Patents by Inventor Ian Stewart

Ian 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).

  • Patent number: 10964959
    Abstract: A seal (34) for a fuel cell (10), which includes multiple bipolar plates (13) and at least one membrane electrode assembly (12), the seal (34) having a seal body (40) surrounding a free inner chamber (42) is provided. It is provided that at least two flow barriers (46) pointing into the inner chamber (42) are formed as a single piece with the seal body (40), the flow barriers (46) being situated at a distance from the seal body (40) by at least one connecting element (48).
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: March 30, 2021
    Assignees: Volkswagen AG, Audi AG
    Inventors: Ian Stewart, Darcy McGowan
  • Publication number: 20210013537
    Abstract: A fuel cell system comprises a clamping system for a fuel cell stack, the clamping system including a plurality of disc springs. The disc springs are connected together in a bonded and/or force-fitting manner on a plane perpendicular to an axis of rotational symmetry running through the center of the circle described by the disc.
    Type: Application
    Filed: March 4, 2019
    Publication date: January 14, 2021
    Inventors: Ian STEWART, Campbell PERRY, Amy WARKENTIN
  • Patent number: 10790518
    Abstract: An electrical contact device for the diversion of electrical current from a fuel cell stack can have a plurality of electrically conductive contact regions which are delineated from each other. A plurality of electrically conductive first contact structures connects each, or a plurality of, the contact region(s) to an external load current circuit. Via at least one switching element arranged in a first contact structure, an electrically conductive connection may be disconnected by the first contact structure, in particular between at least one contact region and a load current circuit. In this way it is possible to adjust the overall resistance of the contact structure, and thus the Joule heat produced in the contact regions. Second contact structures that are arranged between the contact regions enable a further increased variability of the overall electrical resistance of the contact device.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: September 29, 2020
    Assignees: VOLKSWAGEN AG, AUDI AG
    Inventors: Ian Stewart, Bevan Hoskyn Moss
  • Publication number: 20200254168
    Abstract: A method of peritoneal removal of electrolytes and inflammatory mediators. The method begins with infusing a treatment solution into the peritoneal cavity of a patient by way of a catheter. The treatment solution is drained from the peritoneal cavity by way of the catheter. During the draining, the treatment solution is filtered for removing electrolytes and inflammatory mediators.
    Type: Application
    Filed: April 24, 2020
    Publication date: August 13, 2020
    Applicant: Government of the United States as Represented by the Secretary of the Air Force
    Inventors: Ian Stewart, Jonathan Sosnov, James Ross
  • Patent number: 10731331
    Abstract: A sock anchor unit (10) comprises an inner longitudinal hollow spine (12), an outer fabric sleeve (14) arranged to envelop the outside surface of the inner hollow spine (12) such that a gap is defined between the outside surface of the inner hollow spine (12) and an inner surface of the outer fabric sleeve (14) and a plurality of elongated reinforcing members (22), wherein each elongated reinforcing member (22) extends longitudinally within the gap. The inner hollow spine (12) comprises at least one substantially laterally extending opening from inside to outside of the inner hollow spine (12). The opening allows cementitious fluid which is pumped into the anchor unit to fill the gap between the hollow spine (12) and outer fabric sleeve. A fastening member (28, 32) is provided on each end of the sock anchor unit (10).
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: August 4, 2020
    Inventors: Terence Foster, Benoit Pierre Augustin Pericard, Ian Stewart Alexander Murray
  • Publication number: 20190393518
    Abstract: A bipolar plate seal assembly for a fuel cell is provided. The bipolar plate seal assembly includes: a bipolar plate having a flow field for a reactant medium on at least one of its main sides, and a supply area arranged adjacent to the flow field, in which supply ports for feeding and discharging the reactant medium and optionally for feeding and discharging a coolant are arranged; and at least one seal assembly having an electrically insulating layer covering at least one or more sections of the supply area of the bipolar plate and having recesses that correspond to the supply ports of the bipolar plate, and for each recess, a seal circumferential thereto.
    Type: Application
    Filed: January 24, 2018
    Publication date: December 26, 2019
    Applicants: Volkswagen AG, Audi AG
    Inventors: Peter BACH, Andrew DESOUZA, Ian STEWART
  • Patent number: 10497947
    Abstract: A seal (34) for a fuel cell (10), which includes multiple bipolar plates (13) and at least one membrane electrode assembly (12), the seal (34) having a seal body (40) surrounding a free inner chamber (42) is provided. It is provided that at least two flow barriers (46) pointing into the inner chamber (42) are formed as a single piece with the seal body (40), the flow barriers (46) being situated at a distance from the seal body (40) by at least one connecting element (48).
