Patents by Inventor Graham Harris
Graham Harris 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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Publication number: 20240111094Abstract: Described herein are photonic communication platforms that can overcome the memory bottleneck problem, thereby enabling scaling of memory capacity and bandwidth well beyond what is possible with conventional computing systems. Some embodiments provide photonic communication platforms that involve use of photonic modules. Each photonic module includes programmable photonic circuits for placing the module in optical communication with other modules based on the needs of a particular application. The architecture developed by the inventors relies on the use of common photomask sets (or at least one common photomask) to fabricate multiple photonic modules in a single wafer. Photonic modules in multiple wafers can be linked together into a communication platform using optical or electronic means.Type: ApplicationFiled: December 1, 2023Publication date: April 4, 2024Applicant: Lightmatter, Inc.Inventors: Nicholas C. Harris, Carl Ramey, Michael Gould, Thomas Graham, Darius Bunandar, Ryan Braid, Mykhailo Tymchenko
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Publication number: 20240103219Abstract: Described herein are photonic communication platforms that can overcome the memory bottleneck problem, thereby enabling scaling of memory capacity and bandwidth well beyond what is possible with conventional computing systems. Some embodiments provide photonic communication platforms that involve use of photonic modules. Each photonic module includes programmable photonic circuits for placing the module in optical communication with other modules based on the needs of a particular application. The architecture developed by the inventors relies on the use of common photomask sets (or at least one common photomask) to fabricate multiple photonic modules in a single wafer. Photonic modules in multiple wafers can be linked together into a communication platform using optical or electronic means.Type: ApplicationFiled: December 1, 2023Publication date: March 28, 2024Applicant: Lightmatter, Inc.Inventors: Nicholas C. Harris, Carl Ramey, Michael Gould, Thomas Graham, Darius Bunandar, Ryan Braid, Mykhailo Tymchenko
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Publication number: 20230372137Abstract: Embodiments herein discloses an orthotic knee control device providing ease of movement. The orthotic knee control device includes a hydraulic piston connected with a hydraulic chamber, accumulator spring(s) connected with an accumulator chamber, a non-return valve connected in between the hydraulic chamber and the accumulator chamber. The non-return valve allows the flow of an oil from the accumulator chamber to the hydraulic chamber and does not allow the flow of the oil from the hydraulic chamber to the accumulator chamber. Further, the orthotic knee control device includes a motorized valve connected between the hydraulic chamber and the accumulator chamber. Further, the accumulator springs apply pressure to the hydraulic piston, to resist flexion of a knee joint and to aid extension of the knee joint.Type: ApplicationFiled: July 27, 2023Publication date: November 23, 2023Inventors: Chris Duke, Mir Saeed Zahedi, Graham Harris
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Patent number: 11679008Abstract: A self-aligning prosthetic foot and ankle assembly has an ankle unit pivotally mounting a foot component. The ankle unit contains a hydraulic piston and cylinder assembly having a piston which is linearly movable within a cylinder. The axis of the cylinder is coincident with a shin axis defined by a shin connection interface on the ankle unit. Bypass passages containing damping resistance control valves provide continuous hydraulic damping of dorsi and plantar ankle flexion, the unit being such that, over the major part of the range of damped movement, there is no resilient biasing in either the dorsi or the plantar direction. This confers a number of advantages, including stabilisation of standing, balance control, and improved stair-walking and ramp-walking.Type: GrantFiled: June 18, 2018Date of Patent: June 20, 2023Assignee: Blatchford Products LimitedInventors: David Moser, Fadi Abimosleh, Mir Saeed Zahedi, Graham Harris, Stephen Terry Lang, Andrew John Sykes
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Patent number: 11529246Abstract: A prosthetic ankle and foot combination has an ankle joint mechanism constructed to allow damped rotational movement of a foot component relative to a shin component. The mechanism provides a continuous hydraulically damped range of ankle motion during walking with dynamically variable damping resistances, and with independent variation of damping resistances in the plantar-flexion and dorsi-flexion directions. An electronic control system coupled to the ankle joint mechanism includes at least one sensor for generating signals indicative of a kinetic or kinematic parameter of locomotion, the mechanism and the control system being arranged such that the damping resistances effective over the range of motion of the ankle are adapted automatically in response to such signals. Single and dual piston hydraulic damping arrangements are disclosed, including arrangements allowing independent heel-height adjustment.Type: GrantFiled: November 9, 2018Date of Patent: December 20, 2022Assignee: Blatchford Products LimitedInventors: David Moser, Andrew John Sykes, Graham Harris, Stephen Terry Lang, Fadi Abimosleh, Mir Saeed Zahedi
