Patents Assigned to Qinetiq Limited
  • Patent number: 10836427
    Abstract: Some embodiments are directed to a drive configuration for a skid steered vehicle includes first and second torque outputs coupled by a differential and in a torque connection with first and second electric motors, the differential being configured to mechanically transfer power across itself; and a mechanical power splitter having a first torque transfer feature in a torque connection with a combustion engine, a second torque transfer feature in a torque connection with a respective additional electric motor and a third torque transfer feature in a torque connection with at least one of the first and second torque outputs of the drive configuration, wherein torque output from the or each the mechanical power splitter in use is dependent on torques generated by the combustion engine and the associated additional electric motor.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: November 17, 2020
    Assignee: QINETIQ LIMITED
    Inventor: Robert John Bonner Flaxman
  • Publication number: 20200300345
    Abstract: Some embodiments are directed to a transmission including a plurality of shafts, each carrying a plurality of drive members, the drive members on each shaft arranged to operatively cooperate with those carried by at least one other shaft for transferring load between a torque input and a torque output of the transmission in use, the transmission being configured such that respective resultant gear ratios between the torque input and the torque output can be selected in use from each of a plurality of groups thereof by changing a load path between the torque input and the torque output, wherein each group of selectable resultant gear ratios has a load path feature for transferring load between a pair of the shafts which is common to the selectable resultant gear ratios within that group.
    Type: Application
    Filed: March 23, 2017
    Publication date: September 24, 2020
    Applicant: QinetiQ Limited
    Inventor: Robert William THOMPSON
  • Patent number: 10777782
    Abstract: The invention relates to devices incorporating thin, lightweight electrochemical cells and their method of manufacture, whereby a thin flexible pouch-type cell (1) comprises at least one pair of overlying electrode layers separated from one another by an intermediate electrolyte layer (13), the cell exterior being defined by first and second laminated sheets (3, 9) sealed together, wherein each laminated sheet (3, 9) has an outermost layer (3a, 9a) forming a respective external face of the cell (1) and a coextensive, innermost, conductive layer (3b, 9b) that acts as a current collector layer (3b, 9b) and which supports an electrode layer (5, 11), although the conductive layer may also itself act as the active electrode layer.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: September 15, 2020
    Assignee: QinetiQ Limited
    Inventors: Paul Barrie Adams, Fazlil Ahmode Coowar, Gary Owen Mepsted, Christopher Douglas James Spooner, Girts Vitins
  • Patent number: 10749567
    Abstract: A method for the reception of a frequency hopped direct sequence spread spectrum signal includes acquiring the signal by splitting the received signal into a plurality of processing sub-channels, each corresponding to one or more hop frequencies; and within each sub-channel: i) subtracting any sub-carrier frequency from the received signal; ii) filtering the signal from (i) using a chip-matched filter; iii) selecting a sub-set of samples from the filtered signal; iv) correlating the sampled signal from step (iii) with a known reference signal to produce at least one correlator output. The output(s) from each sub-channel are provided to an input of a corresponding one or more common discrete time Fourier transforms (DTFT), and an output therefrom having a peak above a predetermined threshold is selected for further processing in the receiver. The method is a less expensive way of tracking the signal and can demodulate appropriately modulated signals.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: August 18, 2020
    Assignee: QINETIQ LIMITED
    Inventor: Malcolm David Macleod
  • Patent number: 10704867
    Abstract: An oil and gas well shaped charge perforator capable of providing an exothermic reaction after detonation is provided, comprising a housing (2), a high explosive (3), and a reactive liner (6) where the high explosive is positioned between the reactive liner and the housing. The reactive liner (6) is produced from a reactive composition which is capable of sustaining an exothermic reaction during the formation of the cutting jet. The composition is a pressed i.e. compacted particulate composition comprising at least two metals, wherein one of the metals is present as spherical particulate, and the other metal is present as a non-spherical particulate. There may also be at least one further metal, which is not capable of an exothermic reaction with the reactive composition, present in an amount greater than 10% w/w of the liner. To aid consolidation a binder may also be added.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: July 7, 2020
    Assignee: QINETIQ LIMITED
    Inventors: Philip Duncan Church, Robert Peter Claridge, Peter John Gould, Richard Gordon Townsley
  • Patent number: 10677927
    Abstract: A method for mitigating interference in a receiver, where the received signal is transmitted in a fashion having equivalent information content in at least two distinct bands. The method compares mean power per unit bandwidth in suitably normalised sidebands and sets a rejection threshold based upon the measured levels. Bands above the threshold may be rejected from further processing. The bands may include sidebands produced by a modulation process that produces sidebands having the same informational content. The threshold may be set relative to the band having the lowest mean power per unit bandwidth or according to some other function of the bands. Also extends to a signal processor in a receiver, and a receiver. The primary focus of the application is toward the Galileo Public Regulated Service (PRS) Satellite navigation signal.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: June 9, 2020
