Patents by Inventor John William Arkwright
John William Arkwright 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: 10472947Abstract: Apparatus for measuring deformation of an elongate body defining an axis, the apparatus including: an optical fibre arranged relative to the body, the optical fibre including a first strain sensitive optical fibre portion coupled to the body and at least partially aligned at a first angle relative to the axis, and a second strain sensitive optical fibre portion coupled to the body and at least partially aligned at a second angle relative to the axis, the second angle being opposite to the first angle; a radiation source connected to an end of the optical fibre, the radiation source being for supplying electromagnetic radiation to the optical fibre; a sensor connected to an end of the optical fibre, the sensor being for sensing electromagnetic radiation received from the first and second optical fibre portions; and a processing device for determining the deformation of the body using the sensed electromagnetic radiation, the deformation including any axial or torsional deformation.Type: GrantFiled: June 29, 2015Date of Patent: November 12, 2019Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Karsten Hoehn, John William Arkwright
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Publication number: 20180171778Abstract: Apparatus for measuring deformation of an elongate body defining an axis, the apparatus including: an optical fibre arranged relative to the body, the optical fibre including a first strain sensitive optical fibre portion coupled to the body and at least partially aligned at a first angle relative to the axis, and a second strain sensitive optical fibre portion coupled to the body and at least partially aligned at a second angle relative to the axis, the second angle being opposite to the first angle; a radiation source connected to an end of the optical fibre, the radiation source being for supplying electromagnetic radiation to the optical fibre; a sensor connected to an end of the optical fibre, the sensor being for sensing electromagnetic radiation received from the first and second optical fibre portions; and a processing device for determining the deformation of the body using the sensed electromagnetic radiation, the deformation including any axial or torsional deformation.Type: ApplicationFiled: June 29, 2015Publication date: June 21, 2018Inventors: Karsten HOEHN, John William ARKWRIGHT
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Patent number: 9459164Abstract: The present disclosure provides an optical sensing apparatus for measuring a change in a first property. The optical sensing apparatus comprises first and second optical fibre portions and a sensing region for exposing both the first and second optical fibre portions to a change in an applied force. The force is, or is related to, the first property and has a component that is transversal to the optical fibre portions. The apparatus further comprises a holder for holding the first and second optical fibre portions in the sensing region. The first and second optical fibre portions are arranged relative to each other such that the change in the force results in a first change of an optical property of the first optical fibre portion and in a second change of the optical property of the second optical fibre portion and wherein the first change differs from the second change.Type: GrantFiled: November 14, 2012Date of Patent: October 4, 2016Assignee: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATIONInventors: John William Arkwright, Simon Adam Maunder, Hsiao-Chuan Wang
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Publication number: 20140326078Abstract: The present disclosure provides an optical sensing apparatus for measuring a change in a first property. The optical sensing apparatus comprises first and second optical fibre portions and a sensing region for exposing both the first and second optical fibre portions to a change in an applied force. The force is, or is related to, the first property and has a component that is transversal to the optical fibre portions. The apparatus further comprises a holder for holding the first and second optical fibre portions in the sensing region. The first and second optical fibre portions are arranged relative to each other such that the change in the force results in a first change of an optical property of the first optical fibre portion and in a second change of the optical property of the second optical fibre portion and wherein the first change differs from the second change.Type: ApplicationFiled: November 14, 2012Publication date: November 6, 2014Applicant: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANIZATIONInventors: John William Arkwright, Adam Simon Maunder, Hsiao-Chuan Wang
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Publication number: 20140257139Abstract: The present disclosure provides an optical sensing device that comprises a plurality of optical light guide portions. Each optical light guide portion has a sensing region for sensing a property. The device further comprises a support for supporting the optical light guide portions and for positioning the optical light guide portions in a manner such that at least two sensing regions have a different radial positions around a portion of the support such that the optical device is arranged to sense a property at the different radial positions.Type: ApplicationFiled: November 16, 2012Publication date: September 11, 2014Applicant: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATIONInventors: John William Arkwright, Ian Underhill, Neil Geoffrey Blenman
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Patent number: 8724935Abstract: The present disclosure provides an optical device comprising a first optical fiber portion having a first region and further regions between which the first region is positioned. The optical device also comprises a second optical fiber portion having a second region and further regions between which the second region is positioned. Further, the optical fiber comprises at least one member to which the first and second optical fiber portions are attached at the first and second regions. The first and second regions are positioned at opposite sides of an area defined between the first and second regions and spaced apart from each other by a first distance and wherein adjacent further regions are spaced apart by a second distance that is smaller than the first distance.Type: GrantFiled: March 11, 2009Date of Patent: May 13, 2014Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: John William Arkwright, Ian Underhill, Neil Blenman
