Patents by Inventor Gary A. McGraw

Gary A. McGraw 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).

  • Publication number: 20190351883
    Abstract: A vehicle includes a passenger capsule having a first end and a second end, a front module coupled to the first end of the passenger capsule and including a front axle assembly, a rear module coupled to the second end of the passenger capsule and including a rear axle assembly, and a braking system. The braking system includes a pump, an actuator including a rod that extends through a brake housing to apply a biasing force to a brake and inhibit movement of the vehicle, and a line coupling the pump to the actuator. Engagement of the pump provides a pressurized fluid flow through the line that overcomes the biasing force and releases the brake.
    Type: Application
    Filed: August 1, 2019
    Publication date: November 21, 2019
    Applicant: Oshkosh Defense, LLC
    Inventors: Don Verhoff, Gary Schmiedel, Chris Yakes, Rob Messina, Brian Wilkins, Kent Schulte, Daniel R. Seffernick, Joseph Holda, Michael Peotter, David McGraw, Anthony Seefeldt, Dave Pelko, Jesse Gander, Jerry Reineking, Jesse Steinke
  • Patent number: 10434995
    Abstract: A vehicle includes a passenger capsule having a first end and a second end, a front module coupled to the first end of the passenger capsule and including a front axle assembly, an engine coupled to the front module, a rear module coupled to the second end of the passenger capsule and including a rear axle assembly, and a transaxle coupled to the rear module and the engine. The transaxle includes a transfercase component and a differential component contained at least partially within a housing that defines a structural component of the rear module. The rear axle assembly includes at least one of an upper control arm, a lower control arm, a spring, and a damper that is directly coupled to the transaxle.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: October 8, 2019
    Assignee: Oshkosh Defense, LLC
    Inventors: Don Verhoff, Gary Schmiedel, Chris Yakes, Rob Messina, Brian Wilkins, Kent Schulte, Daniel R. Seffernick, Joseph Holda, Michael Peotter, David McGraw, Anthony Seefeldt, Dave Pelko, Jesse Gander, Jerry Reineking, Jesse Steinke
  • Patent number: 10274606
    Abstract: A system and related methods for determining precision navigation solutions decorrelates GPS carrier-phase ambiguities derived from multiple-source GPS information via Least-squares AMBiguity Decorrelation Adjustment (LAMBDA) algorithms, and fixes a subset of the decorrelated integer ambiguities within the LAMBDA domain. To maintain high accuracy, a partial almost fix solution is generated using the subset of the decorrelated ambiguities to be fixed in the LAMBDA domain. The subset of decorrelated ambiguities is used to compute protection levels and the probability of almost fix (PAF), or that the navigation solution corresponding to the decorrelated ambiguities is within the region of correctly-fixed or low-error almost-fixed ambiguities. The partial list of fixed ambiguities is used to generate the optimal navigation solution (floating-point, partial almost-fix, or fully fixed) while maintaining protection levels within alert limits and PAF above the desired threshold.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: April 30, 2019
    Assignee: Rockwell Collins, Inc.
    Inventors: Huan T. Phan, Gary A. McGraw, Michael J. Armatys
  • Patent number: 9883348
    Abstract: A system and related method for navigation and orientation determination in an indoor or GPS-denied environment mounts a static reference transceiver (SRT) at a known, fixed position within the environment, the fixed position referenced by a coordinate reference frame (CRF) of the SRT. The SRT communicates its position to mobile dismounted units within the environment, determining a range and orientation angle of each mobile unit relative to the SRT CRF based on response signals received from the mobile units. The SRT provides the determined SRT-CRF-referenced ranges and orientation angles to the mobile units, which may share orientation data with each other or relay the SRT-referenced location data to other mobile units not within line of sight of the SRT.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: January 30, 2018
    Assignee: Rockwell Collins, Inc.
