Patents by Inventor George Stewart
George Stewart 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: 10974905Abstract: A conveyor chain includes a first link, a second link, and a coupler link. The first link includes a first sprocket-engaging portion and a second sprocket-engaging portion, each protruding laterally away from one another. The second link includes a first sprocket-engaging portion and a second sprocket-engaging portion, each protruding laterally away from one another. The coupler link couples the first link to the second link, and the coupler link is positioned laterally between the first sprocket-engaging portion and the second sprocket-engaging portion of each link. The coupler link includes a first joint pivotably coupled to the first link and a second joint pivotably coupled to the second link. The first joint permits pivoting movement of the first link about a plurality of axes, and the second joint permits pivoting movement of the second link about a plurality of axes.Type: GrantFiled: October 14, 2019Date of Patent: April 13, 2021Assignee: JOY GLOBAL UNDERGROUND MINING LLCInventors: Aaron Philip Walker, Christopher George Stewart
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Patent number: 10951112Abstract: An apparatus is provided for minimizing the peak power demand on an inverter in a power supply with one or more switched reactive loads comprising an AC semiconductor bypass switch connected in parallel with the inverter and a bypass control device. The bypass control device includes filters for selecting load current signals with specific frequencies of interest from the switched reactive loads; a signal processor for sampling and transforming the selected load current signals into frequency domain to identify frequency components of the selected load current signal; an amplitude detector for detecting peak current amplitudes of the identified frequency components of the selected load current signal; and a bypass driver.Type: GrantFiled: April 26, 2018Date of Patent: March 16, 2021Assignee: Edge Electrons LimitedInventors: Jian Carlo Decena Zapata, Neal George Stewart
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Publication number: 20200354150Abstract: A link for a conveyor chain includes a first portion and a second portion laterally spaced apart from the first portion. The first portion includes a first sprocket-engaging pin, and the second portion includes a second sprocket-engaging pin. The first sprocket-engaging pin and the second sprocket-engaging pin protrude laterally away from one another. The first sprocket-engaging pin and the second sprocket-engaging pin may each have an oblong cross-section. At least one retainer can secure a connecting pin against movement relative to at least one of the first portion and the second portion, and each retainer can be positioned substantially within one of the first portion and the second portion.Type: ApplicationFiled: July 20, 2020Publication date: November 12, 2020Inventors: Aaron Philip Walker, Christopher George Stewart
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Patent number: 10797890Abstract: Systems, methods, and software can be used to provide inter-enterprise data communications between enterprise applications on an electronic device. In some aspects, a method comprises: receiving, by a bridge application executing on an electronic device, an interoperation request for a first enterprise, wherein the interoperation request includes a first token and a second token; sending, from the bridge application to an application of the first enterprise, the first token, wherein the application of the first enterprise executes on the electronic device; receiving, by the bridge application from the application of the first enterprise, a certificate in response to the first token, wherein the certificate is encrypted by the second token; decrypting, by the bridge application, the certificate by using the second token; and validating, by the bridge application, the application of the first enterprise based on the decrypted certificate.Type: GrantFiled: February 26, 2018Date of Patent: October 6, 2020Assignee: BlackBerry LimitedInventors: Johnathan George White, Siavash James Joorabchian Hawkins, Fraser George Stewart
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Publication number: 20200238111Abstract: The present invention relates to a composition, textile, and mask for reducing the inhalation of pollutants. The composition includes an aqueous solution of an inorganic iodide compound, a metal phthalocyanine, and a polymeric binder. The inorganic iodide can be cuprous iodide, the metal phthalocyanine can be iron phthalocyanine, and the polymeric binder can be polyvinylpyrrolidone or polyvinyl alcohol. This pollutant-inactivating composition neutralizes pollutants such as nitrogen dioxide, sulfur dioxide, ozone, volatile organic compounds and other unpleasant airborne agents, without requiring elevated temperatures or bulky canisters containing adsorbents. Optionally, a humectant can also be incorporated into the coating solution to retain moisture in the active filter matrix, which enhances the activity of the composition to inactivate oxidizing gases and other toxic constituents of air pollution.Type: ApplicationFiled: April 14, 2020Publication date: July 30, 2020Applicant: Innonix Technologies, Inc.Inventors: Wylie Wing Nien O, Neal George Stewart, Reid Warren von Borstel
