Patents by Inventor David Claxton

David Claxton 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: 8744741
    Abstract: A Light Detection and Ranging (LIDAR) apparatus and method are disclosed having a rotatable light source enabled to emit a light ray, the light ray being emitted at a plurality of angular intervals; a reflection device, which can be parabolic in shape, and an analysis device for calculating a position at which one or more features are present based on the angle that the light ray was emitted and the time delay associated with the received reflected light, from a feature, wherein the analysis device takes into account the reflection of the light ray from the reflection device. In this manner, light rays may be reflected from heading in one direction to improve the resolution of the LIDAR in a second direction. Furthermore, where a parabolic reflector is used, positions of features can be calculated directly in a Cartesian coordinate system. Autonomous vehicles can use a LIDAR such as described herein to improve forward looking resolution in collision avoidance systems or terrain selection systems.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: June 3, 2014
    Assignee: BAE Systems PLC
    Inventors: Richard Arthur Brimble, Christopher David Claxton
  • Patent number: 8706676
    Abstract: The method includes receiving a plurality of target observations from a respective plurality of sensors and using the target observations to compute target state estimates. Each of the target state estimates is assessed to check if it suffers from one of a set of modelled possible fault types. The target state estimates are adjusted to compensate for any modelled fault type when it is assessed to be suffering from that fault type. A reliability value is computed for each of the target state estimates and the target state estimates are fused together based on the computed reliability values to produce a fused target state estimate.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: April 22, 2014
    Assignee: BAE Systems PLC
    Inventors: Christopher David Claxton, David Nicholson, Steven Reece, Stephen John Roberts
  • Patent number: 8610775
    Abstract: A method of estimating states of a plurality of targets tracked by a plurality of sensors. The method includes obtaining a plurality of data sets based on measurements taken by a plurality of sensors, each data set including information on states of a plurality of targets. The method then generates a plurality of target correlation data sets describing correlation of the targets within a first data set and at least one other data set. A Generalised Covariance Union (GCU) technique is used to merge at least some of the plurality of target correlation data sets to generate an estimate of the states of the plurality of targets.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: December 17, 2013
    Assignee: BAE Systems PLC
    Inventors: Christopher David Claxton, David Nicholson, Steven Reece, Stephen John Roberts
  • Publication number: 20120089554
    Abstract: The method includes receiving a plurality of target observations from a respective plurality of sensors and using the target observations to compute target state estimates. Each of the target state estimates is assessed to check if it suffers from one of a set of modelled possible fault types. The target state estimates are adjusted to compensate for any modelled fault type when it is assessed to be suffering from that fault type. A reliability value is computed for each of the target state estimates and the target state estimates are fused together based on the computed reliability values to produce a fused target state estimate.
    Type: Application
    Filed: June 22, 2010
    Publication date: April 12, 2012
    Applicant: BAE SYSTEMS plc
    Inventors: Christopher David Claxton, David Nicholson, Steven Reece, Stephen John Roberts
  • Patent number: 8070463
    Abstract: This invention relates generally to a pneumatic, hydraulic or other media driver, rotating-reciprocating cylinder apparatus to be mounted on the proximal end of CNC lathe spindles, vertical or inverted machining centers, hydraulic machining work cells or rotary transfer machines to actuate work holding chucks, work holding fixtures, clamping apparatus or work supports on the distal end of said spindles. More specifically, this invention relates to an actuating system with the capability of boosting the input hydraulic pressure to the holding device by a pre-set multiple up to 5000 psi where the boost pump is integral to and rotates with the clamp cylinder assembly.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: December 6, 2011
    Inventors: Gregory A. Stephens, Alan Claxton, David Claxton, Thomas Thompson
  • Publication number: 20110169951
    Abstract: A method of estimating states of a plurality of targets tracked by a plurality of sensors. The method includes obtaining a plurality of data sets based on measurements taken by a plurality of sensors, each data set including information on states of a plurality of targets. The method then generates a plurality of target correlation data sets describing correlation of the targets within a first data set and at least one other data set. A Generalised Covariance Union (GCU) technique is used to merge at least some of the plurality of target correlation data sets to generate an estimate of the states of the plurality of targets.
    Type: Application
    Filed: July 30, 2009
    Publication date: July 14, 2011
    Applicant: BAE SYSTEMS PLC
    Inventors: Christopher David Claxton, David Nicholson, Steven Reece, Stephen John Roberts
  • Publication number: 20110040482
    Abstract: A Light Detection and Ranging (LIDAR) apparatus and method are disclosed having a rotatable light source enabled to emit a light ray, the light ray being emitted at a plurality of angular intervals; a reflection device, which can be parabolic in shape, and an analysis device for calculating a position at which one or more features are present based on the angle that the light ray was emitted and the time delay associated with the received reflected light, from a feature, wherein the analysis device takes into account the reflection of the light ray from the reflection device. In this manner, light rays may be reflected from heading in one direction to improve the resolution of the LIDAR in a second direction. Furthermore, where a parabolic reflector is used, positions of features can be calculated directly in a Cartesian coordinate system. Autonomous vehicles can use a LIDAR such as described herein to improve forward looking resolution in collision avoidance systems or terrain selection systems.