    Inventors: Brad A. Walker, Steven E. Koenck, Gary A. McGraw
  • Patent number: 9638526
    Abstract: Systems and methods for navigation of a vehicle may carry out one or more operations including, but not limited to: obtaining coordinates of a vector connecting two points in space using carrier phase measurements from global navigation system satellites (GNSS); setting the vector as an intended path of a vehicle; storing carrier phase signals from a GNSS receiver received at a first position of the vehicle; receiving carrier phase signals from a GNSS receiver at a second position of the vehicle; and determining a position of the vehicle relative to the intended path from one or more carrier phase signals received at the second position and one or more stored carrier phase signals received at the first position.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: May 2, 2017
    Assignee: Rockwell Collins, Inc.
    Inventors: Vladislav Gavrilets, Patrick Hwang, Gary McGraw
  • Patent number: 9596073
    Abstract: Systems and related methods for simultaneous high precision synchronization and syntonization of multiple sensors or clocks utilize a precision estimator that receives clock signals and time mark signals from both sensors (a reference sensor and a clock to be measured against the reference sensor). A precision time and frequency estimator determines a time offset, frequency offset, and phase offset of the measured sensor relative to the reference sensor. Associated systems can additionally determine the propagation delay between two remote subsystems connected by a communications channel. The communications channel may be a bidirectional duplexed or multiplexed channel allowing for mutual exchange of timing information along a single non-dedicated cable between sensors. Sensors may be synchronized to within 10 ps of each other without the need for THz clocks or fiber-optic cabling.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: March 14, 2017
    Assignee: Rockwell Collins, Inc.
    Inventors: Gina M. Reyes, Jason H. Timmerman, James H. Doty, Patrick Y. Hwang, Guolin Peng, Gary A. McGraw
  • Patent number: 8880001
    Abstract: A method for providing collaborative PNT for a plurality of nodes in a distributed sensing system is disclosed. The method may include receiving carrier phase and pseudorange measurements from a first node and a second node of the plurality of nodes; providing a process model for each node, where the process model for each node is configured for modeling error characteristics associated with that node; determining an error covariance between the first node and the second node; and estimating a PNT solution for the first node and a PNT solution for the second node based on: the carrier phase and pseudorange measurements received from the first node, the carrier phase and pseudorange measurements received from the second node, the process model for the first node, the process model for the second node, and the error covariance between the first node and the second node.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: November 4, 2014
    Assignee: Rockwell Collins, Inc.
    Inventors: Patrick Y. Hwang, Gary A. McGraw
  • Patent number: 8849481
    Abstract: Systems and methods for navigation of a vehicle may carry out one or more operations including, but not limited to: obtaining coordinates of a vector connecting two points in space using carrier phase measurements from global navigation system satellites (GNSS); setting the vector as an intended path of a vehicle; storing carrier phase signals from a GNSS receiver received at a first position of the vehicle; receiving carrier phase signals from a GNSS receiver at a second position of the vehicle; and determining a position of the vehicle relative to the intended path from one or more carrier phase signals received at the second position and one or more stored carrier phase signals received at the first position.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 30, 2014
    Assignee: Rockwell Collins, Inc.
    Inventors: Vladislav Gavrilets, Patrick Hwang, Gary McGraw
  • Patent number: 8193981
    Abstract: The present invention is a geolocation system for providing coordinated sensing and precision geolocation of a target emitter. The system may include a Quint Networking Technology (QNT) subsystem which may be configured receiving, detecting and identifying a target emitter signal. The QNT subsystem may be further configured for extracting a carrier phase of the signal. The system may further include a Real Time Kinematic Global Positioning System (RTK GPS) subsystem for determining a position of the geolocation system relative to a position of a second geolocation system. Further, the system may be configured for communicating with the second geolocation system via a QNT communication data link for: determining a QNT time difference via signal carrier phase differencing for calculating a time difference between the geolocation systems and geolocating the target emitter based on both the relative position information of the geolocation systems and the calculated time difference between the geolocation systems.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: June 5, 2012
    Assignee: Rockwell Collins, Inc.
