Patents Assigned to Renishaw
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Patent number: 11160954Abstract: A method for delivering fluid to the brain of a subject using an intraparenchymal catheter, the method comprising the step of inserting the catheter 5 into the brain using a posterior to anterior approach and methods of treating neurodegenerative disorders using this delivery method, as well as methods for delivering fluid to an elongate structure of the brain using an intraparenchymal catheter, the method comprising the step of inserting a catheter into the brain along an insertion axis that is substantially aligned with a long axis of the elongate structure.Type: GrantFiled: June 27, 2019Date of Patent: November 2, 2021Assignee: RENISHAW NEURO SOLUTIONS LTDInventor: Steven Streatfield Gill
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Patent number: 11154377Abstract: Neurosurgical apparatus has a guidance device having a guide tube and a neurosurgical instrument for insertion into the guide tube. The inner surface of the guide tube is arranged, for example profiled, to at least partially engage the outer surface of the neurosurgical instrument when inserted therein. The guide tube thus guides the neurosurgical instrument along a predefined path through the guide tube. At least one of the guidance device and the outer surface of the neurosurgical instrument are configured to provide a fluid return path for carrying any fluid displaced from within the guide tube during insertion of the neurosurgical instrument into the guide tube. A seal may also be provided for sealing the fluid return path.Type: GrantFiled: March 19, 2015Date of Patent: October 26, 2021Assignee: RENISHAW PLCInventors: Steven Streatfield Gill, Paul Fielder, Maxwell Roy Woolley
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Publication number: 20210316369Abstract: A powder bed fusion apparatus in which an object is built in a layer-by-layer manner. The apparatus has a build sleeve and a build platform for supporting a powder bed, the build platform lowerable in the build sleeve. A processing plate is coupled to an upper end of the build sleeve. The apparatus further has a doser for dosing powder and a recoater for spreading the dosed powder across the processing plate to the powder bed. A heater is provided for heating the powder bed. An active cooling device having a cooling element and/or cooling channel is to form, in use, an active thermal barrier to conduction of heat from the build sleeve through the processing plate.Type: ApplicationFiled: July 31, 2019Publication date: October 14, 2021Applicant: RENISHAW PLCInventor: Nneji KEMAKOLAM
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Publication number: 20210308769Abstract: A method of filtering gas in a powder bed fusion apparatus, wherein an object is built layer-by-layer by selective solidification of a powder bed, and a powder bed fusion apparatus for executing the method. The apparatus includes a build chamber housing the powder bed, a gas circuit for recirculating the gas, including passing the gas over the powder bed within the build chamber, multiple filter assemblies in the gas circuit for filtering process emissions from the recirculated gas and a valve system regulating gas flow to each filter assembly. The method may include controlling the valve system to divide the gas flow between the filter assemblies. The method includes controlling the valve system such that a first one of the filter assemblies is connected with at least one second one of the filter assemblies such that the gas passes through the filter elements of both filter assemblies.Type: ApplicationFiled: September 10, 2019Publication date: October 7, 2021Applicant: RENISHAW PLCInventors: Ceri BROWN, Daniel John CURTIS
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Publication number: 20210299755Abstract: A selective solidification apparatus includes a build chamber, a build platform lowerable in the build chamber, a wiper for spreading powder material across the build platform to form successive powder layers of a powder bed, an energy beam unit for generating an energy beam for consolidating the powder material, a scanner for directing and focussing the energy beam onto each powder layer and a processor for controlling the scanner. The processor is arranged to control the scanner to scan the energy beam across the powder bed to consolidate powder material either side of the wiper when the wiper is moving across the powder bed and to scan the energy beam across at least one of the powder layers during two or more strokes of the wiper across the powder bed.Type: ApplicationFiled: April 12, 2021Publication date: September 30, 2021Applicant: RENISHAW PLCInventors: Ceri BROWN, Geoffrey MCFARLAND
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Patent number: 11129643Abstract: A neurosurgical apparatus includes a guide device and a neurosurgical instrument is disclosed. The guide device includes a tube for insertion into the brain and a head attached to the proximal end of the tube for affixing the guide device to a hole formed in the skull. The head has a passageway therethrough in communication with the bore of the tube such that the bore of the tube and the passageway through the head define an internal channel through which a neurosurgical instrument can be passed into the brain of the subject. The neurosurgical instrument is for insertion to a desired brain target through the internal channel of the guide device. The apparatus includes one or more sealing elements for providing a fluid tight seal between the internal channel of the guide device and the exterior of the neurosurgical instrument to prevent fluid leakage from guide tube.Type: GrantFiled: February 27, 2013Date of Patent: September 28, 2021Assignee: RENISHAW PLCInventors: Steven S Gill, Attila Antalfy
