Patents by Inventor David James Fleming
David James Fleming 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: 11850361Abstract: A respiratory treatment apparatus generates an indication of inspiration or expiration based on a measure of motor current of a flow generator. In an example, first and second current signals are derived from the measurement. The first derived current signal may be a long term measure or average of current and the second derived current signal may be a short term measure or average of current. A processor 120 determines an indication of inspiration or expiration as a function of the first and second derived current signals. The function of the first derived current signal and the second derived current signal may be a comparison of the derived current signals. The derived signals may be determined by filtering. The indication of inspiration or expiration may serve as a trigger or cycle control for changing treatment pressure in synchrony with patient respiration without measured signals from pressure, flow or speed sensors.Type: GrantFiled: June 7, 2021Date of Patent: December 26, 2023Assignee: RESMED MOTOR TECHNOLOGIES INC.Inventors: David James Fleming, Michael Grunberg
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Publication number: 20230245105Abstract: A method for assisting wallet providers in regulatory compliance for blockchain transactions includes: receiving, by a receiver of a processing server, a new blockchain transaction from a first computing device, the new blockchain including at least a destination address associated with a blockchain wallet as a recipient for the new blockchain transaction; generating, by a processor of the processing server, a reference identifier for the new blockchain transaction; identifying, by the processor of the processing server, a profile for the blockchain wallet based on the destination address; transmitting, by a transmitter of the processing server, the reference identifier to the first computing device; and transmitting, by the transmitter of the processing server, a notification message to a second computing device, the notification message including at least the reference identifier and data associated with the blockchain wallet.Type: ApplicationFiled: April 4, 2023Publication date: August 3, 2023Applicant: MASTERCARD ASIA/PACIFIC PTE. LTD.Inventors: Donghao HUANG, Hancong GUAN, Srinath RAVINATHAN, Mohammed Sadiq AHMAD, Rajasekaran DHAMODHARAN, Steven C. DAVIS, Rakesh YADAV, Sébastien LE CALLONNEC, David James FLEMING
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Patent number: 11716002Abstract: A stator assembly has coils in a distributed winding configuration. A poly-phase switched reluctance motor assembly may include a stator assembly with multiple coils in a distributed winding configuration. The stator assembly may have a central bore into which a rotor assembly having multiple poles is received and configured to rotate. A method of controlling a switched reluctance motor may include at least three phases wherein during each conduction period a first phase is energized with negative direction current, a second phase is energized with positive current and there is at least one non-energized phase. During each commutation period either the first phase or second phase switches off to a non-energized state and one of the non-energized phases switches on to an energized state with the same direction current as the first or second phase that was switched off. The switched reluctance motor may include a distributed winding configuration.Type: GrantFiled: October 15, 2021Date of Patent: August 1, 2023Assignee: RESMED MOTOR TECHNOLOGIES INC.Inventors: Aleksandr S. Nagorny, Siavash Sadeghi, David James Fleming, Michael Bruce Moir
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Patent number: 11640601Abstract: A method for assisting wallet providers in regulatory compliance for blockchain transactions includes: receiving, by a receiver of a processing server, a new blockchain transaction from a first computing device, the new blockchain including at least a destination address associated with a blockchain wallet as a recipient for the new blockchain transaction; generating, by a processor of the processing server, a reference identifier for the new blockchain transaction; identifying, by the processor of the processing server, a profile for the blockchain wallet based on the destination address; transmitting, by a transmitter of the processing server, the reference identifier to the first computing device; and transmitting, by the transmitter of the processing server, a notification message to a second computing device, the notification message including at least the reference identifier and data associated with the blockchain wallet.Type: GrantFiled: August 28, 2020Date of Patent: May 2, 2023Assignee: MASTERCARD INTERNATIONAL INCORPORATEDInventors: Donghao Huang, Hancong Guan, Srinath Ravinathan, Mohammed Sadiq Ahmad, Rajasekaran Dhamodharan, Steven C. Davis, Rakesh Yadav, Sébastien Le Callonnec, David James Fleming
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Patent number: 11604770Abstract: The present disclosure relates to secure and verifiable storage and retrieval of data, in particular in the context of product tracking. According to one aspect there is provided a computer-implemented verifiable data storage method comprising: receiving a product serial number; receiving an account identifier; producing a non-invertible hash by operating on the product serial number and the account identifier; and causing the hash to be written to a secure distributed data store. According to another aspect there is provided a computer-implemented verification method comprising: receiving a product serial number; receiving an account identifier; producing a non-invertible hash by operating on the product serial number and the account identifier; searching a secure distributed data store for the hash; and depending on a result of the searching, providing confirmation or denial of the hash's presence in the secure distributed data store.Type: GrantFiled: November 27, 2019Date of Patent: March 14, 2023Assignee: MASTERCARD INTERNATIONAL INCORPORATEDInventors: Robert Collins, Stephen Elder, David James Fleming