    Inventors: Patrick Y. Hwang, Gary A. McGraw, Robert J. Frank
  • Patent number: 8010287
    Abstract: The present invention is directed to accurate GPS (global positioning system)-free relative navigation between an unmanned aerial vehicle (UAV) and a tanker aircraft. The UAV transmits a signal which is received by an antenna array at the tanker aircraft. Horizontal relative position of the UAV is determined by calculating range and bearing based on time and phase differences in the received signal. Vertical relative position of the UAV is determined by comparing the altitude of the UAV with the altitude of the tanker aircraft. The tanker aircraft then transmits a navigation solution based on the relative position of the UAV which is received by the UAV. The UAV may utilize the navigation solution transmitted by the tanker aircraft as a backup to a GPS determined navigation solution, in a GPS denied scenario, or in combination with an INS (inertial navigation system) determined navigation solution.
    Type: Grant
    Filed: August 14, 2007
    Date of Patent: August 30, 2011
    Assignee: Rockwell Collins, Inc.
    Inventors: Robert J. Frank, Scott J. Zogg, Gary A. McGraw, Dana J. Jensen, Bernard A. Schnaufer
  • Publication number: 20100288908
    Abstract: The portable container includes an open upper bucket portion with a single telescoping support column or leg extending concentrically therebeneath. Four feet extend from the lower end of the column, with one foot having an extendible rod therein. A bail or handle extends from the upper portion of the bucket. The device may be used for the carriage of a number of different goods, but is particularly well suited for holding a supply of baseballs or softballs for pitching practice. The device may be deployed at the pitcher's mound, with the foot extension rod providing additional stability when the device is deployed upon the slope of the mound. The low center of gravity of the device when collapsed allows it to be carried within a motor vehicle or the like without undue risk of tipping or spilling of the contents, even when goods are being stored within the bucket portion.
    Type: Application
    Filed: May 6, 2010
    Publication date: November 18, 2010
    Inventor: Gary McGraw
  • Patent number: 7679554
    Abstract: A method and apparatus for improving differential navigation accuracy uses time transfer over a two-way communications link. The communications link transmits an overall time offset between a differential reference station and a remote user. A differential navigation position solution is modified at the remote user with the overall time offset to improve the differential navigation accuracy. A first time offset between a first communications device and a first navigation receiver at the remote user is determined. A second time offset between the first communications device at the remote user and a second communications device at the differential reference station is determined. A third time offset between the second communications device and a second navigation receiver at the differential reference station is determined. An overall time offset from the first time offset, the second time offset, and the third time offset is computed and used to improve the differential navigation accuracy.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: March 16, 2010
    Assignee: Rockwell Collins, Inc.
    Inventors: Patrick Y Hwang, Bernard A. Schnaufer, David A. Anderson, Gary A. McGraw
  • Patent number: 7570204
    Abstract: A method of generating differentially-corrected smoothed pseudorange data in a differential global positioning system (DGPS) includes generating, at a base station, non-mode specific pseudorange and carrier phase correction data. The non-mode specific pseudorange and carrier phase correction data is then provided to a remote receiver. At the remote receiver, one of a plurality of specific smoothing modes of operation is selected for use in generating differentially-corrected smoothed pseudorange and carrier phase data. The differentially-corrected smoothed pseudorange and carrier phase data is then generated by the remote receiver using the selected one of the plurality of specific smoothing modes of operation, and as a function of the non-mode specific pseudorange and carrier phase correction data received from the base station.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: August 4, 2009
    Assignee: Rockwell Collins, Inc.
    Inventor: Gary A. McGraw
  • Patent number: 7418343
    Abstract: A follower aircraft is guided to a lead aircraft using a datalink that determines range between the two. The lead aircraft has an antenna array and processing system for determining azimuth/elevation of the follower aircraft. The lead aircraft transmits a ranging message to the follower aircraft and stores a lead aircraft time of transmit (TOT) time. The ranging message is received at the follower aircraft and a follower aircraft time of reception (TOR) time is stored. A second ranging message is transmitted from the follower aircraft to the lead aircraft and a follower aircraft TOT time is stored. The second ranging message is received at the lead aircraft and a lead aircraft TOR is stored. A message is sent from the follower aircraft when follower aircraft TOT and TOR. The range and time offset is determined by the lead aircraft using follower aircraft TOT/TOR and stored lead aircraft TOT/TOR.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: August 26, 2008
    Assignee: Rockwell Collins, Inc.