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Patent number: 11123799Abstract: This invention concerns an additive manufacturing apparatus for building objects by layerwise consolidation of material. The apparatus comprises a build chamber 101 containing a working area, a plurality of high energy beams 133, 233 for consolidating material deposited in the working area in layers and an optical unit 135 for controlling transmission of the high energy beams onto material in the working area. The optical unit 135 comprises a plurality of independently controllable optical elements 141, 241 each optical element 141, 241 for controlling transmission of at least one of the high energy beams onto the material in the working area, the optical unit 135 movable in the build chamber 101.Type: GrantFiled: July 10, 2019Date of Patent: September 21, 2021Assignee: RENISHAW PLCInventors: David Roberts McMurtry, Geoffrey McFarland, Nicholas John Weston, Ben Ian Ferrar
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Patent number: 11123924Abstract: A powder bed fusion apparatus for building an object in a layer-by-layer manner includes a build platform movable within a build sleeve to define a build volume, a layer formation device for forming layers of powder across the build volume in a working plane and an irradiation device for irradiating powder in the working plane to selectively fuse the powder. The powder bed fusion apparatus further includes a mechanical manipulator arranged to engage with the object and/or a build substrate, to which the object is attached, to tilt the object in a raised position above the working plane such that powder is freed from the object and deposited at a location above the working plane and/or into the build volume.Type: GrantFiled: February 20, 2018Date of Patent: September 21, 2021Assignee: RENISHAW PLCInventors: David Roberts McMurtry, Christopher Sutcliffe, Robin Geoffrey Weston, Paul Campton, David John Whitton, David Beeby
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Publication number: 20210285762Abstract: A method for generating a measurement cycle for inspecting an object using a measurement probe carried by a coordinate positioning apparatus, computer program and apparatus, wherein the measurement cycle includes a measurement path where the measurement probe moves relative to the object enabling inspection of the object using a series of touch trigger measurements. The method includes defining multiple touch trigger measurement points on the surface of the object.Type: ApplicationFiled: August 12, 2019Publication date: September 16, 2021Applicant: RENISHAW PLCInventor: Martin Peter SUMMERS
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Patent number: 11117360Abstract: A device and method for generating scan data and/or slice data for use in an additive manufacturing process, in which an energy beam is scanned across layers of flowable material to consolidate the material in a layer-by-layer manner to build a part. The device includes a display and a processor. The processor is arranged to determine scan data for slices and/or slices of the part to be built in the additive manufacturing process and cause the display to display scan data and/or slices that has been determined whilst determining scan data for other ones of the slices and/or other ones of the slices from the geometric data.Type: GrantFiled: June 3, 2016Date of Patent: September 14, 2021Assignee: RENISHAW PLCInventors: Ramkumar Revanur, Michael Joseph McClelland
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Publication number: 20210278254Abstract: A method of operating a position encoder apparatus, including a scale having features defining position information and a readhead for reading the scale. The method includes: calculating extrapolated position information from at least one previous reading of the scale; comparing an extrapolated position with a position calculated from a reading of the scale to determine any discrepancy between them; using the extrapolated position information whether or not there is a discrepancy; and maintaining a record of any discrepancies.Type: ApplicationFiled: March 25, 2021Publication date: September 9, 2021Applicant: RENISHAW PLCInventor: Andrew Paul GRIBBLE
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Patent number: 11110563Abstract: A method for tool measurement using a non-contact tool setting apparatus mounted to a machine tool, which includes a transmitter for emitting a light beam having a beam width and a receiver for receiving the light beam. The receiver generates a beam intensity signal describing the intensity of received light. The method is for measuring a tool having a nominal tool diameter less than the beam width so fully inserting the tool feature into the light beam would only partially occlude the beam. The method includes moving the tool through the beam thereby causing a change in the intensity signal and generating a trigger signal when the intensity signal crosses a trigger threshold. The tool size is derived using the trigger signal generated. Also, a step of applying a tool length correction that accounts for the nominal tool diameter of the tool being less than the beam width.Type: GrantFiled: August 31, 2018Date of Patent: September 7, 2021Assignee: RENISHAW PLCInventors: Benjamin Jason Merrifield, Edward Benjamin Egglestone, Alan James Holloway
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Patent number: 11104121Abstract: A method of selecting a scanning sequence of a laser beam in a selective laser solidification process, in which one or more objects are formed layer-by-layer by repeatedly depositing a layer of powder on a powder bed and scanning the laser beam over the deposited powder to selectively solidify at least part of the powder layers, includes determining an order in which areas should be scanned by: projecting a debris fallout zone that would be created when solidifying each area based on a gas flow direction of a gas flow passed over the powder bed; determining whether one or more other areas to be solidified fall within the debris fallout zone; and selecting to solidify the one or more other areas that fall within the debris fallout zone before solidifying the area from which the debris fallout zone has been projected.Type: GrantFiled: April 2, 2020Date of Patent: August 31, 2021Assignee: RENISHAW PLCInventor: Ben Ian Ferrar
