Patents Assigned to N.V. Bekaert S.A.
  • Patent number: 6707295
    Abstract: A method for distinguishing between a semi-soft magnetic material, having a magnetic saturation field H sub s ranging from 100A/m to 3000 A/m, and a soft magnetic material, having a magnetic saturation field H sub s ranging from 3 A/m to 100 A/m, includes (a) emitting an electromagnetic drive signal of one or more particular frequencies to an article so that any present semi-soft magnetic material or soft magnetic material in the article go into saturation for both positive and negative magnetic fields; (b) detecting an electromagnetic detection signal (20) emanating from the article; (c) measuring time or relative phase delays (A, B) between one or more reference points of the drive signal and points at which positive and negative peaks of the detection signal occur; (e) comparing the measured time or relative phase delays with values which are typical for semi-soft magnetic or soft magnetic features in order to make a decision whether the material is soft magnetic or semi-soft magnetic.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: March 16, 2004
    Assignee: N. V. Bekaert S.A.
    Inventors: Johannes Te Lintelo, John Fisher, Paul Robertson
  • Patent number: 6652602
    Abstract: A process for the continuous dyeing of plastic films, such as polyethylene terephthalate, is characterized by passing the film through a dye bath comprised of dye stuffs dissolved, suspended or dispersed in a liquid carrier comprised at least in part of a polymer, preferably a polyol, having at least one free hydroxyl group and a molecular weight within the range of from about 200 to about 600. The hydrogen bonding provided by the hydroxyl group, together with the high molecular weight and high boiling point of the polyol, mitigate against migration of the dye stuff out of the film, i.e., fading of the film, and impart long lasting color fastness to the film. Rapid diffusion of the dye bath into the film is enhanced by thermal and ultrasonic energization of the bath.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: November 25, 2003
    Assignee: N.V. Bekaert S.A.
    Inventors: Xiaoming Yang, Raymond B. Turner
  • Publication number: 20030209003
    Abstract: An electrically conductive yarn comprises stainless steel fibers. the electrically conductive yarn comprises at least one elongated element, which has an outer surface being provided out of metal or metal alloy having a lower specific electrical resistance as the stainless steel fibers.
    Type: Application
    Filed: May 13, 2003
    Publication date: November 13, 2003
    Applicant: N.V. BEKAERT S.A.
    Inventors: Steve Verstraeten, Jan Pavlinec, Pol Speleers
  • Publication number: 20030184099
    Abstract: An impact beam having a polymer matrix and a metal reinforcing structure, the metal reinforcing structure including metal cords that can be made from metal elements having a diameter of 100 &mgr;m or more. The polymer matrix can include a thermoplastic material and/or a fiber material, and the metal can be steel, and the metal cords can be parallel to each other. The polymer matrix can include two or more layers that can be made from the same or different material, one of which can be positioned around the surface of the metal cords and can have a mechanical bond with the cord. The invention also includes a method of making the impact beam.
    Type: Application
    Filed: March 7, 2003
    Publication date: October 2, 2003
    Applicants: N.V. BEKAERT S.A., POLYNORM N.V.
    Inventors: Peter A.M. Van Damme, Paul Corscadden, Willem Dekeyser
  • Patent number: 6607998
    Abstract: A burner membrane has at least one layer consisting of a compressed, needled fiber web with a porosity of between 60% and 95%, and that is constructed of heat-resistant stainless steel fibers. A method for its manufacture includes the steps of providing a fiber web composed of heat-resistant stainless steel fibers, needling the fiber web, and compressing the needled fiber web to the desired porosity.
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: August 19, 2003
    Assignee: N. V. Bekaert S.A.
    Inventors: Eddy Lambert, Gabriel Dewaegheneire
  • Patent number: 6598793
    Abstract: A method for checking the authenticity of a security article of the type containing magnetic particles having a magnetic saturation field Hs being greater than 100 A/m. The method includes the following steps: (a) generating an alternating field of one or more fundamental frequencies; (b) subjecting an article to be detected to the field; (c) detecting a detection signal emanating from the article to be detected; and (d) examining the detection signal for the presence of any particular higher harmonics of the fundamental frequencies or of any linear combination of the fundamental frequencies and of the harmonics, the particular harmonics or the linear combination being indicative of the presence of the magnetic particles. The method is applied at point of transaction locations, where the article to be detected is brought into close proximity with a sensor.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: July 29, 2003
    Assignee: N.V. Bekaert S.A.
