Patents by Inventor David August
David August 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: 7769063Abstract: The present invention relates generally to semiconductor lasers and laser projection systems. According to one embodiment of the present invention, a method of correcting output power variations in a semiconductor laser is provided. According to the method, an output power feedback loop is utilized to generate optical intensity feedback signals representing actual output power of the laser source for discrete portions V1, Vi, . . . Vj of the image signal. Error signals E1, Ei, . . . Ej are generated representing the degree to which actual projected output power varies from a target projected output power for the discrete portions V1, Vi, . . . Vj of the image signal. These error signals E1, Ei, . . . Ej are utilized to apply corrected control signals G1?, Gi?, . . . Gj? to the gain section of the semiconductor laser for projection of compatible discrete portions V1?, Vi?, . . . Vj? of the image signal.Type: GrantFiled: October 23, 2008Date of Patent: August 3, 2010Assignee: Corning IncorporatedInventors: Jacques Gollier, Martin Hai Hu, David August Sniezek Loeber, Dragan Pikula, Daniel Ohen Ricketts
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Patent number: 7752778Abstract: A first hydraulic cylinder is associated with the boom having a first end and a second end opposite the first end. A first sensor detects a boom angle of a boom with respect to a support (or a vehicle) near the first end. An attachment is coupled to the second end of the boom. A second hydraulic cylinder is associated with the attachment. A second sensor detects an attachment angle of attachment with respect to the boom. An accelerometer detects an acceleration or deceleration of the boom. A switch is arranged to accept a command to move to a preset position from another position. A controller is capable of controlling the first hydraulic cylinder to attain a boom angle within the target boom angular range and for controlling the second cylinder to attain an attachment angle within the target attachment angular range associated with the preset position in response to the command in conformity with at least one of a desired boom motion curve and a desired attachment motion curve.Type: GrantFiled: July 17, 2007Date of Patent: July 13, 2010Assignee: Deere & CompanyInventors: Dennis Eric Schoenmaker, Mark Peter Sahlin, Jason Meredith, Jerry Anthony Samuelson, David August Johnson, Eric Richard Anderson
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Patent number: 7752779Abstract: A first hydraulic cylinder is associated with a boom. A first sensor detects a boom angle of a boom with respect to a support (or a vehicle). An attachment is coupled to one end of the boom. A second hydraulic cylinder is associated with the attachment. A second sensor detects an attachment position of attachment based on a second linear position of a second movable member of the second hydraulic cylinder. An accelerometer detects an acceleration or deceleration of the boom. A switch is arranged to accept a command to move to a preset position from another position. A controller is capable of controlling the first hydraulic cylinder to attain a target boom position and for controlling the second cylinder to attain a target attachment position associated with the preset position in response to the command in conformity with at least one of a desired boom motion curve and a desired attachment motion curve.Type: GrantFiled: July 17, 2007Date of Patent: July 13, 2010Assignee: Deere & CompanyInventors: Dennis Eric Schoenmaker, Mark Peter Sahlin, Jason Meredith, Jerry Anthony Samuelson, David August Johnson, Eric Richard Anderson
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Patent number: 7748147Abstract: A method and system for automated operation of a work vehicle comprises a boom having a first end and a second end opposite the first end. A first hydraulic cylinder is associated with the boom. A first sensor detects a boom angle of a boom with respect to a support near the first end. An attachment is coupled to the second end of the boom. A second sensor detects an attachment angle of attachment with respect to the boom. A second cylinder is associated with the attachment. A switch accepts a command to move to or enter a preset position from another position. A controller controls the first hydraulic cylinder to attain a boom angle within a target boom angular range and for controlling the second cylinder to attain an attachment angle within a target attachment angular range associated with the preset position in response to the command.Type: GrantFiled: July 17, 2007Date of Patent: July 6, 2010Assignee: Deere & CompanyInventors: Dennis Eric Schoenmaker, Mark Peter Sahlin, Jason Meredith, Jerry Anthony Samuelson, David August Johnson, Eric Richard Anderson
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Publication number: 20100103967Abstract: The present invention relates generally to semiconductor lasers and laser projection systems. According to one embodiment of the present invention, a method of correcting output power variations in a semiconductor laser is provided. According to the method, an output power feedback loop is utilized to generate optical intensity feedback signals representing actual output power of the laser source for discrete portions V1, Vi, . . . Vj of the image signal. Error signals E1, Ei, . . . Ej are generated representing the degree to which actual projected output power varies from a target projected output power for the discrete portions V1, Vi, . . . Vj of the image signal. These error signals E1, Ei, . . . Ej are utilized to apply corrected control signals G1?, Gi?, . . . Gj? to the gain section of the semiconductor laser for projection of compatible discrete portions V1?, Vi?, . . . Vj? of the image signal.Type: ApplicationFiled: October 23, 2008Publication date: April 29, 2010Inventors: Jacques Gollier, Martin Hai Hu, David August Sniezek Loeber, Dragan Pikula, Daniel Ohen Ricketts
