Patents Assigned to Tekna
  • Patent number: 10688564
    Abstract: The present disclosure relates to a process and an apparatus for producing powder particles by atomization of a feed material in the form of an elongated member such as a wire, a rod or a filled tube. The feed material is introduced in a plasma torch. A forward portion of the feed material is moved from the plasma torch into an atomization nozzle of the plasma torch. A forward end of the feed material is surface melted by exposure to one or more plasma jets formed in the atomization nozzle. The one or more plasma jets being includes an annular plasma jet, a plurality of converging plasma jets, or a combination of an annular plasma jet with a plurality of converging plasma jets. Powder particles obtained using the process and apparatus are also described.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: June 23, 2020
    Assignee: TEKNA PLASMA SYSTEMS INC.
    Inventors: Maher I. Boulos, Jerzy W. Jurewicz, Alexandre Auger
  • Publication number: 20200171580
    Abstract: The present disclosure relates to a, process and an apparatus for producing powder particles by atomization of a feed material in the form of an elongated member such as a wire, a rod or a filled tube. The feed material is introduced in a plasma torch. A forward portion of the feed material is moved from the plasma torch into an atomization nozzle of the plasma torch. A forward end of the feed material is surface melted by exposure to one or more plasma jets formed in the atomization nozzle. The one or more plasma jets being includes an annular plasma jet, a plurality of converging plasma jets, or a combination of an annular plasma jet with a plurality of converging plasma jets. Powder particles obtained using the process and apparatus are also described.
    Type: Application
    Filed: February 7, 2020
    Publication date: June 4, 2020
    Applicant: TEKNA PLASMA SYSTEMS INC.
    Inventors: Maher I. Boulos, Jerzy W. Jurewicz, Alexandre Auger
  • Publication number: 20200047569
    Abstract: An apparatus for detecting and checking defects on a tire at the end of a production process, the apparatus comprising a workstation comprising a workbench comprising a rotating table for supporting a tire; a profilometer; a high-resolution color linear camera for scanning outer surfaces of tire tread and tire shoulders; mechanical supports for the profilometer and color linear camera; a data processor for for storing and processing data detected by the profilometer and the color linear camera means, for providing a three-dimensional model of a tire, and for management of a database including parameters referring to surface characteristics of defect-free tires; an interface for facilitating interaction between an operator and the apparatus; wherein the profilometer and the color linear camera are configured to operate simultaneously and perform a full scan of all the profiles of inner and outer surfaces of a tire while the tire is in rotation at a controlled speed on the rotating table; and wherein the data p
    Type: Application
    Filed: February 14, 2018
    Publication date: February 13, 2020
    Applicant: TEKNA AUTOMAZIONE E CONTROLLO SRL
    Inventors: Michele De Stasio, Salvatore Romano, Angelo Pagliuso
  • Publication number: 20190381572
    Abstract: There is provided a method of manufacturing nanoparticles comprising the steps of feeding a core precursor into a plasma torch in a plasma reactor, thereby producing a vapor of silicon or alloy thereof; and allowing the vapor to migrate to a quenching zone of the plasma reactor, thereby cooling the vapor and allowing condensation of the vapor into a nanoparticle core made of the silicon or alloy thereof, wherein the quenching gas comprises a passivating gas precursor that reacts with the surface of the core in the quenching zone produce a passivation layer covering the core, thereby producing said nanoparticles. The present invention also relates to nanoparticles comprising a core covered with a passivation layer, the core being made of silicon or an alloy thereof, as well as their use, in particular in the manufacture of anodes.
    Type: Application
    Filed: March 2, 2018
    Publication date: December 19, 2019
    Applicants: HYDRO-QUÉBEC, TEKNA PLASMA SYSTEMS INC.
    Inventors: Jiayin GUO, Richard DOLBEC, Maher BOULOS, Dominic LEBLANC, Abdelbast GUERFI, Karim ZAGHIB
  • Patent number: 10028368
    Abstract: An induction plasma torch comprises a tubular torch body, a tubular insert, a plasma confinement tube and an annular channel. The tubular torch body has upstream and downstream sections defining respective inner surfaces. The tubular insert is mounted to the inner surface of the downstream section of the tubular torch body. The plasma confinement tube is disposed in the tubular torch body, coaxial therewith. The plasma confinement tube has a tubular wall having a thickness tapering off in an axial direction of plasma flow. The annular channel is defined between, on one hand, the inner surface of the upstream section of the tubular torch body and an inner surface of the insert and, on the other hand, an outer surface of the tubular wall of the plasma confinement tube. The cooling channel carries a fluid for cooling the plasma confinement tube.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: July 17, 2018
    Assignee: Tekna Plasma Systems, Inc.
