Patents Assigned to N.V. Bekaert S.A.
  • Patent number: 6365273
    Abstract: The invention relates to a cord comprising a core structure and one layer, said core structure consisting of 1 to 4 core filaments (1) having a diameter d1, d1, being greater than 0.15 mm and smaller than 0.40 mm, said layer consisting of n+m layer filaments (2) having a diameter d2 and being twisted in the same direction and at the same pitch as the core filaments (1) of said core, d2 being greater than or equal to d1−0.05 mm and being smaller than or equal to d1−0.015 mm, n being equal to the number of core filaments (1) and m being equal to six if n is greater than one and being equal to five if n is equal to one, whereby the core filaments (1) are visually different from the layer filaments (2).
    Type: Grant
    Filed: July 16, 1992
    Date of Patent: April 2, 2002
    Assignee: N.V. Bekaert S.A.
    Inventor: Freddy Baillievier
  • Patent number: 6334293
    Abstract: The invention relates to a composite cord (10) for reinforcement of elastomers comprising a core (12) of a high polymer material, a first layer of steel filaments (14) twisted around said core and a second layer of steel filaments (16) twisted around said first layer. The polymer material is present in a sufficient volume to create gaps between adjacent filaments of the first layer and possibly also between the filaments of the second layer. The composite cord is characterized by a decreased fretting of the steel filaments.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: January 1, 2002
    Assignee: N.V. Bekaert S.A.
    Inventors: Horst Poethke, Steven Wostyn, Stijn Vanneste
  • Patent number: 6328887
    Abstract: A tow wound filter cartridge comprises a permeable core and one or more tows wound in a helicoidally or diamond-like shaped way or serpentine-like way around the core, having a zero twist degree, in order to obtain a filter rating of below 75 micrometer. The tows may comprise metal fibers. Preferably the tows of the filter cartridge consist only of metal fibers.
    Type: Grant
    Filed: January 20, 2000
    Date of Patent: December 11, 2001
    Assignee: N. V. Bekaert S.A.
    Inventor: John Joseph Toon
  • Patent number: 6329073
    Abstract: An elongated steel object is covered with a coating layer having 1) an electrode potential exceeding the electrode potential of steel, or 2) a rate of corrosion which is lower than the rate of corrosion of steel and is treated with a corrosion inhibiting composition.
    Type: Grant
    Filed: July 20, 1999
    Date of Patent: December 11, 2001
    Assignee: N.V. Bekaert S.A.
    Inventors: Frank Deruyck, Johan Van Brabant
  • Patent number: 6311466
    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: May 24, 2000
    Date of Patent: November 6, 2001
    Assignee: N. V. Bekaert S.A.
    Inventors: Xavier De Vos, Yvan Lippens, Albert R. Somers, Frans Van Giel
  • Patent number: 6289702
    Abstract: The heterogeneous knitted fabric comprises metal fibres and other fibres. The fabric has a single knitted layer structure in which yarns with a high metal fibre content are situated towards one surface and yarns with a low metal fibre content are situated towards the other surface.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: September 18, 2001
    Assignee: N.V. Bekaert S.A.
    Inventors: Guido Heirbaut, Wim Van Steenlandt
  • Patent number: 6276120
    Abstract: A push-pull steel cable (10) comprises a core (12) and an outer layer of filaments (16) twisted around the core (12). The cable (10) is provided with an external coating (20) of polyethylene terephthalate. The coating (20) gives to the cable (10) a good resistance against corrosion, a good weatherability, a good adhesion and adhesion retention and a friction resistance which is comparable to the friction resistance of a cable with a nylon coating. The cable (10) can be used as a brake cable, a shifting lever cable or a window elevator cable.
    Type: Grant
    Filed: August 25, 1999
    Date of Patent: August 21, 2001
    Assignee: N.V. Bekaert S.A.
    Inventors: Ludo Adriaensen, Gerard Vandewalle
  • Patent number: 6276173
    Abstract: The invention relates to a contact member or covering (1) for covering structures (4,9) that come into contact with glass objects (12) during their forming process. The covering is a relatively compact non-woven fiber web (2) with apertures (10) and comprised of randomly oriented fibers which are composed, for example, of stainless steel. This covering can, for example, be used to cover tempering and pressure rings which are used in the process of forming glass plates.
    Type: Grant
    Filed: August 2, 1999
    Date of Patent: August 21, 2001
    Assignee: N.V. Bekaert S.A.