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Publication number: 20100043387Abstract: Methods and systems for delivering fuel in a gas turbine engine are provided. The system includes a plurality of can annular combustors that includes at least a first set of combustors of the plurality of can annular combustors and at least a second set of combustors of the plurality of can annular combustors wherein each set of combustors is supplied by a separately controllable respective fuel delivery system. The method includes supplying fuel at a first fuel schedule to the first set of combustors and supplying fuel at a second fuel schedule to the second set of combustors during a first mode of operation wherein the second fuel schedule is different than the first fuel schedule, and supplying fuel at the second fuel schedule to the first and second sets of combustors during a second mode of operation.Type: ApplicationFiled: November 1, 2007Publication date: February 25, 2010Inventors: Geoffrey David Myers, David August Snider, Eric Motter, Daniel R. Tegel, James Harper, Stephen R. Watts, Joseph Citeno
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Publication number: 20090249794Abstract: Systems and methods for augmenting power output of a turbine during a transient event are provided. A cooling substance may be provided and at least a portion of the cooling substance may be directed to a compressor inlet of the turbine for a predefined time in order to augment power output of the turbine.Type: ApplicationFiled: January 22, 2009Publication date: October 8, 2009Applicant: GENERAL ELECTRIC COMPANYInventors: Kevin W. Wilkes, David August Snider, Scott Victor Hannula, Randy Scott Rosson
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Publication number: 20090018729Abstract: A first sensor detects a boom position of a boom based on a first linear position of a first movable member of a first hydraulic cylinder. A second sensor detects an attachment position of an attachment based on a second linear position of a second movable member of a second hydraulic cylinder. An accelerometer detects an acceleration or deceleration of the boom. A switch accepts a command to enter a ready position state from another position state. A controller controls the first hydraulic cylinder to attain a target boom position and for controlling the second cylinder to attain a target attachment position associated with the ready position state in response to the command in conformity with at least one of a desired boom motion curve and a desired attachment motion curve.Type: ApplicationFiled: July 26, 2007Publication date: January 15, 2009Inventors: Mark Peter Sahlin, Jason Meredith, Jerry Anthony Samuelson, David August Johnson, Eric Richard Anderson
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Publication number: 20090018728Abstract: A first hydraulic cylinder is associated with a boom. A first sensor detects a boom position based on a first linear position of a first movable member associated with the first hydraulic cylinder. An attachment is coupled to the boom. A second cylinder is associated with the attachment. A second sensor detects an attachment position based on a second linear position of a second movable member associated with the second hydraulic cylinder. A switch accepts a command to enter a ready position state from another position state. A controller controls the first hydraulic cylinder to attain a target boom position and for controlling the second cylinder to attain a target attachment position associated with the ready position state in response to the command.Type: ApplicationFiled: July 26, 2007Publication date: January 15, 2009Inventors: Mark Peter Sahlin, Jason Meredith, Jerry Anthony Samuelson, David August Johnson, Eric Richard Anderson
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Publication number: 20080289314Abstract: A fuel delivery system for a gas turbine engine includes one or more subsets of combustors, and at least two fuel manifolds including a fuel manifold coupled to each combustor subset and configured to deliver fuel to only the subset of combustors during a predetermined gas turbine engine operating mode. A gas turbine engine assembly including a fuel delivery system and a method of operating a gas turbine engine is also described herein.Type: ApplicationFiled: May 22, 2007Publication date: November 27, 2008Inventors: David August Snider, Willy Steve Ziminsky
