Patents by Inventor Moustapha Hafez

Moustapha Hafez 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).

  • Publication number: 20180284891
    Abstract: A haptic interface including: a button that can be rotated by a user; an interaction element for interaction with a magneto-rheological fluid, secured to the button; a mechanism for measuring a current position of the button; a brake including a magneto-rheological fluid and a system for generating a magnetic field in the fluid; a rotary electric motor including a shaft secured in rotation to the button; a control unit generating orders for the magnetic field generating system and for the motor; and a mechanism detecting the user's intention for action on the button, the control unit controlling generation of a magnetic field and/or the motor based on the information obtained on the detection mechanism.
    Type: Application
    Filed: October 6, 2016
    Publication date: October 4, 2018
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES AL TERNATIVES
    Inventors: Laurent ECK, Moustapha HAFEZ, Romain LEJAS
  • Patent number: 10063163
    Abstract: An ultrasonic motor comprising a rotor (18) having an at least partly spherical shape and two actuators (2, 2?) each comprising an element of plate-shaped piezoelectric material comprising at least one contact edge (4, 4?) in contact with the rotor (18), said actuators (2, 2?) also comprising on one of their faces electrodes intended to bias piezoelectric materials in a bending mode and in a longitudinal mode. The contact edges (4, 4?) are concave and are formed by an arc of circle the radius of which substantially corresponds to the radius of the surface of the rotor (18), said arcs of circle angularly extending at a determined angle such that the bending mode and the longitudinal mode in which the piezoelectric material is biased are at the same frequency.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: August 28, 2018
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Edouard Leroy, Moustapha Hafez, José Lozada
  • Publication number: 20180231093
    Abstract: A device for a rotary haptic interface including: a rotary button and an interaction member interacting with a magnetorheological fluid, the rotary button and interaction member being secured to a shaft for rotation therewith, a chamber defined by walls and containing the fluid and the interaction element, and a mechanism generating a variable magnetic field. The element for interaction with the fluid includes a skirt surrounding the shaft, the skirt being secured to a longitudinal end of the shaft opposite the end to which the rotary button is secured, and extending from the first end towards the rotary button. The shaft passes through a single wall of the chamber and a sealing mechanism is arranged between the shaft and the wall. A mechanism for guiding the rotation of the shaft is arranged around the shaft between the sealing mechanism and the rotary button.
    Type: Application
    Filed: September 29, 2015
    Publication date: August 16, 2018
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Moustapha HAFEZ, Gwenael CHANGEON, Jose LOZADA, Laurent ECK
  • Patent number: 10001864
    Abstract: A method and a device for locating an interaction on a surface of large size to render it touch-sensitive are provided. The method is based on a modeling of the distributions of loads between capacitive sensors distributed over the surface and an estimation of the position closest to the interaction, by searching for a minimum cost associated with the proximity of the sensor measurements with established models.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: June 19, 2018
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Nicolas Guenard, Christian Bolzmacher, Moustapha Hafez
  • Patent number: 9898032
    Abstract: A haptic interface, including: a button which can be rotated by a user; an interaction element interacting with a magnetorheological fluid, secured to the button; a mechanism measuring a current position of the button; a brake including a magnetorheological fluid and a generation system to generate a magnetic field in the fluid; a controller configured to generate orders for the system to generate a magnetic fluid to modify a value of the magnetic field; and a mechanism to detect torque exerted by a user on the button to know direction of the torque and whether the torque is greater than a given value for a given direction, the controller controlling generation of a magnetic field based on obtained information about the torque at least when the button indicates zero or low speed.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: February 20, 2018
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Moustapha Hafez, Jose Lozada, Laurent Eck, Gwenael Changeon
  • Publication number: 20170269692
    Abstract: A method for generating haptic sensations from a haptic interface including: a rotatable button; an element for interacting with a fluid with a viscosity that varies as a function of an exterior stimulus, the element for interacting with the fluid moving with the button; a fluid with an apparent viscosity that varies as a function of a magnetic field and that surrounds the element for interacting with the fluid; and a system for generating a magnetic field on command in the fluid. The method includes: evaluating a current position of the button; determining a direction of rotation of the button; altering the value of the current position when the current position is in a haptic stop zone and the direction of rotation of the button is associated with the haptic stop, and as long as the direction of rotation of the button is not modified.
    Type: Application
    Filed: November 30, 2015
    Publication date: September 21, 2017
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Laurent ECK, Moustapha HAFEZ
  • Publication number: 20170227980
    Abstract: A haptic interface, including: a button which can be rotated by a user; an interaction element interacting with a magnetorheological fluid, secured to the button; a mechanism measuring a current position of the button; a brake including a magnetorheological fluid and a generation system to generate a magnetic field in the fluid; a controller configured to generate orders for the system to generate a magnetic fluid to modify a value of the magnetic field; and a mechanism to detect torque exerted by a user on the button to know direction of the torque and whether the torque is greater than a given value for a given direction, the controller controlling generation of a magnetic field based on obtained information about the torque at least when the button indicates zero or low speed.