    Inventors: Maher I. Boulos, Jerzy W. Jurewicz, Nicolas Dignard, Alexandre Auger, Sébastien Thellend
  • Publication number: 20170326649
    Abstract: The present disclosure relates to a process and an apparatus for producing powder particles by atomization of a feed material in the form of an elongated member such as a wire, a rod or a filled tube. The feed material is introduced in a plasma torch. A forward portion of the feed material is moved from the plasma torch into an atomization nozzle of the plasma torch. A forward end of the feed material is surface melted by exposure to one or more plasma jets formed in the atomization nozzle. The one or more plasma jets being includes an annular plasma jet, a plurality of converging plasma jets, or a combination of an annular plasma jet with a plurality of converging plasma jets. Powder particles obtained using the process and apparatus are also described.
    Type: Application
    Filed: August 2, 2017
    Publication date: November 16, 2017
    Applicant: TEKNA PLASMA SYSTEMS INC.
    Inventors: Maher I. Boulos, Jerzy W. Jurewicz, Alexandre Auger
  • Patent number: 9751129
    Abstract: The present disclosure relates to a process and an apparatus for producing powder particles by atomization of a feed material in the form of an elongated member such as a wire, a rod or a filled tube. The feed material is introduced in a plasma torch. A forward portion of the feed material is moved from the plasma torch into an atomization nozzle of the plasma torch. A forward end of the feed material is surface melted by exposure to one or more plasma jets formed in the atomization nozzle. The one or more plasma jets being includes an annular plasma jet, a plurality of converging plasma jets, or a combination of an annular plasma jet with a plurality of converging plasma jets. Powder particles obtained using the process and apparatus are also described.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: September 5, 2017
    Assignee: TEKNA PLASMA SYSTEMS INC.
    Inventors: Maher I. Boulos, Alexandre Auger, Jerzy W. Jurewicz
  • Patent number: 9718131
    Abstract: The present disclosure relates to a process and an apparatus for producing powder particles by atomization of a feed material in the form of an elongated member such as a wire, a rod or a filled tube. The feed material is introduced in a plasma torch. A forward portion of the feed material is moved from the plasma torch into an atomization nozzle of the plasma torch. A forward end of the feed material is surface melted by exposure to one or more plasma jets formed in the atomization nozzle. The one or more plasma jets being includes an annular plasma jet, a plurality of converging plasma jets, or a combination of an annular plasma jet with a plurality of converging plasma jets. Powder particles obtained using the process and apparatus are also described.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: August 1, 2017
    Assignee: TEKNA PLASMA SYSTEMS, INC.
    Inventors: Maher I. Boulos, Jerzy W. Jurewicz, Alexandre Auger
  • Publication number: 20170106448
    Abstract: The present disclosure relates to a process and an apparatus for producing powder particles by atomization of a feed material in the form of an elongated member such as a wire, a rod or a filled tube. The feed material is introduced in a plasma torch. A forward portion of the feed material is moved from the plasma torch into an atomization nozzle of the plasma torch. A forward end of the feed material is surface melted by exposure to one or more plasma jets formed in the atomization nozzle. The one or more plasma jets being includes an annular plasma jet, a plurality of converging plasma jets, or a combination of an annular plasma jet with a plurality of converging plasma jets. Powder particles obtained using the process and apparatus are also described.
    Type: Application
    Filed: December 29, 2016
    Publication date: April 20, 2017
    Applicant: TEKNA PLASMA SYSTEMS INC.
    Inventors: Maher I. BOULOS, Jerzy W. JUREWICZ, Alexandre AUGER
  • Publication number: 20160381777
    Abstract: An induction plasma torch comprises a tubular torch body, a tubular insert, a plasma confinement tube and an annular channel. The tubular torch body has upstream and downstream sections defining respective inner surfaces. The tubular insert is mounted to the inner surface of the downstream section of the tubular torch body. The plasma confinement tube is disposed in the tubular torch body, coaxial therewith. The plasma confinement tube has a tubular wall having a thickness tapering off in an axial direction of plasma flow. The annular channel is defined between, on one hand, the inner surface of the upstream section of the tubular torch body and an inner surface of the insert and, on the other hand, an outer surface of the tubular wall of the plasma confinement tube. The cooling channel carries a fluid for cooling the plasma confinement tube.
    Type: Application
    Filed: June 28, 2016
    Publication date: December 29, 2016
    Applicant: TEKNA PLASMA SYSTEMS INC.