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Publication number: 20080263908Abstract: A method and system for automated operation of a work vehicle comprises a boom having a first end and a second end opposite the first end. A first hydraulic cylinder is associated with the boom. A first sensor detects a boom angle of a boom with respect to a support near the first end. An attachment is coupled to the second end of the boom. A second sensor detects an attachment angle of attachment with respect to the boom. A second cylinder is associated with the attachment. A switch accepts a command to move to or enter a preset position from another position. A controller controls the first hydraulic cylinder to attain a boom angle within a target boom angular range and for controlling the second cylinder to attain an attachment angle within a target attachment angular range associated with the preset position in response to the command.Type: ApplicationFiled: July 17, 2007Publication date: October 30, 2008Inventors: Dennis Eric Schoenmaker, Mark Peter Sahlin, Jason Meredith, Jerry Anthony Samuelson, David August Johnson, Eric Richard Anderson
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Publication number: 20080263910Abstract: A first hydraulic cylinder is associated with the boom having a first end and a second end opposite the first end. A first sensor detects a boom angle of a boom with respect to a support (or a vehicle) near the first end. An attachment is coupled to the second end of the boom. A second hydraulic cylinder is associated with the attachment. A second sensor detects an attachment angle of attachment with respect to the boom. An accelerometer detects an acceleration or deceleration of the boom. A switch is arranged to accept a command to move to a preset position from another position. A controller is capable of controlling the first hydraulic cylinder to attain a boom angle within the target boom angular range and for controlling the second cylinder to attain an attachment angle within the target attachment angular range associated with the preset position in response to the command in conformity with at least one of a desired boom motion curve and a desired attachment motion curve.Type: ApplicationFiled: July 17, 2007Publication date: October 30, 2008Inventors: Dennis Eric Schoenmaker, Mark Peter Sahlin, Jason Meredith, Jerry Anthony Samuelson, David August Johnson, Eric Richard Anderson
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Publication number: 20080263911Abstract: A first hydraulic cylinder is associated with a boom. A first sensor detects a boom angle of a boom with respect to a support (or a vehicle). An attachment is coupled to one end of the boom. A second hydraulic cylinder is associated with the attachment. A second sensor detects an attachment position of attachment based on a second linear position of a second movable member of the second hydraulic cylinder. An accelerometer detects an acceleration or deceleration of the boom. A switch is arranged to accept a command to move to a preset position from another position. A controller is capable of controlling the first hydraulic cylinder to attain a target boom position and for controlling the second cylinder to attain a target attachment position associated with the preset position in response to the command in conformity with at least one of a desired boom motion curve and a desired attachment motion curve.Type: ApplicationFiled: July 17, 2007Publication date: October 30, 2008Inventors: Dennis Eric Shoenmaker, Mark Peter Sahlin, Jason Meredith, Jerry Anthony Samuelson, David August Johnson, Eric Richard Anderson
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Publication number: 20080263909Abstract: A method and system for automated operation of a work vehicle comprises a boom having a first end and a second end opposite the first end. A first hydraulic cylinder is associated with the boom. A first sensor detects a boom position based on a first linear position of a first movable member associated with the first hydraulic cylinder. An attachment is coupled to the second end of the boom. A second hydraulic cylinder is associated with the attachment. A second sensor detects an attachment position based on a second linear position of a second movable member associated with the second hydraulic cylinder. A switch accepts a command to move to or enter a preset position state from another position state. A controller controls the first hydraulic cylinder to attain a target boom position and for controlling the second cylinder to attain a target attachment position associated with the preset position state in response to the command.Type: ApplicationFiled: July 17, 2007Publication date: October 30, 2008Inventors: Dennis Eric Schoenmaker, Mark Peter Sahlin, Jason Meredith, Jerry Anthony Samuelson, David August Johnson, Eric Richard Anderson
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Publication number: 20080234902Abstract: A method and system for controlling a vehicle comprises a torque detector for detecting a first torque level and a second torque level applied to at least one wheel of the vehicle. The first torque level is associated with a lower boom position of a boom. An accelerometer detects an acceleration level of the boom during or after raising of the boom. A first hydraulic cylinder is capable of raising a boom from the lower boom position to raise an available torque from the first torque level. A second hydraulic cylinder is adapted to upwardly rotate or curl a bucket associated with the vehicle if the detected acceleration level of the boom is less than a minimum level during an attempt to raise the boom.Type: ApplicationFiled: July 24, 2007Publication date: September 25, 2008Inventors: David August Johnson, Mark Peter Sahlin, Eric Richard Anderson, Mark John Cherney
