Patents by Inventor Charif Karimi

Charif Karimi 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: 11145454
    Abstract: The invention relates to an electrical transformer (T, T?) comprising: a primary central winding (11a) extending around an axis (X) and configured to generate a central magnetic flux when a current is passed through it circulating in a first direction around the axis (X), two peripheral primary windings (12a, 13a) extending around the axis (X), between which the central primary winding (11a) is located, and configured to generate peripheral magnetic fluxes when currents are passed through same respectively circulating in a second direction around the axis (X) which is opposite to the first direction, the peripheral magnetic fluxes superimposing on the central magnetic flux, wherein the windings are further configured in such a way that the peripheral magnetic fluxes compensate the central magnetic flux in the regions located beyond the peripheral windings.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: October 12, 2021
    Assignee: SAFRAN ELECTRONICS & DEFENSE
    Inventors: Sébastien Fontaine, Daniel Sadarnac, Charif Karimi
  • Publication number: 20190385782
    Abstract: The invention relates to an electrical transformer (T, T?) comprising: a primary central winding (11a) extending around an axis (X) and configured to generate a central magnetic flux when a current is passed through it circulating in a first direction around the axis (X), two peripheral primary windings (12a, 13a) extending around the axis (X), between which the central primary winding (11a) is located, and configured to generate peripheral magnetic fluxes when currents are passed through same respectively circulating in a second direction around the axis (X) which is opposite to the first direction, the peripheral magnetic fluxes superimposing on the central magnetic flux, wherein the windings are further configured in such a way that the peripheral magnetic fluxes compensate the central magnetic flux in the regions located beyond the peripheral windings.
    Type: Application
    Filed: March 27, 2017
    Publication date: December 19, 2019
    Applicant: SAFRAN ELECTRONICS & DEFENSE
    Inventors: Sébastien FONTAINE, Daniel SADARNAC, Charif KARIMI
  • Patent number: 9197088
    Abstract: A module converting voltage between a high-voltage electrical network and at least one energy storage element an aircraft, the conversion module configured to reversibly convert between a DC voltage of the high-voltage electrical network and a DC voltage of the energy storage element, the DC voltage of the energy storage element floating relative to the DC voltage of the high-voltage electrical network and centered relative to the mass of the aircraft, the module including an input module including two filters each capable of receiving a DC voltage, a first arm and a second arm including switches, and a mechanism controlling the switches, operating per cycle of a switching period and capable of controlling at least one first switch and at least one second switch identically but offset by a half-period, whereby the first switch is open when the second switch is closed and vice versa.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: November 24, 2015
    Assignees: LABINAL POWER SYSTEMS, SAGEM DEFENSE SECURITE, MESSIER-BUGATTI-DOWTY
    Inventors: Sébastien Vieillard, Laurent Bernard Brosson, Charif Karimi, Marc Henri Yves Pontrucher
  • Publication number: 20130285615
    Abstract: A module converting voltage between a high-voltage electrical network and at least one energy storage element an aircraft, the conversion module configured to reversibly convert between a DC voltage of the high-voltage electrical network and a DC voltage of the energy storage element, the DC voltage of the energy storage element floating relative to the DC voltage of the high-voltage electrical network and centered relative to the mass of the aircraft, the module including an input module including two filters each capable of receiving a DC voltage, a first arm and a second arm including switches, and a mechanism controlling the switches, operating per cycle of a switching period and capable of controlling at least one first switch and at least one second switch identically but offset by a half-period, whereby the first switch is open when the second switch is closed and vice versa.
    Type: Application
    Filed: December 22, 2011
    Publication date: October 31, 2013
    Applicants: HISPANO-SUIZA, MESSIER-BUGATTI-DOWTY, SAGEM DEFENSE SECURITE
    Inventors: Sebastien Vieillard, Laurent Bernard Brosson, Charif Karimi, Marc Henri Yues Pontrucher