Patents by Inventor David Fouche

David Fouche 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: 11500158
    Abstract: Arrays of fiber pigtails can be used to project and receive light. Unfortunately, most fiber pigtail arrays are not aligned well enough for coherently combining different optical beams. This imprecision stems in part from misalignment between the optical fiber and the endcap spliced to the end of the optical fiber. The endcap is often polished, curved, or patterned, causing the light emitted by the endcapped fiber to refract or diffract as it exits the endcap. This refraction or diffraction shifts the apparent position of the beam waist from its actual position. Measuring this virtual beam waist position before and after splicing the endcap to the fiber increases the absolute precision with which the fiber is aligned to the endcap. This increase in absolute precision reduces the deviation in virtual beam waist position among endcapped fibers, making it easier to produce arrays of endcapped fibers aligned precisely enough for coherent beam combining.
    Type: Grant
    Filed: January 13, 2020
    Date of Patent: November 15, 2022
    Assignee: Massachusetts Institute of Technology
    Inventors: Jason E. Langseth, Christopher Hwang, William Nowak, Daniel Miller, David Fouche, Joshua Olitzky
  • Publication number: 20200292756
    Abstract: Arrays of fiber pigtails can be used to project and receive light. Unfortunately, most fiber pigtail arrays are not aligned well enough for coherently combining different optical beams. This imprecision stems in part from misalignment between the optical fiber and the endcap spliced to the end of the optical fiber. The endcap is often polished, curved, or patterned, causing the light emitted by the endcapped fiber to refract or diffract as it exits the endcap. This refraction or diffraction shifts the apparent position of the beam waist from its actual position. Measuring this virtual beam waist position before and after splicing the endcap to the fiber increases the absolute precision with which the fiber is aligned to the endcap. This increase in absolute precision reduces the deviation in virtual beam waist position among endcapped fibers, making it easier to produce arrays of endcapped fibers aligned precisely enough for coherent beam combining.
    Type: Application
    Filed: January 13, 2020
    Publication date: September 17, 2020
    Inventors: Jason E. Langseth, Christopher Hwang, William Nowak, Daniel Miller, David Fouche, Joshua Olitzky
  • Patent number: 9822909
    Abstract: The invention concerns a ring (4) for fastening a pipe (1) to a tubular body (2). According to the invention, the ring comprises two rigid sectors (5) that are coupled to each other by at least one elastically deformable annular portion (12), the two sectors and the portion being a single part, each sector (5) having an inner face (6), protruding from which at least one anchoring stud (7) extends radially, intended to be received in a housing correspondingly provided in a wall of the pipe, each anchoring stud (7) comprising two grooves (9) extending circumferentially to either side of said anchoring stud. The invention also concerns connection means comprising such a ring.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: November 21, 2017
    Assignee: PARKER HANNIFIN MANUFACTURING FRANCE SAS
    Inventors: Alain Gaillard, Jean-Noel Musellec, Yoann Averty, David Fouche, Cyril Leroyer
  • Publication number: 20170049967
    Abstract: Devices, systems and methods for needle free injection include a multi-use needle-free injection device comprising reversibly connected proximate and distal sections, wherein the proximate section comprises a power supply, actuator, circuitry and a housing, and the distal section comprises a disposable nozzle tip prefilled with an injectate, a chemical energetic device, and a dual seal piston barrier between the energetic device and the injectate, wherein the proximate and distal sections and their components are operably linked and configured for single-hand injecting of the injectate.
    Type: Application
    Filed: November 4, 2016
    Publication date: February 23, 2017
    Inventors: David Fouche, Michael Vestel, John P. Marlow, Mark A. Petrie, Robert A. Brown, Hilary Lackritz, Richard A. Hill, Donald English, Mark Nansen, Mark Hansen, Martin Martoza
  • Publication number: 20160348813
    Abstract: The invention concerns a ring (4) for fastening a pipe (1) to a tubular body (2). According to the invention, the ring comprises two rigid sectors (5) that are coupled to each other by at least one elastically deformable annular portion (12), the two sectors and the portion being a single part, each sector (5) having an inner face (6), protruding from which at least one anchoring stud (7) extends radially, intended to be received in a housing correspondingly provided in a wall of the pipe, each anchoring stud (7) comprising two grooves (9) extending circumferentially to either side of said anchoring stud. The invention also concerns connection means comprising such a ring.
    Type: Application
    Filed: January 28, 2015
    Publication date: December 1, 2016
    Inventors: Alain Gaillard, Jean-Noel Musellec, Yoann Averty, David Fouche, Cyril Leroyer
  • Publication number: 20040236754
    Abstract: A method of maintaining a bidirectional link between data in a file checked-out from a content management system to a user computer and data in at least one file maintained at the content management system is provided. In the method, a first file is scanned at least when it is one of checked in and checked out of the document management system to locate a link in the file. Information is gathered from the first file regarding a source and target of the link. It is determined if an element in the file is the source or the target. The information is the stored in a database. The information in the database is automatically updated when a second file is corresponding to the other end of the link is checked in to the document management system to reflect changes made to the end of the link in the second file. The changes are applied to the information in the first file.
    Type: Application
    Filed: May 21, 2003
    Publication date: November 25, 2004
    Applicant: Bentley Systems, Inc.
    Inventors: Brad Workman, David Fouche, Jim Barr, Shaun Sewall, Tom Chmielenski, George Dulchinos