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Publication number: 20220062570Abstract: A respiratory treatment apparatus generates an indication of inspiration or expiration based on a measure of motor current of a flow generator. In an example, first and second current signals are derived from the measurement. The first derived current signal may be a long term measure or average of current and the second derived current signal may be a short term measure or average of current. A processor 120 determines an indication of inspiration or expiration as a function of the first and second derived current signals. The function of the first derived current signal and the second derived current signal may be a comparison of the derived current signals. The derived signals may be determined by filtering. The indication of inspiration or expiration may serve as a trigger or cycle control for changing treatment pressure in synchrony with patient respiration without measured signals from pressure, flow or speed sensors.Type: ApplicationFiled: June 7, 2021Publication date: March 3, 2022Applicant: RESMED MOTOR TECHNOLOGIES INC.Inventors: David James FLEMING, Michael GRUNBERG
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Publication number: 20220067711Abstract: A method for assisting wallet providers in regulatory compliance for blockchain transactions includes: receiving, by a receiver of a processing server, a new blockchain transaction from a first computing device, the new blockchain including at least a destination address associated with a blockchain wallet as a recipient for the new blockchain transaction; generating, by a processor of the processing server, a reference identifier for the new blockchain transaction; identifying, by the processor of the processing server, a profile for the blockchain wallet based on the destination address; transmitting, by a transmitter of the processing server, the reference identifier to the first computing device; and transmitting, by the transmitter of the processing server, a notification message to a second computing device, the notification message including at least the reference identifier and data associated with the blockchain wallet.Type: ApplicationFiled: August 28, 2020Publication date: March 3, 2022Applicant: MASTERCARD INTERNATIONAL INCORPORATEDInventors: Donghao Huang, Hancong Guan, Srinath Ravinathan, Mohammed Sadiq Ahmad, Rajasekaran Dhamodharan, Steven C. Davis, Rakesh Yadav, Sébastien Le Callonnec, David James Fleming
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Publication number: 20220037972Abstract: A stator assembly has coils in a distributed winding configuration. A poly-phase switched reluctance motor assembly may include a stator assembly with multiple coils in a distributed winding configuration. The stator assembly may have a central bore into which a rotor assembly having multiple poles is received and configured to rotate. A method of controlling a switched reluctance motor may include at least three phases wherein during each conduction period a first phase is energized with negative direction current, a second phase is energized with positive current and there is at least one non-energized phase. During each commutation period either the first phase or second phase switches off to a non-energized state and one of the non-energized phases switches on to an energized state with the same direction current as the first or second phase that was switched off. The switched reluctance motor may include a distributed winding configuration.Type: ApplicationFiled: October 15, 2021Publication date: February 3, 2022Applicant: RESMED MOTOR TECHNOLOGIES INC.Inventors: Aleksandr S. Nagorny, Siavash Sadeghi, David James Fleming, Michael Bruce Moir
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Patent number: 11207480Abstract: A method of a control system controls an inductance motor in a device that may include an impeller using a pressure compensation control system. The control system may be implemented in a respiratory pressure therapy device. The control system may include a sensor configured to provide a pressure signal indicative of the pressure of a flow of fluid produced by the device. A measured pressure may be compared to a set pressure to determine a pressure error. A slip frequency may be adjusted as a function of the pressure error in an attempt to eliminate or minimise the pressure error.Type: GrantFiled: March 20, 2020Date of Patent: December 28, 2021Assignee: ResMed Motor Technologies Inc.Inventors: David James Fleming, Michael Grunberg, Aleksandr S. Nagorny, Siavash Sadeghi
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Patent number: 11177728Abstract: A stator assembly has coils in a distributed winding configuration. A poly-phase switched reluctance motor assembly may include a stator assembly with multiple coils in a distributed winding configuration. The stator assembly may have a central bore into which a rotor assembly having multiple poles is received and configured to rotate. A method of controlling a switched reluctance motor may include at least three phases wherein during each conduction period a first phase is energized with negative direction current, a second phase is energized with positive current and there is at least one non-energized phase. During each commutation period either the first phase or second phase switches off to a non-energized state and one of the non-energized phases switches on to an energized state with the same direction current as the first or second phase that was switched off. The switched reluctance motor may include a distributed winding configuration.Type: GrantFiled: February 19, 2020Date of Patent: November 16, 2021Assignee: ResMed Motor Technologies Inc.Inventors: Aleksandr S. Nagorny, Siavash Sadeghi, David James Fleming, Michael Bruce Moir