    Inventors: John Fisher, Paul Robertson, Jon Burrell, David Cross
  • Patent number: 6597561
    Abstract: An electrical contact system is provided which comprises an electrically conductive porous fleece and one or more contact bodies. The electrically conductive porous fleece and the contact bodies are sintered to each other, so avoiding hot spots during the use of the element.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: July 22, 2003
    Assignee: N.V. Bekaert S.A.
    Inventors: Geert Devooght, Willy Marrecau
  • Publication number: 20030115689
    Abstract: A process for the continuous dyeing of plastic films, such as polyethylene terephthalate, is characterized by passing the film through a dye bath comprised of dye stuffs dissolved, suspended or dispersed in a liquid carrier comprised at least in part of a polymer, preferably a polyol, having at least one free hydroxyl group and a molecular weight within the range of from about 200 to about 600. The hydrogen bonding provided by the hydroxyl group, together with the high molecular weight and high boiling point of the polyol, mitigate against migration of the dye stuff out of the film, i.e., fading of the film, and impart long lasting color fastness to the film. Rapid diffusion of the dye bath into the film is enhanced by thermal and ultrasonic energization of the bath.
    Type: Application
    Filed: December 21, 2001
    Publication date: June 26, 2003
    Applicant: N.V. BEKAERT S.A.
    Inventors: Xiaoming Yang, Raymond B. Turner
  • Patent number: 6572651
    Abstract: An intravascular metal stent having a tubular wall and a biocompatible coating on at least a major part of the wall surface which coating has a thickness of less than 4 &mgr;m and contains a diamond like amorphous material, preferably DLN.
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: June 3, 2003
    Assignee: N.V. Bekaert S.A.
    Inventors: Ivan De Scheerder, Eddy Demeyere, Dominique Neerinck, Wilfried Coppens
  • Publication number: 20030100235
    Abstract: The visible light reflectance of polymeric substrates coated with conductive oxides is minimized over a broad region of the visible light spectrum by alternating layers of materials of high and low refractive index interposed between the substrate and the conductive oxide. The conductive oxide is outermost to permit direct electrical contact to be made. Visible light reflectance is 10% or less and visible light transmittance is 90% or more over a broad region of the spectrum.
    Type: Application
    Filed: November 29, 2001
    Publication date: May 29, 2003
    Applicant: N.V. BEKAERT S.A.
    Inventor: Wilfred C. Kittler
  • Publication number: 20030069632
    Abstract: An intravascular metal stent having a tubular wall and a biocompatible coating on at least a major part of the wall surface which coating has a thickness of less than 4 &mgr;m and contains a diamond like amorphous material, preferably DLN.
    Type: Application
    Filed: October 28, 2002
    Publication date: April 10, 2003
    Applicant: N.V. BEKAERT S.A.
    Inventors: Ivan De Scheerder, Eddy Demeyere, Dominique Neerinck, Wilfried Coppens
  • Patent number: 6486597
    Abstract: A diamond-like carbon-containing material useful as a coating for electronic devices including field emission devices and color television tubes, the coatings having both low secondary electron emission coefficients of less than unity and electrical resistivity tunable over a range of from about 10e−2 to about 10e16.
    Type: Grant
    Filed: October 21, 1999
    Date of Patent: November 26, 2002
    Assignee: N.V. Bekaert S.A.
    Inventors: Arvind Goel, Craig Anthony Outten, Chandra Venkatraman, Philip Swab
  • Patent number: 6475636
    Abstract: A steel cord particularly adapted for reinforcement of a protection ply in a tire has under compression in rubber a deformation Wk at instability of at least 3% and is stress-relieved so that its total elongation at rupture in rubber exceeds 3.5%. The steel cord comprises pearlite filaments.
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: November 5, 2002
    Assignee: N.V. Bekaert S.A.
    Inventors: Urbain D'Haene, Marc Eggermont, Yvan Lippens, Dirk Meersschaut
  • Patent number: 6472062
    Abstract: An improved non-sticking diamond-like nanocomposition includes networks of a-C:H and a-Si:O, wherein the H-concentration is between 85% and 125% of the C-concentration. The composition includes preferably 25 to 35 at % of C, 30 to 40 at % of H, 25 to 30 at % of Si, and 10 to 15 at % of O.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: October 29, 2002
    Assignee: N.V. Bekaert S.A.