    Inventors: Maher I. BOULOS, Jerzy W. JUREWICZ, Nicolas DIGNARD, Alexandre AUGER, Sébastien THELLEND
  • Patent number: 9516734
    Abstract: A plasma reactor comprises a torch body comprising a plasma torch for generating plasma, a reactor section in fluid communication with the torch body for receiving the plasma from the plasma torch, and a quench section in fluid communication with the reactor section. The quench section comprises an inner wall defining a quench chamber, the inner wall has a serrated configuration, and the quench chamber has an upstream end adjacent the reactor section and an opposite downstream end. The plasma reactor also comprises at least one heating element in thermal communication with the reactor section, wherein the at least one heating element provides for selectively modulating a temperature within the reactor section.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: December 6, 2016
    Assignee: TEKNA PLASMA SYSTEMS INC.
    Inventors: Maher I. Boulos, Jerzy Jurewicz, Jiayin Guo
  • Publication number: 20160323987
    Abstract: An induction plasma torch comprises a tubular torch body, a plasma confinement tube disposed in the tubular torch body coaxial therewith, a gas distributor head disposed at one end of the plasma confinement tube and structured to supply at least one gaseous substance into the plasma confinement tube; an inductive coupling member embedded within the tubular torch body for applying energy to the gaseous substance to produce and sustain plasma in the plasma confinement tube, and an electrically conductive capacitive shield on an inner surface of the tubular torch body. The capacitive shield is segmented into axial strips interconnected at one end. Axial grooves are machined in the inner surface of the tubular torch body, the axial grooves being interposed between the axial strips.
    Type: Application
    Filed: June 9, 2016
    Publication date: November 3, 2016
    Applicant: TEKNA PLASMA SYSTEMS INC.
    Inventors: Maher I. Boulos, Nicolas Dignard, Alexandre Auger, Jerzy Jurewicz, Sebastien Thellend
  • Patent number: 9435007
    Abstract: A titanium metal production apparatus is provided with (a) a first flow channel that supplies magnesium in a state of gas, (b) a second flow channel that supplies titanium tetrachloride in a state of gas, (c) a gas mixing section in which the magnesium and titanium tetrachloride in a state of gas are mixed and the temperature is controlled to be 1600° C. or more, (d) a titanium metal deposition section in which particles for deposition are arranged so as to be movable, the temperature is in the range of 715 to 1500° C., and the absolute pressure is 50 kPa to 500 kPa, and (e) a mixed gas discharge section which is in communication with the titanium metal deposition section.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: September 6, 2016
    Assignees: HITACHI METALS, LTD., TEKNA PLASMA SYSTEMS INC.
    Inventors: Gang Han, Tatsuya Shoji, Shujiroh Uesaka, Mariko Fukumaru, Maher I. Boulos, Jiayin Guo, Jerzy Jurewicz
  • Patent number: 9380693
    Abstract: A plasma confinement tube for use in an induction plasma torch is disclosed. The plasma confinement tube defines a geometrical axis and an outer surface. The plasma confinement tube includes a capacitive shield comprising a film of conductive material applied to the outer surface of the plasma confinement tube and segmented into axial strips. The axial strips are interconnected at one end. Axial grooves are machined in the outer surface of the plasma confinement tube, and interposed between the axial strips. The conductive film may have a thickness smaller than a skin-depth calculated for a frequency of operation of the induction plasma torch and an electrical conductivity of the conductive material of the film.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: June 28, 2016
    Assignee: Tekna Plasma Systems Inc.
    Inventors: Maher I. Boulos, Nicolas Dignard, Alexandre Auger, Jerzy Jurewicz, Sébastien Thellend
  • Patent number: 9163299
    Abstract: A device for producing titanium metal comprises (a) a first heating unit that heats and gasifies magnesium and a first channel that feeds the gaseous magnesium, (b) a second heating unit that heats and gasifies titanium tetrachloride so as to have a temperature of at least 1600° C. and a second channel that feeds the gaseous titanium tetrachloride, (c) a venturi section at which the second channel communicates with an entrance channel, the first channel merges into a throat and as a result the magnesium and the titanium tetrachloride combine in the throat and a mixed gas is formed in the exit channel, and in which the temperature of the throat and the exit channel is regulated to be at least 1600° C., (d) a titanium metal deposition unit that communicates with the exit channel and has a substrate for deposition with a temperature in the range of 715-1500° C., and (e) a mixed gas discharge channel that communicates with the titanium metal deposition unit.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: October 20, 2015
    Assignees: HITACHI METALS, LTD., TEKNA PLASMA SYSTEMS INC.