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Patent number: 11081946Abstract: A stator assembly has coils in a distributed winding configuration. A poly-phase switched reluctance motor assembly 3002 may include a stator assembly with multiple coils in a distributed winding configuration. The stator assembly may have a central bore into which a rotor assembly having multiple poles is received and configured to rotate. A method of controlling a switched reluctance motor may include at least three phases wherein during each conduction period a first phase is energized with negative direction current, a second phase is energized with positive current and there is at least one non-energized phase. During each commutation period either the first phase or second phase switches off to a non-energized state and one of the non-energized phases switches on to an energized state with the same direction current as the first or second phase that was switched off. The switched reluctance motor may include a distributed winding configuration.Type: GrantFiled: March 3, 2020Date of Patent: August 3, 2021Assignee: ResMed Motor Technologies Inc.Inventors: Aleksandr S. Nagorny, Siavash Sadeghi, David James Fleming, Michael Bruce Moir
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Patent number: 11052206Abstract: A respiratory treatment apparatus generates an indication of inspiration or expiration based on a measure of motor current of a flow generator. In an example, first and second current signals are derived from the measurement. The first derived current signal may be a long term measure or average of current and the second derived current signal may be a short term measure or average of current. A processor (120) determines an indication of inspiration or expiration as a function of the first and second derived current signals. The function of the first derived current signal and the second derived current signal may be a comparison of the derived current signals. The derived signals may be determined by filtering. The indication of inspiration or expiration may serve as a trigger or cycle control for changing treatment pressure in synchrony with patient respiration without measured signals from pressure, flow or speed sensors.Type: GrantFiled: May 13, 2013Date of Patent: July 6, 2021Assignee: ResMed Motor Technologies Inc.Inventors: David James Fleming, Michael Grunberg
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Patent number: 10778625Abstract: An electronic business postal system collects, clears and delivers electronic business mail through a closed access, secure messaging system. A collection subsystem consists of access portals that are associated with secured system nodes. The access portals provide authenticated users access to the system to send and retrieve electronic business mail that includes postal system electronic delivery addresses, physical delivery addresses, or both. Secured message servers that are associated with the respective access portals process the electronic business mail into uniquely identified messages for delivery over the system nodes and also process received messages to provide the corresponding electronic business mail to the intended recipients through associated access portals. A delivery subsystem directs the messages through the system nodes associated with the senders' access portals to the system nodes associated with the recipients' access portals.Type: GrantFiled: July 30, 2018Date of Patent: September 15, 2020Assignee: Escher Group (IRL) LimitedInventors: Liam Church, Fionnuala Higgins, David James Fleming
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Patent number: 10742102Abstract: A stator assembly has coils in a distributed winding configuration. A poly-phase switched reluctance motor assembly 3002 may include a stator assembly with multiple coils in a distributed winding configuration. The stator assembly may have a central bore into which a rotor assembly having multiple poles is received and configured to rotate. A method of controlling a switched reluctance motor may include at least three phases wherein during each conduction period a first phase is energized with negative direction current, a second phase is energized with positive current and there is at least one non-energized phase. During each commutation period either the first phase or second phase switches off to a non-energized state and one of the non-energized phases switches on to an energized state with the same direction current as the first or second phase that was switched off. The switched reluctance motor may include a distributed winding configuration.Type: GrantFiled: January 16, 2015Date of Patent: August 11, 2020Assignee: ResMed Motor Technologies Inc.Inventors: Aleksandr S. Nagorny, Siavash Sadeghi, David James Fleming, Michael Bruce Moir
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Publication number: 20200215282Abstract: A method of a control system controls an inductance motor in a device that may include an impeller using a pressure compensation control system. The control system may be implemented in a respiratory pressure therapy device. The control system may include a sensor configured to provide a pressure signal indicative of the pressure of a flow of fluid produced by the device. A measured pressure may be compared to a set pressure to determine a pressure error. A slip frequency may be adjusted as a function of the pressure error in an attempt to eliminate or minimise the pressure error.Type: ApplicationFiled: March 20, 2020Publication date: July 9, 2020Applicant: RESMED MOTOR TECHNOLOGIES INC.Inventors: David James Fleming, Michael Grunberg, Aleksandr S. Nagorny, Siavash Sadeghi
