science and Technology
    Inventors: In-Sik Nam, Sung Dae Yim, Joon Hyun Baik, Se Hyuck Oh, Byong Kwon Cho
  • Patent number: 7047779
    Abstract: A method for forming sheet metal articles, such as automotive body panels, having complex curvatures. Opposing, complementary, pre-form and finish-form tools are used in a single press. A sheet of hot blow-formable sheet metal alloy, heated to a forming temperature, is placed between the tools. The pre-forming tool is lowered to a first stage closed position thereby trapping edges of the sheet between binder surfaces of the tools. The sheet is first stretched against the pre-form tool using pressurized gas to form a pre-form that undergoes most of the metal stretching required for the final part shape. Then the finish-form tool is pivotably advanced into a second stage closed position. The pre-form is displaced away from the pre-form tool and hot plastically formed against the opposing finish-form tool with pressurized gas to obtain the final sheet metal part shape. The finish-form tool is then pivotably retracted so as to avoid die lock or part interference conditions.
    Type: Grant
    Filed: January 12, 2004
    Date of Patent: May 23, 2006
    Assignee: General Motors Corporation
    Inventors: Gary A. Kruger, Chongmin Kim, Mark G. Konopnicki
  • Patent number: 7044888
    Abstract: A control strategy is provided for controlling engagement of a clutch during vehicle launch. A feed-back input command and a feed-forward input command are utilized and summed to determine a clutch control command. The feed back input command uses a reference slip profile having a low speed portion and a high speed portion. In the low speed portion, the slip is a function of engine speed. In the high speed portion, the slip is a function of transmission output speed or vehicle speed.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: May 16, 2006
    Assignee: General Motors Corporation
    Inventors: Chunhao J. Lee, Kumaraswamy V. Hebbale
  • Patent number: 7040688
    Abstract: A vehicle door includes an inner panel having strengthening corrugations to function as an impact beam, thereby negating the need for a separate impact beam. The inner panel is preferably characterized by a generally concave shape to increase vehicle interior space compared to prior art doors. A forming technique employing fluid pressure is preferably employed to form the inner panel.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: May 9, 2006
    Assignee: General Motors Corporation
    Inventors: Tommy E. White, Adrian B. Chernoff
  • Patent number: 7040280
    Abstract: A spark ignition enhancer is provided in a combustion chamber of a spark ignition direct injection engine. The combustion chamber includes a fuel injector operable to spray a fuel plume into the chamber near a spark gap. The ignition enhancer includes a diversion element that extends into the fuel plume, between the fuel injector and the spark gap, to divert some of the fuel spray toward the spark gap to provide a spark ignitable air-fuel mixture at the spark gap, located outside of the spray plume. The diversion element may be mounted on a spark plug or on an adjacent element. The ignition enhancer improves ignitability by breaking up droplets in the spray plume, enhancing fuel vaporization, and diverting some fuel vapor to a spark gap outside the spray plume or away from a spark gap in the spray plume, so that liquid fuel at the gap is reduced, small scale turbulence is increased and gradients in fuel vapor distribution at the gap are reduced.
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: May 9, 2006
    Assignee: General Motors Corporation
    Inventor: Michael C. Drake
  • Patent number: 7041027
    Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least eight forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets having seven torque-transmitting mechanisms and a fixed interconnecting member. The powertrain includes an engine and torque converter that is continuously connected to at least one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The seven torque-transmitting mechanisms provide interconnections between various gear members and the transmission housing, and are operated in combinations of three to establish at least eight forward speed ratios and at least one reverse speed ratio.