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: December 3, 2019
    Assignees: Volkswagen AG, Audi AG
    Inventors: Ian Stewart, Darcy McGowan
  • Publication number: 20190360193
    Abstract: A sock anchor unit (10) comprises an inner longitudinal hollow spine (12), an outer fabric sleeve (14) arranged to envelop the outside surface of the inner hollow spine (12) such that a gap is defined between the outside surface of the inner hollow spine (12) and an inner surface of the outer fabric sleeve (14) and a plurality of elongated reinforcing members (22), wherein each elongated reinforcing member (22) extends longitudinally within the gap. The inner hollow spine (12) comprises at least one substantially laterally extending opening from inside to outside of the inner hollow spine (12). The opening allows cementitious fluid which is pumped into the anchor unit to fill the gap between the hollow spine (12) and outer fabric sleeve. A fastening member (28, 32) is provided on each end of the sock anchor unit (10).
    Type: Application
    Filed: January 17, 2018
    Publication date: November 28, 2019
    Inventors: Terence FOSTER, Benoit Pierre Augustin PERICARD, Ian Stewart Alexander MURRAY
  • Publication number: 20190356000
    Abstract: A seal (34) for a fuel cell (10), which includes multiple bipolar plates (13) and at least one membrane electrode assembly (12), the seal (34) having a seal body (40) surrounding a free inner chamber (42) is provided. It is provided that at least two flow barriers (46) pointing into the inner chamber (42) are formed as a single piece with the seal body (40), the flow barriers (46) being situated at a distance from the seal body (40) by at least one connecting element (48).
    Type: Application
    Filed: July 31, 2019
    Publication date: November 21, 2019
    Inventors: Ian Stewart, Darcy McGowan
  • Publication number: 20190290220
    Abstract: A control unit for a medical device wherein the control unit comprises a pump, a conduit and control means for controlling the flow of fluid from the pump through the conduit; and wherein the conduit is a rigid internal passage located in the control unit.
    Type: Application
    Filed: December 21, 2017
    Publication date: September 26, 2019
    Inventors: Carl Estcourt Tucker, Troy A. Baker, Graham Peter Wilson, Patrick Gerrard Linnane, Ian Stewart Tabron, Wayne Lee Bonnefin, Stefan Loof, Thomas Bergens
  • Publication number: 20190180998
    Abstract: A time of flight (“TOF”) mass spectrometer and method thereof. The TOF mass spectrometer including: an ion source configured to produce ions having a plurality of m/z values; a detector for detecting ions produced by the ion source; a tilt correction device located along a portion of a reference ion flight path extending from the ion source to a planar surface of the detector; wherein the tilt correction device includes tilt correction electrodes configured to generate at least one dipole electric field across the reference ion flight path, the at least one dipole electric field being configured to tilt an isochronous plane of ions produced by the ion source so as to correct a previous angular misalignment between the isochronous plane and the planar surface of the detector.
    Type: Application
    Filed: February 21, 2019
    Publication date: June 13, 2019
    Applicant: SHIMADZU CORPORATION
    Inventors: Hamish Ian STEWART, Matthew GILL, Roger GILES
  • Patent number: 10269549
    Abstract: A time of flight (“TOF”) mass spectrometer including an ion source, a detector, and a tilt correction device. The ion source is configured to produce ions having a plurality of m/z values. The detector detects ions produced by the ion source. The tilt correction device is located along a portion of a reference ion flight path extending from the ion source to a planar surface of the detector and includes tilt correction electrodes configured to generate at least one dipole electric field across the reference ion flight path. The at least one dipole electric field is configured to tilt an isochronous plane of ions produced by the ion source so as to correct a previous angular misalignment between the isochronous plane and the planar surface of the detector.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: April 23, 2019
    Assignee: SHIMADZU CORPORATION
    Inventors: Hamish Ian Stewart, Matthew Gill, Roger Giles
  • Patent number: 10122024
    Abstract: A bipolar plate (10) for a fuel cell, including a first half plate (20) having a first thickness (21) and a second half plate (30) having a second thickness (31), the first half plate (20) and the second half plate (30) each being situated with one of their flat sides facing one another, and the first half plate (20) forming a first flow field (22) on its outer side for a first operating medium and the second half plate (30) forming a second flow field (32) on its outer side for a second operating medium is provided. It is provided that the first thickness (21) of the first half plate (20) is on average smaller, at least in sections, than the second thickness (31) of the second half plate (30).
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: November 6, 2018
    Assignee: Volkswagen AG
    Inventors: Ian Stewart, Christian Martin Zillich, Torsten Schwarz
  • Patent number: 10092250
    Abstract: A control unit for a medical device wherein the control unit includes a pump, a conduit and control means for controlling the flow of fluid from the pump through the conduit; and wherein the conduit is a rigid internal passage located in the control unit.
    Type: Grant
    Filed: January 23, 2007
    Date of Patent: October 9, 2018
    Assignee: SWELLING SOLUTIONS, INC.
