Patents by Inventor David Todd

David Todd 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: 10456715
    Abstract: A seal arrangement for joining a first component to a second component is disclosed. The seal arrangement may have a first sealing surface formed as an integral portion of the first component, and a second sealing surface formed as an integral portion of the second component and configured to directly engage the first sealing surface. The seal arrangement may also have an energizer engaged with the first sealing surface and configured to inhibit movement of the first sealing surface away from the second sealing surface during a temperature drop.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: October 29, 2019
    Assignee: Caterpillar Inc.
    Inventors: Daniel Raymond Baldwin, David Todd Montgomery
  • Patent number: 10264339
    Abstract: A wearable haptic device is provided. The wearable haptic device includes a band having at least one haptic device attached to the band. A power source is operatively connected to the vibration device. The vibration device may further include an input configured to connect to a music playing device. The vibration device produces a vibration based on the output of the music playing device.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: April 16, 2019
    Inventor: David Todd Schwartz
  • Patent number: 10253648
    Abstract: The present disclosure is directed to a variable area turbine nozzle. The variable area turbine nozzle includes a first vane segment, a second vane segment arranged with the first vane segment, and a trailing edge segment arranged with the first and second vane segments. The vane also includes a first actuating system for pivoting the second vane segment with respect to the first vane segment and a second actuating system for pivoting the trailing edge with respect to the first and second vane segments.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: April 9, 2019
    Assignee: General Electric Company
    Inventors: David Todd Bentley, Christopher Ryan Johnson, Brandon Flowers Powell
  • Patent number: 10175200
    Abstract: Methods of detecting non-uniformities in a material are described. Such methods can comprise inducing changes in strain state or changing the magnetic moment of a material and measuring magnetic flux leakage that is synchronous with the changes in strain state or magnetic moment, while simultaneously applying an external magnetic field to control the relative magnitude of the magnetic flux leakage.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: January 8, 2019
    Assignee: Prime Photonics, LC
    Inventors: Clark Davis Boyd, David Todd Gray, Jonathan Drapala Sides
  • Patent number: 10137582
    Abstract: A pivot motor has a stator and an armature. The armature has an assembly of two spaced permanent magnets and a triangular flux bridge on one end. Magnetic flux is generated by passing alternating current through an electrical coil in the stator. The flux flows through the permanent magnets to generate electromotive force that vibrates the armature. The triangular flux bridge adjacent the magnets facilitates the flux flow, increasing motor power under typical load conditions and motor efficiency.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: November 27, 2018
    Assignee: Wahl Clipper Corporation
    Inventor: David Todd
  • Publication number: 20180283315
    Abstract: A combustion system for an internal combustion engine includes a cylinder having a cylinder wall defining a bore, a piston disposed inside the bore, a combustion chamber delimited by a cylinder head, the cylinder wall, and the piston. The piston includes a piston bowl defining a floor portion, and at least one scooped recess extending radially outwardly from a periphery of the piston bowl. The internal combustion engine further includes a fuel injector configured to inject fuel into the combustion chamber as a plurality of fuel jets at a main injection timing such that each fuel jet contacts the floor portion of the piston bowl and follows a profile of the piston bowl and enter the at least one scooped recess. Furthermore, at least one of the plurality of is deflected by the at least one scooped recess away from the cylinder wall.
    Type: Application
    Filed: March 31, 2017
    Publication date: October 4, 2018
    Applicant: Caterpillar Inc.
    Inventors: Bobby John, Jonathan W. Anders, David Todd Montgomery, Kenth I. Svensson
  • Publication number: 20180277695
    Abstract: The present disclosure relates to a composition that includes a perovskite crystal having a ferroelectric domain aligned substantially parallel to a reference axis. In some embodiments of the present disclosure, the perovskite crystal may include ABX3, where A is a first cation, B is a second cation, and X is an anion. In some embodiments of the present disclosure, A may include an alkyl ammonium cation. In some embodiments of the present disclosure, B may include a metal element. In some embodiments of the present disclosure, the metal element may include lead. In some embodiments of the present disclosure, X may include a halogen. In some embodiments of the present disclosure, the perovskite crystal may include methylammonium lead iodide.