    Inventors: Maher I. Boulos, Jiayin Guo, Jerzy Jurewicz, Gang Han, Shujiroh Uesaka, Tatsuya Shoji
  • Publication number: 20140356078
    Abstract: A powder flow monitor includes a powder transport tube, a sensor of a flow of powder in the powder transport tube, and an oscillator configured to impart a cleaning vibration to the powder transport tube. A method is for in-flight monitoring of a flow of powder using the powder flow monitor.
    Type: Application
    Filed: May 29, 2014
    Publication date: December 4, 2014
    Applicant: TEKNA PLASMA SYSTEMS INC.
    Inventors: Radoslaw STANOWSKI, Maher BOULOS
  • Patent number: 8871303
    Abstract: Disclosed is a method for producing titanium metal, which comprises: (a) a step in which a mixed gas is formed by supplying titanium tetrachloride and magnesium into a mixing space that is held at an absolute pressure of 50-500 kPa and at a temperature not less than 1700° C.; (b) a step in which the mixed gas is introduced into a deposition space; (c) a step in which titanium metal is deposited and grown on a substrate for deposition; and (d) a step in which the mixed gas after the step (c) is discharged. In this connection, the deposition space has an absolute pressure of 50-500 kPa, the substrate for deposition is arranged in the deposition space, and at least a part of the substrate for deposition is held within the temperature range of 715-1500° C.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: October 28, 2014
    Assignees: Hitachi Metals, Ltd., Tekna Plasma Systems Inc.
    Inventors: Gang Han, Shujiroh Uesaka, Tatsuya Shoji, Mariko Fukumaru (nee ABE), Maher I. Boulos, Jiayin Guo, Jerzy Jurewicz
  • Publication number: 20140310870
    Abstract: A mobile hospital bassinet includes a lower platform having a plurality of wheels and an upper platform. A plurality of vertically-operable legs connects the upper platform to the lower platform. A control is in operable communication with the plurality of vertically-operable legs, wherein the control is configured to dispose the vertically-operable platform in a position relative to the lower platform. An infant basket is coupled with the upper platform, wherein a tilting mechanism is coupled to the upper platform and the infant basket to dispose the infant basket between a plurality of angles relative to the upper platform. A plurality of compartments of the infant basket is defined by an interior surface of the infant basket. A cabinet assembly coupled to an underside of the upper platform.
    Type: Application
    Filed: April 18, 2014
    Publication date: October 23, 2014
    Applicant: Tekna, Inc.
    Inventors: Matthew Gregory Czach, Bryce Kelly Porter
  • Patent number: 8859931
    Abstract: A process and apparatus for preparing a nanopowder are presented. The process comprises feeding a reactant material into a plasma reactor in which is generated a plasma flow having a temperature sufficiently high to vaporize the material; transporting the vapor with the plasma flow into a quenching zone; injecting a preheated quench gas into the plasma flow in the quenching zone to form a renewable gaseous condensation front; and forming a nanopowder at the interface between the renewable controlled temperature gaseous condensation front and the plasma flow.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: October 14, 2014
    Assignee: Tekna Plasma Systems Inc.
    Inventors: Maher I. Boulos, Jerzy Jurewicz, Jiayin Guo, Xiaobao Fan, Nicolas Dignard
  • Publication number: 20130255445
    Abstract: A device for producing titanium metal comprises (a) a first heating unit that heats and gasifies magnesium and a first channel that feeds the gaseous magnesium, (b) a second heating unit that heats and gasifies titanium tetrachloride so as to have a temperature of at least 1600° C. and a second channel that feeds the gaseous titanium tetrachloride, (c) a venturi section at which the second channel communicates with an entrance channel, the first channel merges into a throat and as a result the magnesium and the titanium tetrachloride combine in the throat and a mixed gas is formed in the exit channel, and in which the temperature of the throat and the exit channel is regulated to be at least 1600° C., (d) a titanium metal deposition unit that communicates with the exit channel and has a substrate for deposition with a temperature in the range of 715-1500° C., and (e) a mixed gas discharge channel that communicates with the titanium metal deposition unit.
    Type: Application
    Filed: November 17, 2011
    Publication date: October 3, 2013
    Applicants: TEKNA PLASMA SYSTEMS INC., HITACHI METALS, LTD.
    Inventors: Maher I. Boulos, Jiayin Guo, Jerzy Jurewicz, Gang Han, Shujiroh Uesaka, Tatsuya Shoji