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Publication number: 20200204052Abstract: A stator assembly has coils in a distributed winding configuration. A poly-phase switched reluctance motor assembly 3002 may include a stator assembly with multiple coils in a distributed winding configuration. The stator assembly may have a central bore into which a rotor assembly having multiple poles is received and configured to rotate. A method of controlling a switched reluctance motor may include at least three phases wherein during each conduction period a first phase is energized with negative direction current, a second phase is energized with positive current and there is at least one non-energized phase. During each commutation period either the first phase or second phase switches off to a non-energized state and one of the non-energized phases switches on to an energized state with the same direction current as the first or second phase that was switched off. The switched reluctance motor may include a distributed winding configuration.Type: ApplicationFiled: March 3, 2020Publication date: June 25, 2020Applicant: RESMED MOTOR TECHNOLOGIES INC.Inventors: Aleksandr S. Nagorny, Siavash Sadeghi, David James Fleming, Michael Bruce Moir
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Publication number: 20200195109Abstract: A stator assembly has coils in a distributed winding configuration. A poly-phase switched reluctance motor assembly may include a stator assembly with multiple coils in a distributed winding configuration. The stator assembly may have a central bore into which a rotor assembly having multiple poles is received and configured to rotate. A method of controlling a switched reluctance motor may include at least three phases wherein during each conduction period a first phase is energized with negative direction current, a second phase is energized with positive current and there is at least one non-energized phase. During each commutation period either the first phase or second phase switches off to a non-energized state and one of the non-energized phases switches on to an energized state with the same direction current as the first or second phase that was switched off. The switched reluctance motor may include a distributed winding configuration.Type: ApplicationFiled: February 19, 2020Publication date: June 18, 2020Applicant: RESMED MOTOR TECHNOLOGIES INC.Inventors: Aleksandr S. NAGORNY, Siavash Sadeghi, David James Fleming, Michael Bruce Moir
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Publication number: 20200174973Abstract: The present disclosure relates to secure and verifiable storage and retrieval of data, in particular in the context of product tracking. According to one aspect there is provided a computer-implemented verifiable data storage method comprising: receiving a product serial number; receiving an account identifier; producing a non-invertible hash by operating on the product serial number and the account identifier; and causing the hash to be written to a secure distributed data store. According to another aspect there is provided a computer-implemented verification method comprising: receiving a product serial number; receiving an account identifier; producing a non-invertible hash by operating on the product serial number and the account identifier; searching a secure distributed data store for the hash; and depending on a result of the searching, providing confirmation or denial of the hash's presence in the secure distributed data store.Type: ApplicationFiled: November 27, 2019Publication date: June 4, 2020Applicant: MASTERCARD INTERNATIONAL INCORPORATEDInventors: Robert COLLINS, Stephen ELDER, David James FLEMING
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Patent number: 10625035Abstract: A method of a control system (2200) controls an inductance motor in a blower including an impeller and volute using a pressure compensation control system. The control system may be implemented in a respiratory pressure therapy device. The control system may include a sensor configured to provide a pressure signal indicative of the pressure of a flow of fluid produced by the blower. A measured pressure may be compared to a set pressure to determine a pressure error. A slip frequency may be adjusted as a function of the pressure error in an attempt to eliminate or minimise the pressure error.Type: GrantFiled: September 16, 2015Date of Patent: April 21, 2020Assignee: ResMed Motor Technologies Inc.Inventors: David James Fleming, Michael Grunberg, Aleksandr S. Nagorny, Siavash Sadeghi
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Publication number: 20180367485Abstract: An electronic business postal system collects, clears and delivers electronic business mail through a closed access, secure messaging system. A collection subsystem consists of access portals that are associated with secured system nodes. The access portals provide authenticated users access to the system to send and retrieve electronic business mail that includes postal system electronic delivery addresses, physical delivery addresses, or both. Secured message servers that are associated with the respective access portals process the electronic business mail into uniquely identified messages for delivery over the system nodes and also process received messages to provide the corresponding electronic business mail to the intended recipients through associated access portals. A delivery subsystem directs the messages through the system nodes associated with the senders' access portals to the system nodes associated with the recipients' access portals.Type: ApplicationFiled: July 30, 2018Publication date: December 20, 2018Inventors: Liam Church, Fionnuala Higgins, David James Fleming