    Type: Application
    Filed: March 23, 2018
    Publication date: September 27, 2018
    Inventors: Lauren Marie Garten, David Todd Moore, David Samuel Ginley, Brian Patrick Gorman
  • Publication number: 20180141224
    Abstract: A pivot motor has a stator and an armature. The armature has an assembly of two spaced permanent magnets and a triangular flux bridge on one end. Magnetic flux is generated by passing alternating current through an electrical coil in the stator. The flux flows through the permanent magnets to generate electromotive force that vibrates the armature. The triangular flux bridge adjacent the magnets facilitates the flux flow, increasing motor power under typical load conditions and motor efficiency.
    Type: Application
    Filed: November 18, 2016
    Publication date: May 24, 2018
    Inventor: David Todd
  • Publication number: 20180021703
    Abstract: A seal arrangement for joining a first component to a second component is disclosed. The seal arrangement may have a first sealing surface formed as an integral portion of the first component, and a second sealing surface formed as an integral portion of the second component and configured to directly engage the first sealing surface. The seal arrangement may also have an energizer engaged with the first sealing surface and configured to inhibit movement of the first sealing surface away from the second sealing surface during a temperature drop.
    Type: Application
    Filed: July 25, 2016
    Publication date: January 25, 2018
    Applicant: Caterpillar Inc.
    Inventors: Daniel Raymond BALDWIN, David Todd MONTGOMERY
  • Publication number: 20170316433
    Abstract: A global identity for a user is established and aggregated or federated for various personas of the user across transaction data for multiple lines-of business (LOB). Integration services provide features for integrating cross-LOB transactions, reporting, transacting, and/or metrics generation based on the global identity.
    Type: Application
    Filed: April 29, 2016
    Publication date: November 2, 2017
    Inventors: Nagendra Kumar Revanur, Yehoshua Zvi Licht, David Todd Slaughter
  • Patent number: 9793829
    Abstract: Provided is a magneto-thermoelectric generator (MTG) device for energy harvesting and more particularly a device for converting waste thermal heat from a photovoltaic cell into mechanical energy and ultimately into electrical energy. Embodiments operate on the principle of thermally-induced switching between open and closed states of a ferromagnetic switch to generate mechanical oscillations that cause strain in a piezoelectric material, resulting in the generation of electrical energy. A structure capable of providing a non-linear restoring force provides mechanical energy to the device, which is a significant improvement over prior art MTG devices employing a linear spring restorative force. The device is also provided as a hybrid photovoltaic (PV)/MTG energy harvester for scavenging heat from photovoltaic cells. The hybrid PV/MTG device is particularly useful for harvesting waste heat to boost power generation, extend flight duration, and provide thermal management aboard HALE platforms.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: October 17, 2017
    Assignee: Prime Photonics, LC
    Inventors: David Todd Gray, John Moore Coggin
  • Publication number: 20170254215
    Abstract: The present disclosure is directed to a variable area turbine nozzle. The variable area turbine nozzle includes a first vane segment, a second vane segment arranged with the first vane segment, and a trailing edge segment arranged with the first and second vane segments. The vane also includes a first actuating system for pivoting the second vane segment with respect to the first vane segment and a second actuating system for pivoting the trailing edge with respect to the first and second vane segments.
    Type: Application
    Filed: March 4, 2016
    Publication date: September 7, 2017
    Inventors: David Todd Bentley, Christopher Ryan Johnson, Brandon Flowers Powell
  • Patent number: 9754926
    Abstract: An electronic device may include a packaging substrate having a packaging substrate face with a plurality of electrically conductive pads on the packaging substrate face. A first light emitting diode die may bridge first and second ones of the electrically conductive pads. More particularly, the first light emitting diode die may include first anode and cathode contacts respectively coupled to the first and second electrically conductive pads using metallic bonds. Moreover, widths of the metallic bonds between the first anode contact and the first pad and between the first cathode contact and the second pad may be at least 60 percent of a width of the first light emitting diode die. A second light emitting diode die may bridge third and fourth ones of the electrically conductive pads. The second light emitting diode die may include second anode and cathode contacts respectively coupled to the third and fourth electrically conductive pads using metallic bonds.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: September 5, 2017
    Assignee: CREE, INC.