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Patent number: 8503834Abstract: The present invention provides an apparatus for distributed pressure sensing. The apparatus comprises a series of Bragg gratings, a light guide incorporating the series of Bragg gratings and a plurality of moveable wall portions. The moveable wall portions are coupled to respective Bragg gratings so that the movement of one of the moveable wall portion causes a force on the respective Bragg grating resulting in a change in strain of the respective Bragg grating. The apparatus also comprises at least one rigid member that is attached at attachment regions between which a sensing region of at least one Bragg grating is defined. The rigid member is arranged so that a strain in the sensing region is not directly influenced by a change in strain of the light guide outside the sensing region.Type: GrantFiled: March 9, 2006Date of Patent: August 6, 2013Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: John William Arkwright, Simon Nicholas Doe, Vinay Kumar Tyagi, Edward William Preston
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Publication number: 20110274387Abstract: The present disclosure provides an apparatus for sensing a motion. The apparatus comprises an optical fibre portion comprising a Bragg grating and an element for reducing an impact of an external force that is transversal to the Bragg grating. Further, the apparatus comprises a contact region arranged so that movement of a further region, that is in direct or indirect contact with the contact region and moves in a direction along a portion of the apparatus, causes movement of the optical fibre portion at the contact region. The apparatus also comprises a holder arranged for reducing movement of the optical fibre portion at a holding region when the optical fibre portion is moved at the contact surface. The apparatus is arranged so that movement of the contact region relative to the holding region causes a change in strain of the Bragg grating.Type: ApplicationFiled: July 18, 2011Publication date: November 10, 2011Applicants: EngineeringInventor: John William ARKWRIGHT
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Patent number: 8031988Abstract: The present invention provides an apparatus for pressure sensing. The apparatus comprises a light guide, a Bragg grating incorporated into the light guide and a moveable wall portion. The moveable wall portion has opposite first and second sides and is being positioned so that a change in pressure at one of the sides relative to a pressure at the other side will move the moveable wall portion. The moveable wall portion is coupled to the Bragg grating so that the movement of the moveable wall portion causes a force on a side of the Bragg grating. The force has a component that is transversal to the Bragg grating and effects a change in strain of the Bragg grating and thereby a change in an optical period of the Bragg grating.Type: GrantFiled: March 9, 2006Date of Patent: October 4, 2011Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: John William Arkwright, Simon Nicholas Doe, Vinay Kumar Tyagi, Edward William Preston
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Patent number: 8005325Abstract: The present disclosure provides an apparatus for sensing a motion. The apparatus comprises an optical fibre portion comprising a Bragg grating and an element for reducing an impact of an external force that is transversal to the Bragg grating. Further, the apparatus comprises a contact region arranged so that movement of a further region, that is in direct or indirect contact with the contact region and moves in a direction along a portion of the apparatus, causes movement of the optical fibre portion at the contact region. The apparatus also comprises a holder arranged for reducing movement of the optical fibre portion at a holding region when the optical fibre portion is moved at the contact surface. The apparatus is arranged so that movement of the contact region relative to the holding region causes a change in strain of the Bragg grating.Type: GrantFiled: December 1, 2008Date of Patent: August 23, 2011Assignee: Commonwealth Scientific and Industrial Research OrganisationInventor: John William Arkwright
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Publication number: 20110116743Abstract: The present disclosure provides an optical device comprising a first optical fibre portion having a first region and further regions between which the first region is positioned. The optical device also comprises a second optical fibre portion having a second region and further regions between which the second region is positioned. Further, the optical fibre comprises at least one member to which the first and second optical fibre portions are attached at the first and second regions. The first and second regions are positioned at opposite sides of an area defined between the first and second regions and spaced apart from each other by a first distance and wherein adjacent further regions are spaced apart by a second distance that is smaller than the first distance.Type: ApplicationFiled: March 11, 2009Publication date: May 19, 2011Inventors: John William Arkwright, Ian Underhill, Neil Blenman
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Publication number: 20100296772Abstract: The present disclosure provides an apparatus for sensing a motion. The apparatus comprises an optical fibre portion comprising a Bragg grating and an element for reducing an impact of an external force that is transversal to the Bragg grating. Further, the apparatus comprises a contact region arranged so that movement of a further region, that is in direct or indirect contact with the contact region and moves in a direction along a portion of the apparatus, causes movement of the optical fibre portion at the contact region. The apparatus also comprises a holder arranged for reducing movement of the optical fibre portion at a holding region when the optical fibre portion is moved at the contact surface. The apparatus is arranged so that movement of the contact region relative to the holding region causes a change in strain of the Bragg grating.Type: ApplicationFiled: December 1, 2008Publication date: November 25, 2010Applicant: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATIONInventor: John William Arkwright
