Patents by Inventor Keith Grant
Keith Grant 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: 20240118792Abstract: A method for configuring a system having a wearable optical unit is disclosed. The method includes powering on the system, and in response to the system being powered on, using one or more processors to control the system to: determine whether to cause the system to run a configuration workflow, and in response to determining to cause the system to run the configuration workflow, (a) control the system in connection with configuring an interpupillary distance (IPD) for a user of the system, (b) determine whether the IPD is configured for the user, and (c) in response to determining that the IPD is configured for the user, control the system in connection with configuring a focus of the optical unit.Type: ApplicationFiled: October 11, 2022Publication date: April 11, 2024Inventors: Trae Benjamin Stephens, Benjamin Eli Nelson Chelf, Nicholas Cory Johnson, John Aaron Boiles, Nicholas Grant Lewis, Kevin Robert McKinney, Steven David Oliver, Tun Yuen Yeung, Meghan Easley, Robin Porter, Jeremiah O'Leary, Keith Alsberg, Robert Samuel Clay
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Publication number: 20230212874Abstract: A fence with an integrated guard includes a fence having a bottom end and a guard attached to the lower end of the fence. The guard can wrap around the bottom end of the fence. Alternatively, the guard can extend downwardly from the fence. Still alternatively, the guard can extend between adjacent horizontal members of the fence.Type: ApplicationFiled: March 9, 2023Publication date: July 6, 2023Inventor: Keith Grant
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Patent number: 11149420Abstract: A splashless sink assembly includes a bottom, an open top located above the bottom, a first side wall extending upwardly from the bottom to the open top at an angle oblique relative to the bottom, and a second side wall disposed opposite the first side wall. The second side wall extends upwardly from the bottom to the open top at an angle oblique relative to the bottom.Type: GrantFiled: February 13, 2019Date of Patent: October 19, 2021Inventors: Daniel Keith Grant, Randon Brooks Bennett, Thomas Ross Alexander Nichol, Zachary Douglas Engle
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Publication number: 20180264301Abstract: An extendible firefighting nozzle and supply mechanism for use in penetrating materials and debris for fighting concealed fires in, for example, coal supply, bulk wood chip and combustible grain silo fire incidents. The system includes three primary components to deliver firefighting foam, water and/or inert gas to the fire area. The components include a distribution manifold, a sectional delivery piping extension and interchangeable spray nozzles that are tailored to the specific need. The manifold is a length of piping having handles for the operator to grip and reliably use the system, a hammer cap that allows the user to employ a sledge hammer or impact driver to assist in driving the system into the debris pile or fire area and an output end that interfaces with a nozzle of any number of extension pipes. The interface is modular and threaded using NPTM threading to allow extensions to be added or removed depending on the depth of penetration required.Type: ApplicationFiled: May 18, 2018Publication date: September 20, 2018Inventors: Keith Grant, Loren Rideout
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Patent number: 9044704Abstract: The present invention is a method of integrating oxygen production with blast furnace operation. A heated air stream is introduced to an ion transfer membrane separator, producing a permeate and a retentate. The permeate and the motive stream are introduced into an ejector jet pump producing an oxygen enriched stream. The oxygen enriched stream is introduced into blast furnace. In another embodiment of the present invention, the permeate and a steam motive stream are introduced into an ejector jet pump. Heated air inlet stream is introduced into a cascading series of ion transfer membrane separators, producing a series of permeate streams and a series of retentate streams wherein each retentate stream acts as the input stream for the subsequent ion transfer membrane separator. Thereby producing a series of oxygen enriched streams which are combined and introduced into blast furnace.Type: GrantFiled: June 21, 2012Date of Patent: June 2, 2015Assignee: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges ClaudeInventors: Bhadra S. Grover, Kenneth Kaiser, Michael Garry Keith Grant, Wei Huang
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Publication number: 20150075820Abstract: An extendible firefighting nozzle and supply mechanism for use in penetrating materials and debris for fighting concealed fires in, for example, coal supply, bulk wood chip and combustible grain silo fire incidents. The system includes three primary components to deliver firefighting foam, water and/or inert gas to the fire area. The components include a distribution manifold, a sectional delivery piping extension and interchangeable spray nozzles that are tailored to the specific need. The manifold is a length of piping having handles for the operator to grip and reliably use the system, a hammer cap that allows the user to employ a sledge hammer or impact driver to assist in driving the system into the debris pile or fire area and an output end that interfaces with a nozzle of any number of extension pipes. The interface is modular and threaded using NPTM threading to allow extensions to be added or removed depending on the depth of penetration required.Type: ApplicationFiled: June 12, 2014Publication date: March 19, 2015Inventors: Keith Grant, Loren Rideout