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Patent number: 11105607Abstract: A method of putting a feature of interest on an object and an optical inspection system of a non-contact probe mounted on a positioning apparatus in a desired relationship. The method includes: a) identifying a target point of interest on the object to be inspected by arranging the non-contact probe and object at a first relative configuration at which a marker feature, projected by the non-contact probe along a projector axis that is not coaxial with the optical inspection system's optical axis, identifies the target point of interest; and b) subsequently moving the non-contact probe and/or object so as to put them at a second relative configuration at which the target point of interest and optical inspection system are at the desired relationship, in which the positioning apparatus is configured to guide such motion in accordance with the control path.Type: GrantFiled: July 26, 2017Date of Patent: August 31, 2021Assignee: RENISHAW PLCInventors: Nicholas John Weston, Yvonne Ruth Huddart
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Publication number: 20210245250Abstract: A powder bed additive manufacturing apparatus includes a build sleeve, a build platform for supporting a powder bed and object during a build, the build platform lowerable in the build sleeve, and at least one acoustic sensing system. The acoustic sensing system includes an acoustic emission sensor and an acoustic waveguide. The acoustic waveguide extends through the build platform such that a receiving end of the acoustic waveguide distal from the acoustic emission sensor abuts a surface of a build substrate removable mounted to the build platform to transmit structure-borne acoustic waves from the build substrate to the acoustic emission sensor.Type: ApplicationFiled: June 26, 2019Publication date: August 12, 2021Applicant: RENISHAW PLCInventors: Damon Mark NORTHEAST, Jonathan MANSELL, Nicholas Henry Hannaford JONES
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Publication number: 20210229215Abstract: A laser beam scanner including a laser beams positioning optic, a plurality of optical fibres for delivering a plurality of laser beams and a fibre termination optic aligned to direct the laser beams from output ends of the plurality of optical fibres to the laser beams positioning optic. The laser beams positioning optic is movable relative to the fibre termination optic to scan the laser beams across a working surface.Type: ApplicationFiled: May 15, 2019Publication date: July 29, 2021Applicant: RENISHAW PLCInventors: Nicholas John WESTON, Geoffrey MCFARLAND
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Patent number: 11060836Abstract: A positioning apparatus including a moveable member moveable along a bearing guideway in a first dimension, the moveable member including at a first end thereof at least first and second bearing members which are preloaded against corresponding first and second sides of a concave corner of the bearing guideway.Type: GrantFiled: April 17, 2018Date of Patent: July 13, 2021Assignee: RENISHAW PLCInventors: Stephen Paul Hunter, David Andrew Larkham
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Publication number: 20210207981Abstract: A sealed encoder module for mounting onto a machine so as to measure relative displacement of first and second parts of the machine. The sealed encoder module can comprise, a scale, a readhead comprising a scale signal receiver, and an integral protective housing which encapsulates at least the scale and said scale signal receiver. The sealed encoder module can be configured to determine and output diagnostic information regarding a scale signal detected by the readhead.Type: ApplicationFiled: March 18, 2021Publication date: July 8, 2021Applicant: RENISHAW PLCInventors: Finlay Jonathan EVANS, James Reynolds HENSHAW, Stephen Lindsey TOCKNELL, Richard David James GEARING
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Publication number: 20210205928Abstract: A powder bed fusion apparatus including a build chamber, a build platform in the build chamber for supporting a powder bed, a layer formation device for forming layers of powder to form the powder bed, a scanner for scanning an energy beam across the powder bed to fuse the powder and a gas circuit for forming a gas flow across the powder bed. The gas circuit includes a separator for separating particles from gas in the gas circuit, a nozzle for propelling gas into the build chamber and an exhaust for extracting gas from the build chamber and delivering the gas to the separator. The exhaust includes an exhaust channel or opening located for receiving powder wiped from the powder bed and/or build platform.Type: ApplicationFiled: October 19, 2018Publication date: July 8, 2021Applicant: RENISHAW PLCInventors: David Edward BEEBY, David John Whitton, Andrew Thomas CRITCHLEY
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Publication number: 20210207938Abstract: Method for measuring an object using a scanning probe carried by a machine tool having a probe holder for the scanning probe and a carrier for the object. The method includes (i) using the machine tool to move the probe holder relative to the carrier along a pre-programmed scan path, (ii) measuring acceleration whilst the pre-programmed scan path is traversed, (iii) collecting probe data whilst the pre-programmed scan path is traversed, and (iv) using the acceleration measured to identify at least one acceleration zone of the pre-programmed scan path and thereby determine one or more positions along the scan path at which the probe data of step (iii) were collected.Type: ApplicationFiled: June 10, 2019Publication date: July 8, 2021Applicant: RENISHAW PLCInventors: John Charles OULD, Thomas Phillip HANDFORD