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Patent number: 7420997Abstract: Particular embodiments of the present invention relate generally to semiconductor lasers and laser scanning systems and, more particularly, to schemes for controlling semiconductor lasers. According to one embodiment of the present invention, a laser is configured for optical emission of encoded data. At least one parameter of the optical emission is a function of a drive current IGAIN injected into the gain section of the semiconductor laser and one or more additional drive currents I/VPHASE, I/VDBR. Mode selection in the semiconductor laser is altered by perturbing at least one of the additional drive currents I/VPHASE, I/VDBR with a perturbation signal I/VPTRB to alter mode selection in the semiconductor laser such that a plurality of different emission modes are selected in the semiconductor laser over a target emission period.Type: GrantFiled: September 13, 2007Date of Patent: September 2, 2008Assignee: Corning IncorporatedInventors: Vikram Bhatia, Jacques Gollier, Martin Hai Hu, David August Sniezek Loeber, Daniel Ohen Ricketts
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Publication number: 20080199294Abstract: A method and system for automated operation of a work vehicle comprises a boom having a first end and a second end opposite the first end. A first hydraulic cylinder is associated with the boom. A first sensor detects a boom angle of a boom with respect to a support near the first end. An attachment is coupled to the second end of the boom. A second sensor detects an attachment angle of attachment with respect to the boom. A second cylinder is associated with the attachment. A switch accepts a command to enter a ready position state from another position state. A controller controls the first hydraulic cylinder to attain a boom angle within the target boom angular range and for controlling the second cylinder to attain an attachment angle within a target attachment angular range associated with the ready position state in response to the command.Type: ApplicationFiled: July 26, 2007Publication date: August 21, 2008Inventors: Mark Peter Sahlin, Jason Meredith, Jerry Anthony Samuelson, David August Johnson, Eric Richard Anderson
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Publication number: 20080201043Abstract: A first sensor detects a boom angle of a boom with respect to a support. An attachment is coupled to the boom. A second cylinder is associated with the attachment. A second sensor detects an attachment angle of the attachment with respect to the boom. An accelerometer detects an acceleration or deceleration of the boom. A switch accepts a command to enter a ready position state from another position state. A controller controls the first hydraulic cylinder to attain a boom angle within the target boom angular range and for controlling the second cylinder to attain an attachment angle within the target attachment angular range associated with the ready position state in response to the command in conformity with at least one of a desired boom motion curve and a desired attachment motion curve.Type: ApplicationFiled: July 26, 2007Publication date: August 21, 2008Inventors: Mark Peter Sahlin, Jason Meredith, Jerry Anthony Samuelson, David August Johnson, Eric Richard Anderson
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Publication number: 20080089373Abstract: The present invention relates generally to semiconductor lasers and laser scanning systems and, more particularly, to schemes for controlling wavelength in semiconductor lasers. According to one embodiment of the present invention, a method of minimizing laser wavelength variations in a semiconductor laser is provided. According to the method, one or more of the laser drive currents is configured to comprise a drive portion and a wavelength recovery portion. The wavelength recovery portion of the drive current comprises a recovery amplitude IR that is distinct from the drive amplitude ID and a recovery duration tR that is less than the drive duration tD. The recovery amplitude IR and duration tR are sufficient to recover carrier density distribution distorted by gain compression effects prior to recovery. Additional embodiments are disclosed and claimed.Type: ApplicationFiled: October 16, 2006Publication date: April 17, 2008Applicant: Corning, IncorporatedInventors: Vikram Bhatia, Jacques Gollier, Martin Hai Hu, David August Sniezek Loeber, Daniel Ohen Ricketts, Chung-En Zah
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Publication number: 20080089370Abstract: Particular embodiments of the present invention relate generally to semiconductor lasers and laser scanning systems and, more particularly, to schemes for controlling semiconductor lasers. According to one embodiment of the present invention, a laser is configured for optical emission of encoded data. At least one parameter of the optical emission is a function of a drive current IGAIN injected into the gain section of the semiconductor laser and one or more additional drive currents I/VPHASE, I/VDBR. Mode selection in the semiconductor laser is altered by perturbing at least one of the additional drive currents I/VPHASE, I/VDBR with a perturbation signal I/VPTRB to alter mode selection in the semiconductor laser such that a plurality of different emission modes are selected in the semiconductor laser over a target emission period.Type: ApplicationFiled: September 13, 2007Publication date: April 17, 2008Inventors: Vikram Bhatia, Jacques Gollier, Martin Hai Hu, David August Sniezek Loeber, Daniel Ohen Ricketts