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Patent number: 11432947Abstract: A prosthetic ankle has an ankle joint body (10A) constituting a shin component and a foot component (12). The ankle joint body (10A) is pivotally connected to the foot component (12) by a first pivotal connection (14) defining a medial-lateral ankle joint flexion axis. The ankle joint body (10A) also forms the cylinder of an ankle joint piston and cylinder assembly with a superior-inferior central axis, the cylinder housing a piston (16) with upper and lower piston rods (16A, 16B). The lower piston rod (16B) is pivotally connected to the foot component (12) at a second pivotal connection (18). As the ankle joint body (10A) pivots about the ankle joint flexion axis, the piston (16) moves substantially linearly in the cylinder formed by the ankle joint body. The cylinder is divided into upper and lower chambers (20A, 20B).Type: GrantFiled: July 3, 2018Date of Patent: September 6, 2022Assignee: Blatchford Products LimitedInventors: Mir Saeed Zahedi, Graham Harris, Stephen Terry Lang, Robert Michael Andrew Painter, David Moser
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Patent number: 11246723Abstract: A lower limb prosthesis comprises a foot component and an ankle unit pivotally mounted to the foot component. The ankle unit comprises an ankle joint mechanism comprising a hydraulic piston and cylinder assembly for providing hydraulic damping whenever the ankle joint flexes, and a vacuum mechanism comprising a pneumatic piston and cylinder assembly for generating a vacuum. The hydraulic and pneumatic piston and cylinder assemblies are arranged such that the vacuum mechanism generates a vacuum during plantar-flexion of the ankle unit.Type: GrantFiled: August 8, 2019Date of Patent: February 15, 2022Assignee: BLATCHFORD PRODUCTS LIMITEDInventors: Graham Harris, Mir Saeed Zahedi, Fadi Abimosleh
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Patent number: 11156307Abstract: The present invention relates to a failsafe valve actuator (10) comprising a drive mechanism (12), a drive shaft (42) having a clutch (50) arranged adjacent to a threaded portion (44) of the drive shaft (42), and a clutch actuator (52) coupled to the clutch (50) and arranged to move the clutch (50) between an engaged position in which the clutch (50) engages with the threaded portion (44) of the drive shaft (42) and a disengaged position in which the clutch (50) is disengaged from the drive shaft (42). In response to energisation of the clutch actuator (52) the clutch (50) is moved to the engaged position such that threaded engagement between the drive shaft (42) and clutch (50) transfers rotational movement of the drive shaft (42) by the drive mechanism (12) into axial movement of the drive shaft (42) and holds the drive shaft (42) against a drive shaft bias member when the drive mechanism is inactive.Type: GrantFiled: July 6, 2018Date of Patent: October 26, 2021Inventor: Robert Graham Harris
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Publication number: 20200224785Abstract: The present invention relates to a failsafe valve actuator (10) comprising a drive mechanism (12), a drive shaft (42) having a clutch (50) arranged adjacent to a threaded portion (44) of the drive shaft (42), and a clutch actuator (52) coupled to the clutch (50) and arranged to move the clutch (50) between an engaged position in which the clutch (50) engages with the threaded portion (44) of the drive shaft (42) and a disengaged position in which the clutch (50) is disengaged from the drive shaft (42). In response to energisation of the clutch actuator (52) the clutch (50) is moved to the engaged position such that threaded engagement between the drive shaft (42) and clutch (50) transfers rotational movement of the drive shaft (42) by the drive mechanism (12) into axial movement of the drive shaft (42) and holds the drive shaft (42) against a drive shaft bias member when the drive mechanism is inactive.Type: ApplicationFiled: July 6, 2018Publication date: July 16, 2020Inventor: Robert Graham HARRIS
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Publication number: 20200069440Abstract: A lower limb prosthesis comprises a foot component and an ankle unit pivotally mounted to the foot component. The ankle unit comprises an ankle joint mechanism comprising a hydraulic piston and cylinder assembly for providing hydraulic damping whenever the ankle joint flexes, and a vacuum mechanism comprising a pneumatic piston and cylinder assembly for generating a vacuum. The hydraulic and pneumatic piston and cylinder assemblies are arranged such that the vacuum mechanism generates a vacuum during plantar-flexion of the ankle unit.Type: ApplicationFiled: August 8, 2019Publication date: March 5, 2020Applicant: BLATCHFORD PRODUCTS LIMITEDInventors: Graham HARRIS, Mir Saeed ZAHEDI, Fadi ABIMOSLEH