    Inventors: Boudewijn Vanhuysse, Wim Van Steenlandt
  • Patent number: 6269602
    Abstract: A fixed construction (10) comprises rigid piles (12) and a monolithic concrete floor slab resting (14) on the piles. The floor slab comprises straight zones connecting in two directions, ie. lengthwise and broadwise, the shortest distance between the areas of the floor slab above the piles. The floor slab (14) is reinforced by a combination of: (a) fibres (22) distributed over the volume of the floor slab (14); and (b) steel bars (16, 16′) located in those straight zones. This construction reduces considerably the amount of reinforcement steel, increases the bearing capacity and enables to reduce the time for making such a construction.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: August 7, 2001
    Assignee: N.V. Bekaert S.A.
    Inventors: Hendrik Thooft, Volker Henke, Manfred Teutsch, Ulrich Gossla
  • Patent number: 6256954
    Abstract: A fixed construction (10) comprises rigid piles (12) and a monolithic concrete floor slab resting (14) on the piles. The floor slab comprises straight zones connecting in the two directions, i.e. lengthwise and broadwise, the shortest distance between the areas of the floor slab above the piles. The floor slab (14) is reinforced by a combination of: (a) fibers (22) distributed over the volume of the floor slab (14); (b) and steel rods (16, 16′) with a yield strength of at least 690 MPa and being located in those straight zones. This construction reduces considerably the amount of reinforcement steel, increases the bearing capacity and enables to reduce the time for making such a construction.
    Type: Grant
    Filed: April 13, 1999
    Date of Patent: July 10, 2001
    Assignee: N.V. Bekaert S.A.
    Inventor: Hendrik Thooft
  • Patent number: 6257488
    Abstract: Apparatus for detecting the presence of magnetic elongated particles in a substrate, the base material of the substrate having magnetic properties substantially differing from the corresponding magnetic properties of the elongated particles. The elongated particles have such a long and thin form that their demagnetization factor N is smaller than {fraction (1/250)}, they have a diameter smaller than 30 micrometer, and they a magnetic saturation field greater than 100 A/m. Apparatus includes an emitter which emits an electromagnetic source signal of one or more particular base frequencies to the substrate (e.g., so that any magnetic elongated particles present go into a non-linear part of a B-H curve for at least part of cycle of the source signal).
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: July 10, 2001
    Assignee: N.V. Bekaert S.A.
    Inventors: Paul Robertson, John Fisher, Jon Burrell
  • Patent number: 6247298
    Abstract: A fabric (144) for use as a stab-resistant insert in protective textiles comprises a plurality of steel cords (100). Each of the steel cords (100) comprises a longitudinal axis (102) and two or more steel filaments (104). Each of the steel filaments (104) forme a twisting angle &agr; with the longitudinal axis (102) of the steel cord (100). The steel cords (100) have two or more of such twisting angles which are substantially different from each other so that any penetrating stab or knife is stopped.
    Type: Grant
    Filed: January 5, 1999
    Date of Patent: June 19, 2001
    Assignee: N.V. Bekaert S.A.
    Inventors: Luc Bourgois, Pol Bruyneel, Roger Vanassche, Frans Van Giel
  • Patent number: 6235108
    Abstract: A steel fiber (10) for reinforcement of high-performance concrete or mortar has a length ranging from 3 mm to 30 mm, a thickness ranging from 0.08 mm to 0.30 mm, and a tensile strength greater than 2000 MPa. The steel fiber is provided with anchorages (12,24) the dimension of which in a direction perpendicular to the longitudinal axis of the steel fiber is maximum 50% of the thickness. These anchorages provide an effective staying in the high-performance concrete without influencing the mixability of the steel fibers in a negative way.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: May 22, 2001
    Assignee: N.V. Bekaert S.A.
    Inventor: Ann Lambrechts
  • Patent number: 6228471
    Abstract: The invention relates to a substrate (1) covered at least in part with a coating (6) comprising a number of layered structures (2) each such structure comprising a first diamond like nanocomposite composition layer (3) closest to the substrate, which composition comprises interpenetrating networks of a-C:H and a-Si:O, a second diamond like carbon composition layer (4) on top of said first layer, a transition layer (5) between said first and second layer comprising a mixture of said diamond like nonocomposite and said diamond like carbon compositions; and when the number of layered structures (2) is greater than one, then the coating (6) comprises an intermediate layer (7) comprising a mixture of said diamond like carbon and diamond like nanocomposite compositions sandwiched between each pair of consecutive layered structures (2). It also relates to a process for manufacturing such a covered substrate.