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Publication number: 20130341839Abstract: The present invention is a method of integrating oxygen production with blast furnace operation. A heated air stream is introduced to an ion transfer membrane separator, producing a permeate and a retentate. The permeate and the motive stream are introduced into an ejector jet pump producing an oxygen enriched stream. The oxygen enriched stream is introduced into blast furnace. In another embodiment of the present invention, the permeate and a steam motive stream are introduced into an ejector jet pump. Heated air inlet stream is introduced into a cascading series of ion transfer membrane separators, producing a series of permeate streams and a series of retentate streams wherein each retentate stream acts as the input stream for the subsequent ion transfer membrane separator. Thereby producing a series of oxygen enriched streams which are combined and introduced into blast furnace.Type: ApplicationFiled: June 21, 2012Publication date: December 26, 2013Applicant: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges ClaudeInventors: Bhadra S. Grover, Kenneth Kaiser, Michael Garry Keith Grant, Wei Huang
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Publication number: 20130344450Abstract: A method for producing a syngas stream for use in a blast furnace, including providing a hot air stream to an ion transport membrane, thereby producing a hot nitrogen rich stream and a hot oxygen rich stream, providing a methane stream to the ion transport membrane, wherein the methane reacts with the hot oxygen rich stream thereby producing a syngas containing stream, introducing the syngas containing stream into a CO2 removal unit, thereby producing a carbon dioxide rich stream, and a hydrogen rich stream, and introducing the hydrogen rich stream into a blast furnace, thereby replacing at least a portion of the natural gas fuel required therein.Type: ApplicationFiled: June 21, 2012Publication date: December 26, 2013Applicant: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges ClaudeInventors: Bhadra S. Grover, Michael Garry Keith Grant
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Patent number: 8497450Abstract: A laser-based workpiece processing system includes sensors connected to a sensor controller that converts sensor signals into focused spot motion commands for actuating a beam steering device, such as a two-axis steering mirror. The sensors may include a beam position sensor for correcting errors detected in the optical path, such as thermally-induced beam wandering in response to laser or acousto-optic modulator pointing stability, or optical mount dynamics.Type: GrantFiled: October 26, 2007Date of Patent: July 30, 2013Assignee: Electro Scientific Industries, Inc.Inventors: Kelly Bruland, Mark Unrath, Stephen Swaringen, Ho Wai Lo, Clint Vandergiessen, Keith Grant
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Patent number: 8238007Abstract: A laser-based workpiece processing system includes sensors connected to a sensor controller that converts sensor signals into focused spot motion commands for actuating a beam steering device, such as a two-axis steering mirror. The sensors may include a beam position sensor for correcting errors detected in the optical path, such as thermally-induced beam wandering in response to laser or acousto-optic modulator pointing stability, or optical mount dynamics.Type: GrantFiled: December 26, 2006Date of Patent: August 7, 2012Assignee: Electro Scientific Industries, Inc.Inventors: Kelly Bruland, Mark Unrath, Stephen Swaringen, Ho Wai Lo, Clint Vandergiessen, Keith Grant
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Patent number: 8081668Abstract: A laser processes a workpiece with laser pulses delivered at random time intervals and at substantially constant energy levels by characterizing the laser cavity discharge behavior and utilizing that information for adjusting dummy pulse time periods to compensate for the energy errors. Dummy pulses are laser pulses that are blocked from reaching a workpiece. A second way for providing constant pulse energies employs an AOM for varying amounts of laser energy passed to the workpiece. A third way of providing constant pulse energies entails extending the pulse period of selected pulses to allow additional laser cavity charging time whenever a dummy pulse is initiated.Type: GrantFiled: October 26, 2009Date of Patent: December 20, 2011Assignee: Electro Scientific Industries, Inc.Inventors: Keith Grant, Steve Stone, Brady Nilsen
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Publication number: 20100046561Abstract: A laser processes a workpiece with laser pulses delivered at random time intervals and at substantially constant energy levels by characterizing the laser cavity discharge behavior and utilizing that information for adjusting dummy pulse time periods to compensate for the energy errors. Dummy pulses are laser pulses that are blocked from reaching a workpiece. A second way for providing constant pulse energies employs an AOM for varying amounts of laser energy passed to the workpiece. A third way of providing constant pulse energies entails extending the pulse period of selected pulses to allow additional laser cavity charging time whenever a dummy pulse is initiated.Type: ApplicationFiled: October 26, 2009Publication date: February 25, 2010Applicant: Electro Scientific Industries, Inc.Inventors: Keith Grant, Steve Stone, Brady Nilsen
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Patent number: 7616669Abstract: A laser processes a workpiece with laser pulses delivered at random time intervals and at substantially constant energy levels by characterizing the laser cavity discharge behavior and utilizing that information for adjusting dummy pulse time periods to compensate for the energy errors. Dummy pulses are laser pulses that are blocked from reaching a workpiece. A second way for providing constant pulse energies employs an AOM for varying amounts of laser energy passed to the workpiece. A third way of providing constant pulse energies entails extending the pulse period of selected pulses to allow additional laser cavity charging time whenever a dummy pulse is initiated.Type: GrantFiled: November 24, 2004Date of Patent: November 10, 2009Assignee: Electro Scientific Industries, Inc.Inventors: Keith Grant, Steve Stone, Brady Nilsen
