Patents Assigned to MITIS
  • Patent number: 12285830
    Abstract: Spindle for carrying out machining assisted by non-ultrasonic axial oscillations, including a tool-bearing shaft, and an exciting portion, for subjecting the shaft to non-ultrasonic axial oscillations, especially during its rotation. The exciting portion including a first exciting stage, having at least one piezoelectric actuator, and a second exciting stage, having at least one piezoelectric actuator, having a non-zero axial overlap with the first exciting stage, the actuators of the two stages being arranged so that their effects add.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: April 29, 2025
    Assignee: MITIS
    Inventor: Sylvain Laporte
  • Patent number: 11994296
    Abstract: A combustion device for an electricity production or energy cogeneration apparatus, the apparatus comprising a gas turbine supplied by the device, the device being suitable for a combustion regime of a “flameless” type, the device including: an outer tube; and a combustion tube forming a combustion zone for flameless combustion of a mixture of oxidizing air and fuel, the combustion tube being concentric with the outer tube, in communication with fuel-injection means, and with air-injection means arranged at a first end of the combustion tube, referred to as a front end, and which is closed by an end wall at a second end of the combustion tube, referred to as a rear end, the end wall being secured to the combustion tube and fluidtight, the fuel-injection means including at least a first orifice, referred to as a fuel-injection orifice, the air-injection means including at least a second orifice.
    Type: Grant
    Filed: September 13, 2021
    Date of Patent: May 28, 2024
    Assignees: MITIS S.A., UNIVERSITE LIBRE DE BRUXELLES
    Inventors: Michel Delanaye, Alessandro Parente
  • Patent number: 9808898
    Abstract: The present invention concerns a sealing system for a tool holder of a fluid-assisted axial machining or milling machine, including:—at least first and second seals contributing to define a space for the flow of fluid to at least one inner channel of the tool, one of the seals being applied to the tool or an optional adapter carrying the tool and the other seal a) being applied to the tool or to the adapter carrying the tool or b) being applied to a surface spaced apart from the tool and rotating with same, with 0.3?Do/Djmax for Do in the interval [1; 3] in mm and 0.5?Do/Djmax for Do in the interval [3; 20] in mm, where Do is the diameter of the tool facing this other seal and Djmax is the internal diameter of this seal.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: November 7, 2017
    Assignee: MITIS
    Inventor: Sylvain Laporte
  • Patent number: 9776254
    Abstract: A machining method for at least one shaping machining operation can include carrying out a machining operation over a first distance using a cutting tool which is subjected to axial oscillations as it moves forward, then reducing the amplitude of the axial oscillations while continuing to drive the cutting tool in terms of rotation.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: October 3, 2017
    Assignee: MITIS
    Inventor: Sylvain Laporte
  • Patent number: 9156116
    Abstract: The present invention provides an axial machining device comprising a tool-carrier spindle rotatable in a housing, the housing housing a transmission system causing the spindle to advance automatically relative to the housing under the effect of the tool-carrier spindle being driven in rotation, the transmission system including an advance gearwheel screwed onto the spindle, the device including a resilient return member urging the advance gearwheel in a first axial direction opposite to the advance direction of the spindle, and also including a first rolling bearing having rolling members rolling on an undulating raceway having an axial component, thereby periodically urging the advance gearwheel to move in a second direction opposite to the first, such that rotation of the spindle is accompanied by axial vibratory motion.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: October 13, 2015
    Assignee: MITIS
    Inventor: Gregoire Peigne
  • Publication number: 20150003928
    Abstract: A machining method for at least one shaping machining operation can include carrying out a machining operation over a first distance using a cutting tool which is subjected to axial oscillations as it moves forward, then reducing the amplitude of the axial oscillations while continuing to drive the cutting tool in terms of rotation
    Type: Application
    Filed: December 11, 2012
    Publication date: January 1, 2015
    Applicant: MITIS
    Inventor: Sylvain Laporte
  • Publication number: 20130051946
    Abstract: The present invention provides an axial machining device comprising a tool-carrier spindle rotatable in a housing, the housing housing a transmission system causing the spindle to advance automatically relative to the housing under the effect of the tool-carrier spindle being driven in rotation, the transmission system including an advance gearwheel screwed onto the spindle, the device including a resilient return member urging the advance gearwheel in a first axial direction opposite to the advance direction of the spindle, and also including a first rolling bearing having rolling members rolling on an undulating raceway having an axial component, thereby periodically urging the advance gearwheel to move in a second direction opposite to the first, such that rotation of the spindle is accompanied by axial vibratory motion.
    Type: Application
    Filed: November 16, 2010
    Publication date: February 28, 2013
    Applicant: MITIS
    Inventor: Grégoire Peigne