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Patent number: 10717603Abstract: A link for a conveyor chain includes a first portion and a second portion laterally spaced apart from the first portion. The first portion includes a first sprocket-engaging pin, and the second portion includes a second sprocket-engaging pin. The first sprocket-engaging pin and the second sprocket-engaging pin protrude laterally away from one another. The first sprocket-engaging pin and the second sprocket-engaging pin may each have an oblong cross-section. At least one retainer can secure a connecting pin against movement relative to at least one of the first portion and the second portion, and each retainer can be positioned substantially within one of the first portion and the second portion.Type: GrantFiled: March 6, 2018Date of Patent: July 21, 2020Assignee: Joy Global Underground Mining LLCInventors: Aaron Philip Walker, Christopher George Stewart
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Publication number: 20200125127Abstract: An apparatus is provided for bypassing a load current going through an AC-AC series voltage regulator under over-current condition, comprising: an AC-AC invertor; an AC semiconductor bypass switch; and a bypass control. The AC-AC invertor and the AC semiconductor bypass switch are connected in parallel. The bypass control is configured to detect a load current signal, an input voltage of the AC-AC series voltage regulator and an output voltage of the AC-AC series voltage regulator and to control the AC semiconductor bypass switch's switching such that the load current under overcurrent condition is shared between the AC-AC invertor and the AC semiconductor bypass switch.Type: ApplicationFiled: June 1, 2018Publication date: April 23, 2020Inventors: Jian Carlo Decena ZAPATA, Gordon CURRIE, Neal George STEWART
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Publication number: 20200115164Abstract: A conveyor chain includes a first link, a second link, and a coupler link. The first link includes a first sprocket-engaging portion and a second sprocket-engaging portion, each protruding laterally away from one another. The second link includes a first sprocket-engaging portion and a second sprocket-engaging portion, each protruding laterally away from one another. The coupler link couples the first link to the second link, and the coupler link is positioned laterally between the first sprocket-engaging portion and the second sprocket-engaging portion of each link. The coupler link includes a first joint pivotably coupled to the first link and a second joint pivotably coupled to the second link. The first joint permits pivoting movement of the first link about a plurality of axes, and the second joint permits pivoting movement of the second link about a plurality of axes.Type: ApplicationFiled: October 14, 2019Publication date: April 16, 2020Inventors: Aaron Philip Walker, Christopher George Stewart
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Patent number: 10617894Abstract: The present invention relates to a composition, textile, and mask for reducing the inhalation of pollutants. The composition includes an aqueous solution of an inorganic iodide compound, a metal phthalocyanine, and a polymeric binder. The inorganic iodide can be cuprous iodide, the metal phthalocyanine can be iron phthalocyanine, and the polymeric binder can be polyvinylpyrrolidone or polyvinyl alcohol. This pollutant-inactivating composition neutralizes pollutants such as nitrogen dioxide, sulfur dioxide, ozone, volatile organic compounds and other unpleasant airborne agents, without requiring elevated temperatures or bulky canisters containing adsorbents. Optionally, a humectant can also be incorporated into the coating solution to retain moisture in the active filter matrix, which enhances the activity of the composition to inactivate oxidizing gases and other toxic constituents of air pollution.Type: GrantFiled: December 29, 2016Date of Patent: April 14, 2020Assignee: Innonix Technologies, IncorporatedInventors: Wylie Wing Nien O, Neal George Stewart, Reid Warren von Borstel
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Patent number: 10604347Abstract: A drive mechanism for a chain conveyor includes an elongated shaft that extends along an axis and is configured to be driven to rotate by a motor. A sprocket is integrally formed with the shaft. The sprocket includes a plurality of lobes that extend around a perimeter of the shaft. Each lobe is spaced apart from an adjacent lobe by a recessed portion. Each of the recessed portions is configured to receive a drive pin of the chain conveyor.Type: GrantFiled: March 6, 2018Date of Patent: March 31, 2020Assignee: Joy Global Underground Mining LLCInventors: Aaron Philip Walker, Christopher George Stewart