    Type: Application
    Filed: September 29, 2015
    Publication date: August 10, 2017
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Moustapha HAFEZ, Jose LOZADA, Laurent ECK, Gwenael CHANGEON
  • Publication number: 20170192577
    Abstract: A device for holding a touch-sensitive surface in a frame comprises deformable means arranged between the upper rim of the frame and the upper face of the surface, and capacitive means arranged between the lower rim of the frame and the opposite face of the surface to detect a displacement of the surface. The deformable means and the capacitive means are arranged on the perimeter of the frame so as to hold the surface in the frame.
    Type: Application
    Filed: June 9, 2015
    Publication date: July 6, 2017
    Inventors: Nicolas GUENARD, Christian BOLZMACHER, Moustapha HAFEZ
  • Publication number: 20170123549
    Abstract: A method and a device for locating an interaction on a surface of large size to render it touch-sensitive are provided. The method is based on a modeling of the distributions of loads between capacitive sensors distributed over the surface and an estimation of the position closest to the interaction, by searching for a minimum cost associated with the proximity of the sensor measurements with established models.
    Type: Application
    Filed: June 9, 2015
    Publication date: May 4, 2017
    Inventors: Nicolas GUENARD, Christian BOLZMACHER, Moustapha HAFEZ
  • Patent number: 9285841
    Abstract: A display device including a deformable surface, including: plural actuators including mobile elements that can be moved to deform the deformable surface, the mobile elements being distributed in a space occupied by the deformable surface; a set of position sensors for sensing the position of at least one touch, and distributed in the space occupied by the deformable surface; and an elastic flexible membrane placed against the mobile elements, extending through the space occupied by the deformable surface and configured to accompany deformation of the deformable surface. The set of sensors is secured to the elastic flexible membrane and distributed in a regular manner in the space occupied by the deformable surface in an array of electricity conductors configured to accompany deformations of the elastic flexible membrane.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: March 15, 2016
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Christian Bolzmacher, Fabien Ferlay, Moustapha Hafez, Florian Periquet
  • Publication number: 20150162853
    Abstract: An ultrasonic motor comprising a rotor (18) having an at least partly spherical shape and two actuators (2, 2?) each comprising an element of plate-shaped piezoelectric material comprising at least one contact edge (4, 4?) in contact with the rotor (18), said actuators (2, 2?) also comprising on one of their faces electrodes intended to bias piezoelectric materials in a bending mode and in a longitudinal mode. The contact edges (4, 4?) are concave and are formed by an arc of circle the radius of which substantially corresponds to the radius of the surface of the rotor (18), said arcs of circle angularly extending at a determined angle such that the bending mode and the longitudinal mode in which the piezoelectric material is biased are at the same frequency.
    Type: Application
    Filed: June 13, 2013
    Publication date: June 11, 2015
    Inventors: Edouard Leroy, Moustapha Hafez, José Lozada
  • Publication number: 20150153179
    Abstract: This touch-sensitive navigation aid device (10) intended to be worn by a user, comprises: a touch-sensitive interface (12) having a touch-sensitive contact surface (20), a plurality of actuators (30) integrated in the touch-sensitive interface (12) and suitable for moving inside the touch-sensitive contact surface (20) so as to render same deformable, and means (14) for holding the touch-sensitive interface (12) in contact with the user's body designed so that, in the position for holding the touch-sensitive interface (12) in contact with a part of the user's body, the deformable touch-sensitive contact surface (20) is in contact with at least one portion of this part of the body for touch-sensitive stimulation of this portion using the actuators (30), Furthermore, the movable actuators (30) are arranged according to a two-dimensional arrangement in the deformable touch-sensitive contact surface (20).
    Type: Application
    Filed: July 4, 2013
    Publication date: June 4, 2015
    Applicant: Commissariat a I'energie atomique et aux ene alt
    Inventors: Christian Bolzmacher, Margarita Anastassova, Moustapha Hafez, Saranya Sivacoumarane
  • Patent number: 8913039
    Abstract: This method for locating at least one touch on a touch-sensitive surface of an object comprises the following steps: monitoring (100) of at least one touch by propagating (102), in the touch-sensitive surface of the object, elastic mechanical waves from at least one transmitting point of the object, and by detecting (104) said elastic mechanical waves in at least one reception point of the object, in order to obtain at least one sensed signal, and locating (200) at least one touch on the touch-sensitive surface of the object by comparing certain spectral characteristics of the sensed signal to a set of reference characteristics. The monitoring step (100) comprises measuring (104, 106) the sensed signal during a time interval (t3) starting during a transient phase of the propagation of the transmitted waves, for supplying, to said at least one reception point, information on radiation interfered with by said at least one touch.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: December 16, 2014
    Assignees: Commissariat a l'energie atomique et aux energies alternatives, Centre National de la Recherche Scientifique
    Inventors: Jean-Pierre Nikolovski, Moustapha Hafez, Yuan Liu, Nazih Mechbal, Michel Verge
  • Patent number: 8878657
    Abstract: An haptic interface including a knob manipulated by a user, a rotation shaft with a longitudinal axis to which the knob is fixed in rotation, an interaction element with a magneto-rheological fluid in rotation with the shaft, the fluid, a system for generating a magnetic field in the fluid, and a control unit capable of generating orders to the system for generating the magnetic field to modify the magnetic field. The system includes a coil type mechanism generating a variable magnetic field, and a permanent magnet type mechanism generating a permanent magnetic field.