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Patent number: 10406001Abstract: A lower limb prosthesis comprises a foot component and an ankle unit pivotally mounted to the foot component. The ankle unit comprises an ankle joint mechanism comprising a hydraulic piston and cylinder assembly for providing hydraulic damping whenever the ankle joint flexes, and a vacuum mechanism comprising a pneumatic piston and cylinder assembly for generating a vacuum. The hydraulic and pneumatic piston and cylinder assemblies are arranged such that the vacuum mechanism generates a vacuum during plantar-flexion of the ankle unit.Type: GrantFiled: March 7, 2016Date of Patent: September 10, 2019Assignee: BLATCHFORD PRODUCTS LIMITEDInventors: Graham Harris, Mir Saeed Zahedi, Fadi Abimosleh
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Publication number: 20190142611Abstract: A prosthetic ankle and foot combination has an ankle joint mechanism constructed to allow damped rotational movement of a foot component relative to a shin component. The mechanism provides a continuous hydraulically damped range of ankle motion during walking with dynamically variable damping resistances, and with independent variation of damping resistances in the plantar-flexion and dorsi-flexion directions. An electronic control system coupled to the ankle joint mechanism includes at least one sensor for generating signals indicative of a kinetic or kinematic parameter of locomotion, the mechanism and the control system being arranged such that the damping resistances effective over the range of motion of the ankle are adapted automatically in response to such signals. Single and dual piston hydraulic damping arrangements are disclosed, including arrangements allowing independent heel-height adjustment.Type: ApplicationFiled: November 9, 2018Publication date: May 16, 2019Inventors: David Moser, Andrew John Sykes, Graham Harris, Stephen Terry Lang, Fadi Abimosleh, Mir Saeed Zahedi
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Publication number: 20190046336Abstract: A prosthetic ankle has an ankle joint body (10A) constituting a shin component and a foot component (12). The ankle joint body (10A) is pivotally connected to the foot component (12) by a first pivotal connection (14) defining a medial-lateral ankle joint flexion axis. The ankle joint body (10A) also forms the cylinder of an ankle joint piston and cylinder assembly with a superior-inferior central axis, the cylinder housing a piston (16) with upper and lower piston rods (16A, 16B). The lower piston rod (16B) is pivotally connected to the foot component (12) at a second pivotal connection (18). As the ankle joint body (10A) pivots about the ankle joint flexion axis, the piston (16) moves substantially linearly in the cylinder formed by the ankle joint body. The cylinder is divided into upper and lower chambers (20A, 20B).Type: ApplicationFiled: July 3, 2018Publication date: February 14, 2019Inventors: Mir Saeed ZAHEDI, Graham HARRIS, Stephen Terry LANG, Robert Michael Andrew PAINTER, David MOSER
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Publication number: 20190021882Abstract: A self-aligning prosthetic foot and ankle assembly has an ankle unit pivotally mounting a foot component. The ankle unit contains a hydraulic piston and cylinder assembly having a piston which is linearly movable within a cylinder. The axis of the cylinder is coincident with a shin axis defined by a shin connection interface on the ankle unit. Bypass passages containing damping resistance control valves provide continuous hydraulic damping of dorsi and plantar ankle flexion, the unit being such that, over the major part of the range of damped movement, there is no resilient biasing in either the dorsi or the plantar direction. This confers a number of advantages, including stabilisation of standing, balance control, and improved stair-walking and ramp-walking.Type: ApplicationFiled: June 18, 2018Publication date: January 24, 2019Inventors: David MOSER, Fadi ABIMOSLEH, Mir Saeed ZAHEDI, Graham HARRIS, Stephen Terry LANG, Andrew John SYKES
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Publication number: 20180375808Abstract: A communications system (10) comprises a hand held access terminal (11) which enables a first user and a second user to communicate using a plurality of predetermined questions and answers, which are stored in a repository (12) and are selectable by the first and second users via said access terminal. The questions and answers are stored in a plurality of different languages, so that users of different languages can communicate with each other.Type: ApplicationFiled: December 16, 2016Publication date: December 27, 2018Applicant: UniTalk LTDInventor: Martin Graham HARRIS