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Publication number: 20200059154Abstract: An apparatus is provided for minimizing the peak power demand on an inverter in a power supply with one or more switched reactive loads comprising an AC semiconductor bypass switch connected in parallel with the inverter and a bypass control device. The bypass control device includes filters for selecting load current signals with specific frequencies of interest from the switched reactive loads; a signal processor for sampling and transforming the selected load current signals into frequency domain to identify frequency components of the selected load current signal; an amplitude detector for detecting peak current amplitudes of the identified frequency components of the selected load current signal; and a bypass driver.Type: ApplicationFiled: April 26, 2018Publication date: February 20, 2020Inventors: Jian Carlo Decena ZAPATA, Neal George STEWART
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Patent number: 10558422Abstract: According to one embodiment, a media system communicates with an aggregate device that includes multiple media output devices. When providing media data for presentation, the system adjusts for device clock drift by resampling the media data provided to a media output device based at least in part on a device clock rate difference between a device clock of one of the media output devices and a device clock of another of the media output devices.Type: GrantFiled: April 12, 2018Date of Patent: February 11, 2020Assignee: Apple Inc.Inventors: Jeffrey C. Moore, William George Stewart, Gerhard Lengeling
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Publication number: 20200010277Abstract: In some aspects, a conveyor chain includes a first link, a second link, and a coupler link coupled between the first link and the second link. The first link includes a first portion and a second portion, the second portion oriented parallel to and laterally spaced apart from the first portion. The first portion includes a first sprocket-engaging pin protruding laterally, and the second portion includes a second sprocket-engaging pin protruding laterally. The second link includes a first portion and a second portion. The first portion includes a first sprocket-engaging portion protruding laterally, and the second portion includes a second sprocket-engaging portion protruding laterally. A flight bar is positioned adjacent an end of the first sprocket-engaging portion of the first link.Type: ApplicationFiled: September 16, 2019Publication date: January 9, 2020Inventors: Aaron Philip Walker, Christopher George Stewart
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Publication number: 20190363536Abstract: In the present legacy electrical power generation and distribution system, the power quality delivered to end consumers is being degraded by a number of disruptive technologies and legislative impacts; especially with the rapidly increasing myriad of privately owned and operated domestic and commercial distributed energy generation (DEG) devices connected at any point across a low voltage (LV) distribution network. The present invention bypasses this increasing critical DEG problem by offering a solution comprising an energy processing unit (EPU) that is installed at the edge of the high voltage (HV) transmission grid.Type: ApplicationFiled: August 7, 2019Publication date: November 28, 2019Inventors: Neal George Stewart, Jian Carlo Decena Zapata
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Patent number: 10479641Abstract: Systems, methods, and apparatuses for adjusting and repositioning a coiled tubing tensioning device while deployed. The system comprises a tubing guide for receiving a coiled tubing, a tensioning device for maintaining the coiled tubing in tension, and a tower frame having a moveable platform supporting the weight of the tensioning device. The moveable platform is adjustable vertically to raise and lower the tensioning device with respect to the tower frame, and the tower frame permits the tensioning device to move horizontally with respect to a fixed ground point.Type: GrantFiled: February 24, 2016Date of Patent: November 19, 2019Assignee: HALLIBURTON ENERGY SERVICES, INC.Inventors: George Stewart Cooper, Alan Charles John Turner, Richard Ian Gillings