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Patent number: 7608800Abstract: A method selectively processes structures on a workpiece with laser pulses. The structures are arranged in a linear pattern having approximately equal pitch. The pulses propagate along a laser beam propagation path terminating at a laser beam spot on the workpiece. The method fires a first processing pulse when the spot coincides with a first structure location, selectively blocks or clears the propagation path during the first pulse, moves the workpiece and the spot relative to one another such that the spot moves toward a second structure location at a speed less than the product of the laser's PRF and the pitch, fires a dummy pulse before the spot reaches the second structure location, blocks the propagation path during the dummy laser pulse, fires another processing pulse when the beam spot coincides with the second structure location, and selectively blocks or clears the propagation path during the second processing pulse.Type: GrantFiled: June 5, 2007Date of Patent: October 27, 2009Assignee: Electro Scientific Industries, Inc.Inventors: Kelly Bruland, Steve Swaringen, Steve Stone, Keith Grant
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Patent number: 7423818Abstract: A method of suppressing distortion of a working laser beam directed for incidence on a target specimen presented for processing by a laser link processing system uses a spatial filter to remove stray light-induced distortion from the working laser beam.Type: GrantFiled: May 24, 2006Date of Patent: September 9, 2008Assignee: Electro Scientific Industries, Inc.Inventors: David Martin Hemenway, Brady Nilsen, Ho Wai Lo, Keith Grant
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Publication number: 20080093349Abstract: A laser-based workpiece processing system includes sensors connected to a sensor controller that converts sensor signals into focused spot motion commands for actuating a beam steering device, such as a two-axis steering mirror. The sensors may include a beam position sensor for correcting errors detected in the optical path, such as thermally-induced beam wandering in response to laser or acousto-optic modulator pointing stability, or optical mount dynamics.Type: ApplicationFiled: October 26, 2007Publication date: April 24, 2008Applicant: Electro Scientific Industries, Inc.Inventors: Kelly Bruland, Mark Unrath, Stephen Swaringen, Ho Lo, Clint Vandergiessen, Keith Grant
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Publication number: 20080017618Abstract: A laser-based workpiece processing system includes sensors connected to a sensor controller that converts sensor signals into focused spot motion commands for actuating a beam steering device, such as a two-axis steering mirror. The sensors may include a beam position sensor for correcting errors detected in the optical path, such as thermally-induced beam wandering in response to laser or acousto-optic modulator pointing stability, or optical mount dynamics.Type: ApplicationFiled: December 26, 2006Publication date: January 24, 2008Inventors: Kelly Bruland, Clint Vandergiessen, Keith Grant, Stephen Swaringen
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Publication number: 20070228024Abstract: A method selectively processes structures on a workpiece with laser pulses. The structures are arranged in a linear pattern having approximately equal pitch. The pulses propagate along a laser beam propagation path terminating at a laser beam spot on the workpiece. The method fires a first processing pulse when the spot coincides with a first structure location, selectively blocks or clears the propagation path during the first pulse, moves the workpiece and the spot relative to one another such that the spot moves toward a second structure location at a speed less than the product of the laser's PRF and the pitch, fires a dummy pulse before the spot reaches the second structure location, blocks the propagation path during the dummy laser pulse, fires another processing pulse when the beam spot coincides with the second structure location, and selectively blocks or clears the propagation path during the second processing pulse.Type: ApplicationFiled: June 5, 2007Publication date: October 4, 2007Inventors: Kelly Bruland, Steve Swaringen, Steve Stone, Keith Grant
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Patent number: 7245412Abstract: A laser-based workpiece processing system includes sensors connected to a sensor controller that converts sensor signals into focused spot motion commands for actuating a beam steering device, such as a two-axis steering mirror. The sensors may include a beam position sensor for correcting errors detected in the optical path, such as thermally-induced beam wandering in response to laser or acousto-optic modulator pointing stability, or optical mount dynamics.Type: GrantFiled: November 9, 2004Date of Patent: July 17, 2007Assignee: Electro Scientific Industries, Inc.Inventors: Kelly Bruland, Clint Vandergiessen, Keith Grant, Stephen Swaringen
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Patent number: 7227098Abstract: Methods and systems operate a machine having a laser characterized by a PRF (pulse repetition frequency) parameter that specifies a PRF at which pulses produced by the laser have desirable pulse properties for irradiating structures on or within a workpiece. The structures are arranged on the workpiece in a linear pattern having an approximately equal pitch between adjacent structures. The laser emits a laser pulse that propagates along a laser beam propagation path terminating at a laser beam spot on the workpiece. The method is effective to move the laser beam spot across the structures along the linear pattern at a speed greater than the product of the PRF and the pitch to selectively irradiate selected ones of the structures with the laser without substantially degrading the desirable pulse properties.Type: GrantFiled: August 31, 2004Date of Patent: June 5, 2007Assignee: Electro Scientific Industries, Inc.Inventors: Kelly Bruland, Steve Swaringen, Steve Stone, Keith Grant