    Type: Application
    Filed: April 17, 2009
    Publication date: February 17, 2011
    Applicant: BAE SYSTEMS plc
    Inventors: Richard Arthur Brimble, Christopher David Claxton
  • Publication number: 20090304533
    Abstract: This invention relates generally to a pneumatic, hydraulic or other media driver, rotating-reciprocating cylinder apparatus to be mounted on the proximal end of CNC lathe spindles, vertical or inverted machining centers, hydraulic machining work cells or rotary transfer machines to actuate work holding chucks, work holding fixtures, clamping apparatus or work supports on the distal end of said spindles. More specifically, this invention relates to an actuating system with the capability of boosting the input hydraulic pressure to the holding device by a pre-set multiple up to 5000 psi where the boost pump is integral to and rotates with the clamp cylinder assembly.
    Type: Application
    Filed: August 14, 2009
    Publication date: December 10, 2009
    Applicant: Stephens Dynamics, Inc.
    Inventors: Gregory A. Stephens, Alan Claxton, David Claxton, Thomas Thompson
  • Publication number: 20080107548
    Abstract: This invention relates generally to a pneumatic and hydraulic rotating, reciprocating cylinder apparatus to be mounted on the proximal end of CNC lathe spindles, vertical or inverted machining centers, hydraulic machining work cells or rotary transfer machines to actuate work holding chucks, work holding fixtures, clamping apparatus or work supports on the distal end of said spindles. More specifically, this invention relates to an actuating system with the capability of boosting the input hydraulic pressure to the holding device by a pre-set multiple up to 5000 psi.
    Type: Application
    Filed: November 2, 2006
    Publication date: May 8, 2008
    Applicant: Stephens Dynamics, Inc.
    Inventors: Gregory A. Stephens, Alan Claxton, David Claxton, Thomas Thompson
  • Patent number: 7080592
    Abstract: In accordance with the present invention a pneumatic or hydraulic rotating cylinder capable of very high speeds is embodied. It is constructed of light weight materials, minimizing the mass but is given the ability to run at high speed in spite of vibrating environments, supply line condensation, contaminants and various attitudinal mounting by the anti-seizure insert bearing inserted into the distributor and sleeving the rotating shaft.
    Type: Grant
    Filed: January 6, 2005
    Date of Patent: July 25, 2006
    Assignee: Stephens Dynamics, Inc.
    Inventors: Phillip D. Clark, Alan Claxton, David Claxton, Thomas Thompson, Gregory A. Stephens
  • Publication number: 20050150373
    Abstract: In accordance with the present invention a pneumatic or hydraulic rotating cylinder capable of very high speeds is embodied. It is constructed of light weight materials, minimizing the mass but is given the ability to run at high speed in spite of vibrating environments, supply line condensation, contaminants and various attitudinal mounting by the anti-seizure insert bearing inserted into the distributor and sleeving the rotating shaft.
    Type: Application
    Filed: January 6, 2005
    Publication date: July 14, 2005
    Applicant: Stephens Dynamics, Inc.
    Inventors: Phillip Clark, Alan Claxton, David Claxton, Thomas Thompson, Gregory Stephens
  • Publication number: 20050008664
    Abstract: The present invention concerns the use of methods and compositions to provide an improved lipid:emodin formulation for the treatment of leukemias expressing bcr-abl and other cancer with elevated tyrosine kinase activity.
    Type: Application
    Filed: December 8, 2003
    Publication date: January 13, 2005
    Inventors: David Claxton, Robert Newman, Gabriel Lopez-Berestein
  • Patent number: 6581509
    Abstract: A rotary cylinder assembly for a machine tool is provided that includes a lock check system that locks the work piece to the machine tool chuck and prevents extension and retraction of the work piece in the event of loss of hydraulic or pneumatic pressure. The rotary cylinder assembly includes a shaft end cover coupled between a fluid shaft housing and a cylinder body. The shaft end cover houses the lock check system and includes a number of flow paths that provide for extension and retraction of a piston rod connector housed in the cylinder body in response to fluid pressure supplied from the fluid shaft housing. The shaft end cover and lock check system are configured to allow small diameter cylinder bodies to be coupled thereto while providing the safety and functional features associated with the lock check system.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: June 24, 2003
    Assignee: Stephens Dynamics, Inc.
    Inventors: Philip Dan Clark, Alan Claxton, David Claxton, Gregory A. Stephens
  • Patent number: 5869611
    Abstract: The breakpoints of the pericentric inversion of chromosome 16 have been cloned. Two genes, one at each breakpoint, have also been identified, as well as several forms of the inversion 16 fusion gene. Diagnostic applications for chromosome 16 abnormalities and, particularly acute myeloid leukemia are also within the scope of the present invention.
    Type: Grant
    Filed: November 1, 1996
    Date of Patent: February 9, 1999
    Assignees: The Regents Of The University Of Michigan and The Board of Regents, University of Texas System
    Inventors: Pu Liu, Francis S. Collins, Michael J. Siciliano, David Claxton
  • Patent number: 5837457
    Abstract: The breakpoints of the pericentric inversion of chromosome 16 have been cloned. Two genes, one at each breakpoint, have also been identified, as well as several forms of the inversion 16 fusion gene. Diagnostic applications for chromosome 16 abnormalities and, particularly acute myeloid leukemia are also within the scope of the present invention.
    Type: Grant
    Filed: September 25, 1995
    Date of Patent: November 17, 1998
    Assignees: The Regents of the University of Michgan, The Board of Regents University of Texas System
    Inventors: Pu Liu, Francis S. Collins, Michael J. Siciliano, David Claxton