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Patent number: 10442627Abstract: A conveyor chain includes a first link, a second link, and a coupler link. The first link includes a first sprocket-engaging portion and a second sprocket-engaging portion, each protruding laterally away from one another. The second link includes a first sprocket-engaging portion and a second sprocket-engaging portion, each protruding laterally away from one another. The coupler link couples the first link to the second link, and the coupler link is positioned laterally between the first sprocket-engaging portion and the second sprocket-engaging portion of each link. The coupler link includes a first joint pivotably coupled to the first link and a second joint pivotably coupled to the second link. The first joint permits pivoting movement of the first link about a plurality of axes, and the second joint permits pivoting movement of the second link about a plurality of axes.Type: GrantFiled: March 6, 2018Date of Patent: October 15, 2019Assignee: Joy Global Underground Mining LLCInventors: Aaron Philip Walker, Christopher George Stewart
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Patent number: 10414594Abstract: In some aspects, a conveyor chain includes a first link, a second link, and a coupler link coupled between the first link and the second link. The first link includes a first portion and a second portion, the second portion oriented parallel to and laterally spaced apart from the first portion. The first portion includes a first sprocket-engaging pin protruding laterally, and the second portion includes a second sprocket-engaging pin protruding laterally. The second link includes a first portion and a second portion. The first portion includes a first sprocket-engaging portion protruding laterally, and the second portion includes a second sprocket-engaging portion protruding laterally. A flight bar is positioned adjacent an end of the first sprocket-engaging portion of the first link.Type: GrantFiled: March 6, 2018Date of Patent: September 17, 2019Assignee: Joy Global Underground Mining LLCInventors: Aaron Philip Walker, Christopher George Stewart
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Publication number: 20190268167Abstract: Systems, methods, and software can be used to provide inter-enterprise data communications between enterprise applications on an electronic device. In some aspects, a method comprises: receiving, by a bridge application executing on an electronic device, an interoperation request for a first enterprise, wherein the interoperation request includes a first token and a second token; sending, from the bridge application to an application of the first enterprise, the first token, wherein the application of the first enterprise executes on the electronic device; receiving, by the bridge application from the application of the first enterprise, a certificate in response to the first token, wherein the certificate is encrypted by the second token; decrypting, by the bridge application, the certificate by using the second token; and validating, by the bridge application, the application of the first enterprise based on the decrypted certificate.Type: ApplicationFiled: February 26, 2018Publication date: August 29, 2019Applicant: BlackBerry LimitedInventors: Johnathan George WHITE, Siavash James Joorabchian HAWKINS, Fraser George STEWART
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Patent number: 10392193Abstract: A linkage for moving material from a first end of a conveyor toward a second end of the conveyor includes a first link and a second link. The first link includes a first side edge and a first indicator. The second link includes a second side edge and a second indicator. The second link is coupled to the first link such that the first side edge of the first link overlaps with the second side edge of the second link. Elongation of the first link in the direction of movement causes the first indicator to move relative to the second indicator, and a position of the first indicator relative to the second indicator provides an indication of a wear condition of the first link. In some aspects, a first surface and/or a second surface of one of the links includes a wear indicator representing a surface wear condition.Type: GrantFiled: March 6, 2018Date of Patent: August 27, 2019Assignee: Joy Global Underground Mining LLCInventors: Aaron Philip Walker, Christopher George Stewart
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Publication number: 20190153846Abstract: A technique to facilitate removal of various types of particulates from fluids during well operations. The technique may employ a skid positioned at a surface location. A filtration system is mounted on the skid to enable filtration of particulates as the subject fluid flows from a system inlet to a system outlet. The filtration system comprises a bank of filtering stages arranged generally horizontally on the skid. For example, a first stage may be constructed with a generally horizontal vessel containing a first filter arranged to filter particulates from the fluid. The first stage also may comprise a magnet positioned to retain ferrous debris. Additionally, a second stage receives fluid exiting from the first stage and contains a second filter for further filtering of particulates from the fluid.Type: ApplicationFiled: November 20, 2018Publication date: May 23, 2019Inventors: George Stewart, Charles Svoboda