    Assignee: QINETIQ LIMITED
    Inventor: Nigel Clement Davies
  • Patent number: 10677929
    Abstract: Some embodiments are directed to a method of determining the time of arrival of an incoming satellite signal at a receiver, including receiving an incoming signal, multiplying of the incoming signal by a first real-valued periodic modifying signal to produce a first modified output, correlating the first modified output to obtain a first correlation output, multiplying the incoming signal by a second real-valued periodic modifying signal to produce a second modified output, correlating the second modified output to produce a second correlation output and comparing the first correlation output with the second correlation output.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: June 9, 2020
    Assignee: QINETIQ LIMITED
    Inventor: Malcolm David MacLeod
  • Patent number: 10619708
    Abstract: Some embodiments are directed to a gearbox including first and second rotational members, the first rotational member having a shaft portion extending away from the gearbox, the first rotational member carrying one or more projections, the second rotational member carrying one or more complementary projections, the projections carried by the first rotational member being configured to be drivingly engaged with the complementary projections carried by the second rotational member to transmit torque in a first torque connection but not in a torque connection that is opposed to the first torque connection. The gearbox further includes a one way clutch adapted such that the first and second rotational members can be drivingly engaged to transmit torque in a second torque connection, wherein the second torque connection is opposed to the first torque connection.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: April 14, 2020
    Assignee: QINETIQ LIMITED
    Inventor: Robert William Thompson
  • Publication number: 20200070638
    Abstract: Some embodiments are directed to a drive configuration for a skid-steered vehicle that has a pair of traction motors for rotationally driving opposite outputs of the drive configuration. The traction motors are operatively connected to the outputs via respective gearing arrangements for selectively varying gear reduction between each of the traction motors and the corresponding output. The drive configuration also has a steer differential in a torque connection with the first and second outputs of the drive configuration. The drive configuration additional has a steer motor operatively connected to the steer differential for selectively varying the rotational speed of the first and second outputs in use. Also, the traction and steer motors define a volume in which the gearing arrangements and steering differential are at least partially located.
    Type: Application
    Filed: September 1, 2017
    Publication date: March 5, 2020
    Applicant: QinetiQ Limited
    Inventor: Robert John Bonner FLAXMAN
  • Patent number: 10577920
    Abstract: A sensor system for the measurement of a physical parameter, such as temperature or pressure comprises a first, fixed module (5), and a second module (20) positionable proximate to the first. The first module has a measurement coil (6) and a reference coil (7), where the measurement coil forms part of an electrical circuit that is subject to variation by the physical parameter, and the reference coil forms part of a circuit not subject to the physical parameter being measured. The second module has a pair of reading coils (22, 23), each arranged to couple to respective measurement and reference coils, where the reading coils are connectable to signal generation and measurement equipment, and the system is arranged to measure electrical characteristics of the measurement and reference coils via the coupling. It has particular utility in harsh environments such as in wells, where the first module may be fixed, and the second module may be lowered adjacent the first.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: March 3, 2020
    Assignee: QINETIQ LIMITED
    Inventors: Rajinder Singh, Michael William Hopkins
  • Patent number: 10533401
    Abstract: Some embodiments are directed to a shaped charge liner including an apex end and a base end and defining a main liner axis that passes through the apex and base ends, the liner being rotationally symmetric about the main liner axis wherein the liner has discrete rotational symmetry about the main liner axis.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: January 14, 2020
    Assignee: QINETIQ LIMITED
    Inventors: Michael John Hinton, Philip Duncan Church, Richard Gordon Townsley, Peter John Gould
  • Patent number: 10526875
    Abstract: A carrier for at least one shaped charge, the carrier being disposable in use within an oil, gas, water or steam well bore. The carrier comprises a housing at least partially formed from a composite material which is non-frangible in normal use. The composite material component of the housing is arranged substantially to contain debris created within the carrier as a result of firing of the at least one shaped charge. The housing may be entirely of composite material or may comprise in inner metallic housing and an outer overwrap of composite material.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: January 7, 2020
    Assignee: QINETIQ LIMITED
    Inventors: Russell Vaughan Meddes, Michael John Hinton
  • Patent number: 10502821
    Abstract: Some embodiments are directed to a radar imaging system that includes a radar transmitter configured to transmit radar at a target; an aperture including an array of physically independent airborne carriers, each of the carriers configured to receive radar echoes from the target; and a base station, which may be located at ground level, in communication with each of the airborne carriers to receive the radar echoes and determine an image of the target from the received radar echoes.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: December 10, 2019
    Assignee: QINETIQ LIMITED
    Inventors: William Nicholas Dawber, Gary Steven Pearson