    Type: Grant
    Filed: July 27, 1999
    Date of Patent: May 8, 2001
    Assignee: N.V. Bekaert S.A.
    Inventors: Dominique Neerinck, Peter Persoone
  • Patent number: 6228188
    Abstract: A process of patenting at least one steel wire (10) with a diameter less than 2.8 mm. The cooling is alternatingly done by film boiling in water (14, 16) during one or more water cooling periods and in air during one or more air cooling periods. A water cooling period immediately follows an air cooling period and vice versa. The number of the water cooling periods, the number of the air cooling periods, the length of each water cooling period are so chosen so as to avoid the formation of martensite or bainite.
    Type: Grant
    Filed: July 22, 1994
    Date of Patent: May 8, 2001
    Assignee: N.V. Bekaert S.A.
    Inventors: Dirk Meersschaut, Godfried Vanneste
  • Patent number: 6200675
    Abstract: The invention relates to an improved diamond-like nanocomposite composition comprising networks of a-C:H and a-Si:O wherein the H-concentration is between 40% and 80% of the C-concentration and having a coefficient of friction against steel which is smaller than 0.1 in air with a relative humidity up to 90%, or in water. The invention relates also to a process for depositing the composition on a substrate in a vacuum chamber. The composition comprises preferably 30 to 70 at % of C, 20 to 40 at % of H, 5 to 15 at % of Si and 5 to 15 at % of O and can be doped with transition metals.
    Type: Grant
    Filed: March 15, 1999
    Date of Patent: March 13, 2001
    Assignee: N.V. Bekaert S.A.
    Inventors: Dominique Neerinck, Arvind Goel
  • Patent number: 6199344
    Abstract: Grid-shaped reinforcement strip is configured for reinforcing masonry joints, and includes at one substantially straight elongated reinforcement wire having a substantially rectangular cross section. There is a further reinforcement wire having a substantially rectangular cross section that is spaced apart from the at least one reinforcement wire. At least one connecting wire extends between opposed faces of such at least two spaced apart reinforcement wires. An unflattened weld attaches the at least one connecting wire to respective ones of opposed faces of such at least two reinforcement wires. The connecting wire preferably has a substantially round cross section, and the thickness of the at least one connecting wire is as thick as or less thick than the thickness of the at least two reinforcement wires.
    Type: Grant
    Filed: May 24, 1999
    Date of Patent: March 13, 2001
    Assignee: N.V. Bekaert S.A.
    Inventors: Aloïs Looverie, Paul Timperman
  • Patent number: 6168118
    Abstract: The invention relates to a reinforcing mat (1) for reinforcing a top layer of a ground, which top layer consists of bitumen, asphalt or a hydrocarbon-containing material of like nature, in which the reinforcing mat (1) is a mat woven with longitudinal wires (2, 3) and provided with reinforcement elements (4) running in the transverse direction of the mat, in which the reinforcement elements (4) consist of helically twisted steel profiled wires of essentially rectangular cross section.
    Type: Grant
    Filed: July 26, 1999
    Date of Patent: January 2, 2001
    Assignee: N.V. Bekaert S.A.
    Inventors: Yves Vancraeynest, Johan Veys
  • Patent number: 6159278
    Abstract: The invention relates to the manufacturing of a castable hot mixture of bituminous concrete, in which a multiplicity of steel wire pieces are equally distributed in the mixture. According to the invention, an ingredient is used in the form of a multiplicity of bundles in which the wire pieces are held together by a binding substance that is able to disintegrate in cementitious concrete, as already known, but that in addition is disintegrated by melting, in such a way that such bundles are usable for both cementitious and bituminous concretes.
    Type: Grant
    Filed: April 1, 1992
    Date of Patent: December 12, 2000
    Assignee: N.V. Bekaert S. A.
    Inventors: Dirk Nemegeer, Yves Vancraeynest
  • Patent number: 6149424
    Abstract: A membrane for radiant gas burners comprises a fabric (18) of metal fibers. The membrane has a surface which has a permanent undulation to such a degree that its surface area is at least five per cent greater than the surface area of a comparable flat membrane. In a preferable embodiment, the amplitude and the pitch of the undulation is such that, in operation, heat is radiated to and reflected from the flanks (24', 24") of the undulation. The result is an increased radiative output and radiative efficiency.
    Type: Grant
    Filed: August 26, 1999
    Date of Patent: November 21, 2000
    Assignees: N. V. Bekaert S.A., N. V. Acotech S.A.
    Inventors: Willy Marrecau, Ozzie Missoum