    Inventors: Matthew Donofrio, John Adam Edmond, Hua-Shuang Kong, Peter S. Andrews, David Todd Emerson
  • Publication number: 20170229431
    Abstract: An LED wafer includes LED dies on an LED substrate. The LED wafer and a carrier wafer are joined. The LED wafer that is joined to the carrier wafer is shaped. Wavelength conversion material is applied to the LED wafer that is shaped. Singulation is performed to provide LED dies that are joined to a carrier die. The singulated devices may be mounted in an LED fixture to provide high light output per unit area.
    Type: Application
    Filed: April 27, 2017
    Publication date: August 10, 2017
    Inventors: Michael John Bergmann, David Todd Emerson, Joseph G. Clark, Christopher P. Hussell
  • Patent number: 9722158
    Abstract: A multiple element emitter package is disclosed for increasing color fidelity and heat dissipation, improving current control, and increasing rigidity of the package assembly. In one embodiment, the package comprises a casing with a cavity extending into the interior of the casing from a first main surface. A lead frame is at least partially encased by the casing, the lead frame comprising a plurality of electrically conductive parts carrying a linear array of LEDs. Electrically conductive parts, separate from the parts carrying the LEDs, have a connection pad, wherein the LEDs are electrically coupled to the connection pad, such as by a wire bond. This arrangement allows for a respective electrical signal to be applied to each of the LEDs. The emitter package may be substantially waterproof, and an array of the emitter packages may be used in an LED display such as an indoor and/or outdoor LED screen.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: August 1, 2017
    Assignee: CREE HUIZHOU SOLID STATE LIGHTING COMPANY LIMITED
    Inventors: Alex Chi Keung Chan, Yue Kwong Victor Lau, Xuan Wang, David Todd Emerson
  • Patent number: 9714624
    Abstract: An engine system is disclosed. The engine system may have an engine including at least one cylinder. Further, the engine system may have a nozzle configured to selectively inject gaseous fuel into the at least one cylinder of the engine. The engine system may also have an intake port configured to direct air for combustion to the at least one cylinder. In addition, the engine system may have exhaust valves associated with the at least one cylinder. The exhaust valves may be configured to direct exhaust from the cylinder to an atmosphere. The exhaust valves may also be configured to close at different times.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: July 25, 2017
    Assignee: Electro-Motive Diesel, Inc.
    Inventors: Deep Bandyopadhyay, John P. Timmons, David Todd Montgomery, Aaron Gamache Foege
  • Patent number: RE46589
    Abstract: The present invention is a semiconductor structure for light emitting devices that can emit in the red to ultraviolet portion of the electromagnetic spectrum. The structure includes a first n-type cladding layer of AlxInyGa1?x?yN, where 0?x?1 and 0?y<1 and (x+y)?1; a second n-type cladding layer of AlxInyGa1?x?yN, where 0?x?1 and 0?y<1 and (x+y)?1, wherein the second n-type cladding layer is further characterized by the substantial absence of magnesium; an active portion between the first and second cladding layers in the form of a multiple quantum well having a plurality of InxGa1?xN well layers where 0<x<1 separated by a corresponding plurality of AlxInyGa1?x?yN barrier layers where 0?x?1 and 0?y?1; a p-type layer of a Group III nitride, wherein the second n-type cladding layer is positioned between the p-type layer and the multiple quantum well; and wherein the first and second n-type cladding layers have respective bandgaps that are each larger than the bandgap of the well layers.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: October 24, 2017
    Assignee: Cree, Inc.
    Inventors: John Adam Edmond, Kathleen Marie Doverspike, Hua-shuang Kong, Michael John Bergmann, David Todd Emerson
  • Patent number: D832865
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: November 6, 2018
    Assignee: Inspire Medical Systems, Inc.
    Inventors: David Todd Dieken, Maria Isabel Ancona, John Rondoni
  • Patent number: D833461
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: November 13, 2018
    Assignee: Inspire Medical Systems, Inc.
    Inventors: David Todd Dieken, Maria Isabel Ancona, John Rondoni
  • Patent number: D840426
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: February 12, 2019
    Assignee: Inspire Medical Systems, Inc.
    Inventors: David Todd Dieken, Maria Isabel Ancona, John Rondoni