    Inventors: Gary A. McGraw, Robert J. Frank, Kenneth M. Peterson, Richard S. Haendel, Scott J. F. Zogg
  • Patent number: 7405694
    Abstract: A method and apparatus for improving differential navigation accuracy uses time transfer over a two-way communications link. The communications link transmits an overall time offset between a differential reference station and a remote user. A differential navigation position solution is modified at the remote user with the overall time offset to improve the differential navigation accuracy. A first time offset between a first communications device and a first navigation receiver at the remote user is determined. A second time offset between the first communications device at the remote user and a second communications device at the differential reference station is determined. A third time offset between the second communications device and a second navigation receiver at the differential reference station is determined. An overall time offset from the first time offset, the second time offset, and the third time offset is computed and used to improve the differential navigation accuracy.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: July 29, 2008
    Assignee: Rockwell Collins, Inc.
    Inventors: Patrick Y. Hwang, Bernard A. Schnaufer, David A. Anderson, Gary A. McGraw
  • Patent number: 7219013
    Abstract: A new Fault Detection and Exclusion (FDE) approach for tightly integrated GPS/inertial sensors that combines a normalized solution separation for fault detection and a residual monitoring scheme for fault exclusion is described. The computation of the detection threshold, the horizontal protection level and the horizontal uncertainty level are also presented. This new FDE algorithm is designed to enable the tightly integrated GPS/inertial sensor to be used as a primary means of navigation sensor for civil aviation.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: May 15, 2007
    Assignee: Rockwell Collins, Inc.
    Inventors: Shih-Yih R. Young, Gary A. McGraw
  • Patent number: 6819983
    Abstract: A method of generating a synthetic pressure altitude is disclosed. The method includes providing a static air temperature to a data processing device. The method also includes providing a wind velocity, a ground velocity, and a geometric altitude to the data processing device. Further, the method includes performing a numerical integration based on the static air temperature, the wind velocity, the ground velocity, and the geometric altitude. The wind velocity and the ground velocity are used to estimate pressure gradients not included in a static air column model.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: November 16, 2004
    Assignee: Rockwell Collins
    Inventor: Gary A. McGraw
  • Patent number: 6804614
    Abstract: A method of generating a synthetic pressure altitude is disclosed. The method includes providing a static air temperature to a data processing device. The method also includes providing a geometric altitude to the data processing device. Further, the method includes performing a numerical integration based on the static air temperature and the geometric altitude.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: October 12, 2004
    Assignee: Rockwell Collins
    Inventors: Gary A. McGraw, Douglas A. Bell
  • Patent number: 6757624
    Abstract: A method of generating a synthetic pressure altitude is disclosed. The method includes providing a static air temperature to a data processing device. The method also includes receiving a geometric altitude from a geometric altitude sensing device and performing a numerical integration based on the static air temperature and the geometric altitude resulting in a synthetic pressure altitude. The method further includes receiving a pressure altitude from a pressure altitude sensing device, comparing the pressure altitude and the synthetic pressure altitude and generating an average of the pressure altitude and the synthetic pressure altitude. The method still further includes providing selectively, based on the comparing step, the average as output.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: June 29, 2004
    Assignee: Rockwell Collins
    Inventors: Patrick Y. Hwang, Gary A. McGraw
  • Patent number: 6687316
    Abstract: Methods of measuring phase angle and decoding a pseudo-random noise (PRN) code by applying High Resolution Correlators, having three or more correlators signals, where at least two signals, or multiples of two, are equally distanced advanced or delayed signals from the PRN signal with the option of one signal substantially in sync with the PRN signal. A phase tracking error is computed when measuring phase angle or adjusting the relative timing difference by adjusting the phase of the locally generated PRN signals when the error signal has a non-zero magnitude, in a manner to drive said error signal to zero when decoding the PRN code.
    Type: Grant
    Filed: January 25, 2000
    Date of Patent: February 3, 2004
    Assignee: Rockwell Collins, Inc.
    Inventor: Gary A. McGraw