    Inventors: Carl Estcourt Tucker, Troy A. Baker, Graham Peter Wilson, Patrick Gerrard Linnane, Ian Stewart Tabron, Wayne Lee Bonnefin, Stefan Loof, Thomas Bergens
  • Patent number: 10020520
    Abstract: The invention relates to a bipolar plate (10) for a fuel cell (100), comprising—an internal coolant flow field (33), which comprises a coolant channel (43), and—a first and a second flat side (11, 12) with a first and second reactant flow field (31, 32) respectively, which has at least one first and second channel structure (41, 42) respectively, wherein—the first and the second channel structure (41, 42) each form a trunk channel (44) and branch channels (46), wherein the branch channels (46) branch off in a branching region (48) from the respective trunk channel (44), and a first intermediate region (51) is formed between the branch channels (46) of the first channel structure (31), and a second intermediate region (52) is formed between the branch channels (46) of the second channel structure (32), wherein normal projections of the first and second intermediate region (51, 52) onto a center plane (56) of the bipolar plate (10), which center plane is arranged between the two flat sides (11, 12) of the bipol
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: July 10, 2018
    Assignees: Volkswagen AG, Audi AG
    Inventors: Matej Kusy, Ian Stewart, Brian Dickson
  • Publication number: 20180110479
    Abstract: A control unit for a medical device wherein the control unit comprises a pump, a conduit and control means for controlling the flow of fluid from the pump through the conduit; and wherein the conduit is a rigid internal passage located in the control unit.
    Type: Application
    Filed: December 21, 2017
    Publication date: April 26, 2018
    Inventors: Carl Estcourt Tucker, Troy A. Baker, Graham Peter Wilson, Patrick Gerrard Linnane, Ian Stewart Tabron, Wayne Lee Bonnefin, Stefan Loof, Thomas Bergens
  • Publication number: 20180104401
    Abstract: A method of peritoneal removal of electrolytes and inflammatory mediators. The method begins with infusing a treatment solution into the peritoneal cavity of a patient by way of a catheter. The treatment solution is drained from the peritoneal cavity by way of the catheter. During the draining, the treatment solution is filtered for removing electrolytes and inflammatory mediators.
    Type: Application
    Filed: October 13, 2017
    Publication date: April 19, 2018
    Applicant: Government of the United States as Represented by the Secretary of the Air Force
    Inventors: Ian Stewart, Jonathan Sosnov, James Ross
  • Publication number: 20180090772
    Abstract: An electrical contact device for the diversion of electrical current from a fuel cell stack can have a plurality of electrically conductive contact regions which are delineated from each other. A plurality of electrically conductive first contact structures connects each, or a plurality of, the contact region(s) to an external load current circuit. Via at least one switching element arranged in a first contact structure, an electrically conductive connection may be disconnected by the first contact structure, in particular between at least one contact region and a load current circuit. In this way it is possible to adjust the overall resistance of the contact structure, and thus the Joule heat produced in the contact regions. Second contact structures that are arranged between the contact regions enable a further increased variability of the overall electrical resistance of the contact device.
    Type: Application
    Filed: September 26, 2017
    Publication date: March 29, 2018
    Inventors: Ian STEWART, Bevan Hoskyn Moss
  • Publication number: 20180034074
    Abstract: A sealed membrane electrode assembly (MEA) and a method of sealing the MEA comprises the steps of providing a frame around a periphery of the MEA to form a framed MEA; providing a through-hole in the frame; placing the framed MEA into a seal mold, the seal mold comprising a reservoir region, a seal bead region, and at least one runner region; feeding a flow-processable seal material into the reservoir region in the seal mold that is aligned with the throughhole in the frame; feeding the flow-processable seal material from the reservoir region to the seal bead region through the at least one runner region; wherein a hydraulic diameter of the at least one runner region is less than a hydraulic diameter of the reservoir region.
    Type: Application
    Filed: February 11, 2016
    Publication date: February 1, 2018
    Inventors: Ian STEWART, Darcy McGOWAN, Emerson GALLAGHER
  • Publication number: 20180013154
    Abstract: The invention relates to a bipolar plate (10) for a fuel cell (100), comprising—an internal coolant flow field (33), which comprises a coolant channel (43), and—a first and a second flat side (11, 12) with a first and second reactant flow field (31, 32) respectively, which has at least one first and second channel structure (41, 42) respectively, wherein—the first and the second channel structure (41, 42) each form a trunk channel (44) and branch channels (46), wherein the branch channels (46) branch off in a branching region (48) from the respective trunk channel (44), and a first intermediate region (51) is formed between the branch channels (46) of the first channel structure (31), and a second intermediate region (52) is formed between the branch channels (46) of the second channel structure (32), wherein normal projections of the first and second intermediate region (51, 52) onto a center plane (56) of the bipolar plate (10), which center plane is arranged between the two flat sides (11, 12) of the bipol
    Type: Application
    Filed: December 15, 2015
    Publication date: January 11, 2018
    Inventors: Matej KUSY, Ian STEWART, Brian DICKSON