    Type: Grant
    Filed: May 3, 2004
    Date of Patent: May 9, 2006
    Assignee: General Motors Corporation
    Inventors: Norman K. Bucknor, Patrick B. Usoro, Madhusudan Raghavan
  • Patent number: 7040266
    Abstract: Electro-hydraulic engine valve actuation system providing an actuator and an actuator control system. The actuator includes primary and secondary actuation chambers, defined by a piston, connected to the engine valve, and characterized by increasing and correspondingly decreasing chamber volumes, as the piston is urged away from neutral position. A fluid inlet is connected to a flow control valve. A control valve includes an actuator, and has flow states for controlling flow between two fluid inlets and a fluid outlet. The control valve includes first and second opposed, control chambers, each connected to the actuator. There is a spring in the second control chamber. The actuator of the flow control valve is controlled to a first and second state, and there is an electrically uncontrolled third flow state. There is a pair of temperature-compensated orifices which create internal feedback, with the control chambers, between the engine valve motion and the control valve position.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: May 9, 2006
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Zongxuan Sun, Rodney B. Rask
  • Patent number: 7036493
    Abstract: An air intake system for an internal combustion engine includes a manifold defining a chamber. The chamber is divided into a first chamber portion and a second chamber portion by a permeable member for fluid communication between the first chamber portion and the second chamber portion. The permeable member facilitates mixing of air and exhaust gas for more consistent EGR distribution among a plurality of cylinders.
    Type: Grant
    Filed: October 8, 2004
    Date of Patent: May 2, 2006
    Assignee: General Motors Corporation
    Inventors: Mark Steven Huebler, Yongsheng He
  • Patent number: 7036848
    Abstract: Various body configurations capitalize upon the interchangeability of vehicle bodies on a flat rolling chassis. The ability to interchange vehicle bodies and exchange modular interior components enables substantial freedom and variation in the types of automobile, trucks, heavy equipment, machinery, RV bodies, etc. that can be interchanged on a rolling chassis. Various seating arrangements may be provided as well as enhanced space utilization, and different types of interior and exterior environments, aesthetics and functionality, including sound, lighting, and other technology enhancements may be provided on a body. Methods and structures facilitate the exchange of modular body components, such as via a removable body floor.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: May 2, 2006
    Assignee: General Motors Corporation
    Inventors: Adrian B. Chernoff, Christopher E. Borroni-Bird, Tommy E. White, Mohsen D. Shabana, Robert Louis Vitale
  • Patent number: 7036483
    Abstract: Dual-lobed cams mounted on the intake camshaft of a diesel engine selectively retard timing of the intake valve closure. The purpose of retarding timing of the intake valves is to retard valve closing sufficiently to shorten the effective compression strokes of the pistons and thus reduce the effective compression ratio. This occurs when the intake valves remain open past piston bottom dead center for a desired period into the normal compression stroke phase of engine operation. This reduces compression pressures so that combustion temperatures are reduced and exhaust emissions, primarily NOx, may be thus limited under conditions of warmed-up engine operation. Dual-lobed cams may also be employed to retard timing of the intake valve opening to throttle admitted air during cold running conditions to effect higher in-cylinder charge temperatures to reduce hydrocarbon and white smoke emissions due to poor ignition and incomplete combustion.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: May 2, 2006
    Assignee: General Motors Corporation
    Inventors: Sherif H. El Tahry, Roger B. Krieger
  • Patent number: 7033298
    Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least six forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets, two input clutches, nine, ten or eleven torque transmitting mechanisms and a fixed interconnection. The invention provides a low content multi-speed dual clutch transmission mechanism wherein the two input clutches alternately connect the engine to realize odd and even number speed ratio ranges. The torque transmitting mechanisms provide connections between various gear members, the fixed interconnection, the input clutches, the output shaft, and the transmission housing, and are operated in combinations of at least three to establish at least five forward speed ratios and at least one reverse speed ratio.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: April 25, 2006
    Assignee: General Motors Corporation
    Inventors: Patrick Benedict Usoro, Chunhao J. Lee, Paul D. Stevenson
  • Patent number: 7033299
    Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least eight forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets having seven torque-transmitting mechanisms and three fixed interconnecting members. The powertrain includes an engine that is selectively connectable to at least one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The seven torque-transmitting mechanisms provide interconnections between various gear members and the transmission housing, and are operated in combinations of three to establish at least eight forward speed ratios and at least one reverse speed ratio.
    Type: Grant
    Filed: June 16, 2004
    Date of Patent: April 25, 2006
    Assignee: General Motors Corporation
    Inventors: Norman K. Bucknor, Patrick B. Usoro, Madhusudan Raghavan