  • Patent number: 10493844
    Abstract: A gearing assembly includes a rotary input member, a rotary output member, and a gearing arrangement between the input member and the output member selectively able to effect a driving engagement between the input member and the output member through at least a first torque connection having a first gear ratio. A second torque connection has a second gear ratio and a third torque connection having a third gear ratio. The gearing arrangement includes a first engagement member operable selectively to effect the first torque connection in a 1:1 ratio, a first planetary gear stage, and a second planetary gear stage. A second engagement member is operable selectively to effect the second torque connection, and a third engagement member operable selectively to effect the third torque connection, respectively, through one or more of the planetary gear stages.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: December 3, 2019
    Assignee: QINETIQ LIMITED
    Inventor: Robert William Thompson
  • Patent number: 10443573
    Abstract: A wind turbine comprising a support structure and one or more turbine blades is disclosed, that incorporates means for reducing the radar cross section (RCS), wherein the support structure is notionally divided into an upper section in the shadow of the blade sweep area, and a lower section beneath the upper section, wherein the upper section is adapted to have the means for reducing the RCS, and the lower section does not have the said adaptation. The invention makes use of the realization that the blade masking the tower as it rotates (or the blade being masked by the tower if facing away from a radar), contributes significantly to interference to radar systems, and so localized application of e.g. RAM can give good RCS reduction at a lower cost than treating the whole structure.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: October 15, 2019
    Assignee: QINETIQ LIMITED
    Inventors: Greg Peter Wade Fixter, Christopher Douglas James Spooner, Christopher James Perry, Vincent Savage
  • Publication number: 20190310347
    Abstract: A drone detection radar can include a plurality of antenna systems, each antenna system being arranged to transmit a signal into an associated sector, and to receive signals reflected from targets in the sector, the sectors collectively forming a monitored volume, and wherein a sub-set of the antenna systems are active at any one time, with the active sub-set of antenna systems being arranged to monitor their respective volumes for a duration sufficient to measure Doppler signals associated with slow moving drones, with the radar being arranged to switch to a different sub-set of antenna systems after each duration, such that the whole volume is monitored within a predetermined period. Combining a staring array from an antenna system with a plurality of switched antenna system allows drones to be both detected and tracked, with appropriate selection of the predetermined period.
    Type: Application
    Filed: June 1, 2017
    Publication date: October 10, 2019
    Applicant: QinetiQ Limited
    Inventor: Stephen Anthony HARMAN
  • Patent number: 10436937
    Abstract: The present invention discloses a detection device for discriminating between different materials, and a method for doing so. The device comprises an optical system having at least one optical focussing element and a receiving element. The receiving element is sensitive to electromagnetic radiation, typically in the millimeter wave band, and the optical system being arranged to focus incident energy from a scene onto the receiving element. The optical system comprises a prism element having a first surface and a second surface, the first surface being opposite the second surface. At least a portion of the first surface is positioned at an angle ? to the second surface. The angle ? varies between a minimum at a first position on the first surface and a maximum at a second position on the first surface.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: October 8, 2019
    Assignee: QINETIQ LIMITED
    Inventors: Rupert Nicholas Anderton, Richard George Humphreys
  • Patent number: 10428941
    Abstract: A drive member selection mechanism is described, including at least one drive member and at least two selector members, wherein the drive member includes a first and second face, and further includes, on each face, at least one projection, and the selector members include, on at least one face thereof, at least one complementary projection arranged to selectively engage with a projection of a drive member, the arrangement being such that the projection(s) of a selector member and the projection(s) of the first face of a drive member may be drivingly engaged in a first torque connection and the projection(s) of a selector member and the projection(s) of the second face of a drive member may be drivingly engaged in a second torque connection, wherein the second torque connection is opposed to the first torque connection.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: October 1, 2019
    Assignee: QINETIQ LIMITED
    Inventor: Robert William Thompson
  • Publication number: 20190280770
    Abstract: Methods and apparatus for determining a data signal. In an example, a method includes acquiring at least one image of a field of view at a first frame rate and identifying a sub-region of the field of view, wherein the sub-region contains an optical data signal. A plurality of images of the sub-region of the field of view may be acquired at a second frame rate, wherein the second frame rate is higher than the first frame rate, and a data signal encoded in the optical data signal may be determined from the plurality of images of the sub-region of the field of view.
    Type: Application
    Filed: October 19, 2017
    Publication date: September 12, 2019
    Applicant: QINETIQ LIMITED
    Inventor: Robert Francis Sean HICKS
  • Patent number: D863242
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: October 15, 2019
    Assignee: QINETIQ LIMITED
    Inventors: Andrew Gordon, Alex Waldron, Michael Unwin