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Patent number: 10130495Abstract: A prosthetic ankle and foot combination has an ankle joint mechanism constructed to allow damped rotational movement of a foot component relative to a shin component. The mechanism provides a continuous hydraulically damped range of ankle motion during walking with dynamically variable damping resistances, and with independent variation of damping resistances in the plantar-flexion and dorsi-flexion directions. An electronic control system coupled to the ankle joint mechanism includes at least one sensor for generating signals indicative of a kinetic or kinematic parameter of locomotion, the mechanism and the control system being arranged such that the damping resistances effective over the range of motion of the ankle are adapted automatically in response to such signals. Single and dual piston hydraulic damping arrangements are disclosed, including arrangements allowing independent heel-height adjustment.Type: GrantFiled: August 11, 2015Date of Patent: November 20, 2018Assignee: Blatchford Products LimitedInventors: David Moser, Andrew John Sykes, Graham Harris, Stephen Terry Lang, Fadi Abimosleh, Mir Saeed Zahedi
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Patent number: 10039652Abstract: A prosthetic ankle has an ankle joint body (10A) constituting a shin component and a foot component (12). The ankle joint body (10A) is pivotally connected to the foot component (12) by a first pivotal connection (14) defining a medial-lateral ankle joint flexion axis. The ankle joint body (10A) also forms the cylinder of an ankle joint piston and cylinder assembly with a superior-inferior central axis, the cylinder housing a piston (16) with upper and lower piston rods (16A, 16B). The lower piston rod (16B) is pivotally connected to the foot component (12) at a second pivotal connection (18). As the ankle joint body (10A) pivots about the ankle joint flexion axis, the piston (16) moves substantially linearly in the cylinder formed by the ankle joint body. The cylinder is divided into upper and lower chambers (20A, 20B).Type: GrantFiled: July 23, 2013Date of Patent: August 7, 2018Assignee: Blatchford Products LimitedInventors: Mir Saeed Zahedi, Graham Harris, Stephen Terry Lang, Robert Michael Andrew Painter, David Moser
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Patent number: 9999526Abstract: A self-aligning prosthetic foot and ankle assembly has an ankle unit pivotally mounting a foot component. The ankle unit contains a hydraulic piston and cylinder assembly having a piston which is linearly movable within a cylinder. The axis of the cylinder is coincident with a shin axis defined by a shin connection interface on the ankle unit. Bypass passages containing damping resistance control valves provide continuous hydraulic damping of dorsi and plantar ankle flexion, the unit being such that, over the major part of the range of damped movement, there is no resilient biasing in either the dorsi or the plantar direction. This confers a number of advantages, including stabilization of standing, balance control, and improved stair-walking and ramp-walking.Type: GrantFiled: August 3, 2016Date of Patent: June 19, 2018Assignee: Blatchford Products LimitedInventors: David Moser, Fadi Abimosleh, Mir Saeed Zahedi, Graham Harris, Stephen Terry Lang, Andrew John Sykes
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Publication number: 20180036149Abstract: A lower limb prosthesis comprises a foot component and an ankle unit pivotally mounted to the foot component. The ankle unit comprises an ankle joint mechanism comprising a hydraulic piston and cylinder assembly for providing hydraulic damping whenever the ankle joint flexes, and a vacuum mechanism comprising a pneumatic piston and cylinder assembly for generating a vacuum. The hydraulic and pneumatic piston and cylinder assemblies are arranged such that the vacuum mechanism generates a vacuum during plantar-flexion of the ankle unit.Type: ApplicationFiled: March 7, 2016Publication date: February 8, 2018Applicant: BLATCHFORD PRODUCTS LIMITEDInventors: Graham HARRIS, Mir Saeed ZAHEDI, Fadi ABIMOSLEH
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Publication number: 20170027717Abstract: A self-aligning prosthetic foot and ankle assembly has an ankle unit pivotally mounting a foot component. The ankle unit contains a hydraulic piston and cylinder assembly having a piston which is linearly movable within a cylinder. The axis of the cylinder is coincident with a shin axis defined by a shin connection interface on the ankle unit. Bypass passages containing damping resistance control valves provide continuous hydraulic damping of dorsi and plantar ankle flexion, the unit being such that, over the major part of the range of damped movement, there is no resilient biasing in either the dorsi or the plantar direction. This confers a number of advantages, including stabilisation of standing, balance control, and improved stair-walking and ramp-walking.Type: ApplicationFiled: August 3, 2016Publication date: February 2, 2017Inventors: David Moser, Fadi Abimosleh, Mir Saeed Zahedi, Graham Harris, Stephen Terry Lang, Andrew John Sykes