    Inventors: Dominique Neerinck, Peter Persoone, Marc Sercu
  • Patent number: 6468642
    Abstract: The invention relates to fluorine-doped coatings which include a diamond-like composition containing carbon, silicon, oxygen, hydrogen, and fluorine on various substrates. Preferred substrates include flexible substrates, precision-edged substrates, and electrosurgical instruments. The present invention also relates to a method of making a substrate coated with a fluorine-doped diamond-like coating which includes positioning the substrate in a vacuum coating chamber and depositing a diamond-like composition containing carbon, silicon, oxygen, hydrogen, and fluorine onto the substrate by co-deposition of clusterless particle beams comprised of ions, atoms, or radicals of the carbon, silicon, oxygen, hydrogen, and fluorine, the mean free path of each particle species being in excess of the distance between its source and the growing particle coating surface of the substrate.
    Type: Grant
    Filed: December 2, 1998
    Date of Patent: October 22, 2002
    Assignee: N.V. Bekaert S.A.
    Inventors: Donald J. Bray, Chandra Venkatraman, Craig A. Outten, Christopher Halter, Arvind Goel
  • Patent number: 6465377
    Abstract: A fabric for reinforcement of canvasses having a plastic coating includes a warp and a weft which form meshes. The meshes have a maximum dimension ranging from 5 cm to 30 cm with at least one of the warp or the weft being formed by a strip which comprises a matrix of a thermoplastic material which is adherable to the plastic coating of the canvasses. The strip includes two or more elongated metal members and has a cross-sectional average thickness ranging from 0.50 mm to 3.0 mm and a cross-sectional width ranging from 3 mm to 25 mm. The metal members provide the canvasses sufficient resistance against the cutting action of a knife or against the action of a pair of shears.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: October 15, 2002
    Assignee: N.V. Bekaert S.A.
    Inventors: Ludo Andriaensen, Gerard Vandewalle
  • Patent number: 6438932
    Abstract: A steel structure adapted for the reinforcement of elastomeric members has steel elements containing a plurality of steel filaments at least one of which filaments is provided with first and second crimps. The first crimp lies in a plane that is substantially different from the plane of the second crimp. Application of the both crimps can be carried out efficiently using two pairs of toothed wheels which are not externally driven. This arrangement renders it possible to obtain steel structures with an increased penetration of rubber or with an increased elongation at break.
    Type: Grant
    Filed: September 5, 2001
    Date of Patent: August 27, 2002
    Assignee: N.V. Bekaert S.A.
    Inventors: Xavier De Vos, Yvan Lippens, Albert R. Somers, Frans Van Giel
  • Patent number: 6421977
    Abstract: Reinforcement stirrup for use in masonry includes a support section and a flat stirrup leg extending vertically relative to it. The stirrup leg is inserted in a joint between constructional elements. A positioner positions an essentially horizontally extending main reinforcement. The stirrup leg is positioned in relative to the support section so that the support section of the stirrup leg inserted into a joint between two constructional elements contacts them. The positioner for a main reinforcement may be a hook. A further positioner positions of the reinforcement stirrup relative to a constructional element with which it cooperates, so that an in line positioning of the reinforcement stirrups in relation to one another can easily be achieved. Masonry construction may be provided with a main reinforcement running essentially horizontally and that is positioned with the aid of the reinforcement stirrups.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: July 23, 2002
    Assignee: N.V. Bekaert S.A.
    Inventors: Pol Timperman, Harry Steller
  • Patent number: 6407016
    Abstract: The invention relates to a single-bed weft-knitted textile structure comprising stainless steel fibre bundles, in which a reinforcing multifilament insert yarn with a titre of less than 180 Tex is incorporated with tuck stitches into the textile structure in a regular pattern. The insert yarn is, for example, a multifilament stainless steel yarn, or a multifilament glass fibre yarn. In addition, the invention relates to the use of such a textile structure for covering moulds and tempering or press rings which are utilized in the process of forming glass plates, or for the covering of transportation means for glass plates during their forming process.
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: June 18, 2002
    Assignee: N.V. Bekaert S.A.
    Inventors: Wim Van Steenlandt, Guido Heirbaut
  • Patent number: 6379816
    Abstract: Laminated metal structure includes a radially outer component and a radially inner component concentrically interconnected with each other. The radially outer component has a porosity of at least 80% and the radially inner component is a radially impermeable strength element such as a metal foil. The metal structure can be used in a continuous ambulant peritoneal dialysis treatment for anchoring a catheter in the human body.
    Type: Grant
    Filed: December 29, 1999
    Date of Patent: April 30, 2002
    Assignee: N.V. Bekaert S.A.
    Inventors: Boudewijn De Loose, Ronny Losfeld