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: November 4, 2014
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventors: Florian Periquet, Samuel Roselier, Jose Lozada, Moustapha Hafez
  • Publication number: 20140184947
    Abstract: A display device including a deformable surface, including: plural actuators including mobile elements that can be moved to deform the deformable surface, the mobile elements being distributed in a space occupied by the deformable surface; a set of position sensors for sensing the position of at least one touch, and distributed in the space occupied by the deformable surface; and an elastic flexible membrane placed against the mobile elements, extending through the space occupied by the deformable surface and configured to accompany deformation of the deformable surface. The set of sensors is secured to the elastic flexible membrane and distributed in a regular manner in the space occupied by the deformable surface in an array of electricity conductors configured to accompany deformations of the elastic flexible membrane.
    Type: Application
    Filed: May 24, 2012
    Publication date: July 3, 2014
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENE ALT
    Inventors: Christian Bolzmacher, Fabien Ferlay, Moustapha Hafez, Florian Periquet
  • Publication number: 20140104047
    Abstract: A tactile display device including: a touch screen including ferromagnetic particles; a plurality of actuators including magnet elements distributed against the touch screen; a mechanism for activating each actuator to generate a local magnetic field in the touch screen; and an elastic membrane formed in an elastomer flexible solid material, the elastomer material including the ferromagnetic particles.
    Type: Application
    Filed: May 24, 2012
    Publication date: April 17, 2014
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENE ALT
    Inventors: Christian Bolzmacher, Moustapha Hafez
  • Patent number: 8619251
    Abstract: A device for measuring the position of at least one moving object in a three-dimensional grid. The device comprises: at least one optical head comprising an independent laser sources array outputting collimated laser beams, arranged about a central photodetector with a single sensitive cell; at least one movable base with two rotational degrees of freedom whereto said array is secured; and control electronics.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: December 31, 2013
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventors: Florent Souvestre, Moustapha Hafez
  • Patent number: 8547191
    Abstract: Damping device to impose a reaction to the displacement of a manual operating device (28), said device comprising at least one chamber containing the magneto-rheological fluid, one or two means of generating a variable magnetic field (6.1, 6.2) in the magneto-rheological fluid so as to modify its apparent viscosity, one element (4) free to move in translation capable of shearing the magneto-rheological fluid and designed to be mechanically connected to the manual operating device (28), said mobile element (4) comprising a blade with a longitudinal axis (Y) comprising holes and/or recesses and/or projections.
    Type: Grant
    Filed: October 13, 2008
    Date of Patent: October 1, 2013
    Assignees: Commissariat a l'Energie Atomique et aux Energies Alternatives, Centre National de la Recherche Scientifique
    Inventors: Xavier Boutillon, Moustapha Hafez, Jose Lozada
  • Patent number: 8493190
    Abstract: A haptic interface including an element that interacts with a user; a rotation shaft with a longitudinal axis to which the user interaction element is fixed in rotation; a fluid interaction element, the fluid interaction element being fixed in rotation to the shaft, the fluid being of magneto-rheological type, a system generating magnetic field in the fluid; and a control unit capable of generating orders to magnetic field generation system so as to modify the magnetic field. The interaction element includes a cylindrical wall of revolution with a longitudinal axis, including through openings and/or patterns in relief.
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: July 23, 2013
    Assignee: Commissariat a l'energie atomique et aux energies alternatives
    Inventors: Florian Periquet, Samuel Roselier, Jose Lozada, Moustapha Hafez
  • Patent number: 8228298
    Abstract: Method of transmitting tactile information to a tactile display with a touch plate containing pads, the touch plate being controlled by a server, in which, (a) tactile information is defined as being a sequence of a predefined number of images together forming a pattern, each image having a rank in the pattern, each pattern being defined by: a design of successive images a duration for each image, a duration between consecutive images, a duration between consecutive patterns; (b) said word is transmitted to a tactile display server, preceded by a beacon indicating that data following the beacon must be directed to the touch plate control server; (c) a series of instructions is activated when the server receives the word, this series having a start address that depends on said word, said series of instructions being used to display the successive images together forming the pattern corresponding to the word to be displayed, said series of instructions being repeated to display the same pattern a predefin
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: July 24, 2012
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Mohamed Benali-Khoudja, Moustapha Hafez