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Publication number: 20100069785Abstract: The present invention provides an apparatus for pressure sensing. The apparatus comprises a series of Bragg gratings and a light guide incorporating the series of Bragg gratings. The apparatus also comprises a plurality of moveable wall portions having opposite first and second sides. Each moveable wall portion is positioned so that a change in pressure at one of the sides relative to a pressure at the other side will move the moveable wall portion that is coupled to respective Bragg gratings so that the movement of one of the moveable wall portion causes a force on the respective Bragg grating resulting in a change in strain of the respective Bragg grating. An internal space at each Bragg grating is in fluidal communication with an internal space at an adjacent Bragg grating whereby pressure differences between adjacent internal spaces are reduced.Type: ApplicationFiled: July 23, 2007Publication date: March 18, 2010Applicant: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORInventors: John William Arkwright, Simon Nicholas Doe, Brian Laurence Jarvis, Andreas Hartmann
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Publication number: 20080281209Abstract: The present invention provides an optical device which comprises a light guide incorporating a Bragg grating. The apparatus also comprises a moveable wall portion which is coupled to the Bragg grating so that a movement of the wall portion causes a force that effects a change in strain of the Bragg grating and thereby effects a change in an optical period of the Bragg grating. A temperature related change in the optical period of the Bragg grating is reduced by a temperature related change in the force on the Bragg grating by the moveable wall portion.Type: ApplicationFiled: March 9, 2006Publication date: November 13, 2008Inventors: John William Arkwright, Simon Nicholas Doe, Vinay Kumar Tyagi, Edward William Preston
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Publication number: 20080192230Abstract: The present invention provides an apparatus for pressure sensing. The apparatus comprises a light guide, a Bragg grating incorporated into the light guide and a moveable wall portion. The moveable wall portion has opposite first and second sides and is being positioned so that a change in pressure at one of the sides relative to a pressure at the other side will move the moveable wall portion. The moveable wall portion is coupled to the Bragg grating so that the movement of the moveable wall portion causes a force on a side of the Bragg grating. The force has a component that is transversal to the Bragg grating and effects a change in strain of the Bragg grating and thereby a change in an optical period of the Bragg grating.Type: ApplicationFiled: March 9, 2006Publication date: August 14, 2008Inventors: John William Arkwright, Simon Nicholas Doe, Vinay Kumar Tyagi, Edward William Preston
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Publication number: 20080188776Abstract: The present invention provides an apparatus for distributed pressure sensing. The apparatus comprises a series of Bragg gratings, a light guide incorporating the series of Bragg gratings and a plurality of a moveable wall portion. The moveable wall portions have opposite first and second sides and each moveable wall portion is positioned so that a change in pressure at one of the sides relative to a pressure at the other side will move the moveable wall portion. The moveable wall portions are coupled to respective Bragg gratings so that the movement of one of the moveable wall portion causes a force on the respective Bragg grating resulting in a change in strain of the respective Bragg grating. The apparatus also comprises at least one rigid member that is attached at attachment regions between which a sensing region of at least one Bragg grating is defined.Type: ApplicationFiled: March 9, 2006Publication date: August 7, 2008Inventors: John William Arkwright, Simon Nicholas Doe, Vinay Kumar Tyagi, Edward Willliam Preston
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Patent number: 6415077Abstract: A non-reciprocal optical device mapping a series of optical input/output signal waveguides to a corresponding series of optical input/output signal waveguides, the device comprising: a series of spaced apart input/output waveguides; a reflective imaging system for reflecting and focussing light emitted from the input/output waveguides; a plurality of crystal elements between the input/output waveguides and the reflective imaging means; at least one non-reciprocal polarization rotation element; wherein light emitted from a first input/output waveguide is transmitted to a second input/output waveguide in a polarization independent manner and light emitted from the second input/output waveguide is transmitted away from the first input/output waveguide.Type: GrantFiled: July 5, 2000Date of Patent: July 2, 2002Assignee: Nortel Networks (Photonics) Pty. Ltd.Inventors: Steven James Frisken, John William Arkwright, Peter Collin Hill
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Patent number: 6263131Abstract: A non-reciprocal optical device mapping a series of optical input/output signal waveguides to a corresponding series of optical input/output signal waveguides, the device comprising: a series of spaced apart input/output waveguides; a reflective imaging system for reflecting and focussing light emitted from the input/output waveguides; a plurality of crystal elements between the input/output waveguides and the reflective imaging means; at least one non-reciprocal polarization rotation element; wherein light emitted from a first input/output waveguide is transmitted to a second input/output waveguide in a polarization independent manner and light emitted from the second input/output waveguide is transmitted away from the first input/output waveguide.Type: GrantFiled: July 2, 1999Date of Patent: July 17, 2001Assignee: Nortel Networks (Photonics) Pty LTD.Inventors: Steven James Frisken, John William Arkwright, Peter Collin Hill