Patents Assigned to N.V. Bekaert S.A.
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Patent number: 6365273Abstract: 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: GrantFiled: July 16, 1992Date of Patent: April 2, 2002Assignee: N.V. Bekaert S.A.Inventor: Freddy Baillievier
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Patent number: 6334293Abstract: 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: GrantFiled: February 18, 2000Date of Patent: January 1, 2002Assignee: N.V. Bekaert S.A.Inventors: Horst Poethke, Steven Wostyn, Stijn Vanneste
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Patent number: 6329073Abstract: 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: GrantFiled: July 20, 1999Date of Patent: December 11, 2001Assignee: N.V. Bekaert S.A.Inventors: Frank Deruyck, Johan Van Brabant
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Patent number: 6328887Abstract: 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: GrantFiled: January 20, 2000Date of Patent: December 11, 2001Assignee: N. V. Bekaert S.A.Inventor: John Joseph Toon
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Patent number: 6311466Abstract: 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: GrantFiled: May 24, 2000Date of Patent: November 6, 2001Assignee: N. V. Bekaert S.A.Inventors: Xavier De Vos, Yvan Lippens, Albert R. Somers, Frans Van Giel
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Patent number: 6289702Abstract: 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: GrantFiled: September 14, 2000Date of Patent: September 18, 2001Assignee: N.V. Bekaert S.A.Inventors: Guido Heirbaut, Wim Van Steenlandt
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Patent number: 6276173Abstract: 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: GrantFiled: August 2, 1999Date of Patent: August 21, 2001Assignee: N.V. Bekaert S.A.Inventors: Boudewijn Vanhuysse, Wim Van Steenlandt
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Patent number: 6276120Abstract: 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: GrantFiled: August 25, 1999Date of Patent: August 21, 2001Assignee: N.V. Bekaert S.A.Inventors: Ludo Adriaensen, Gerard Vandewalle
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Patent number: 6269602Abstract: 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: GrantFiled: December 13, 1999Date of Patent: August 7, 2001Assignee: N.V. Bekaert S.A.Inventors: Hendrik Thooft, Volker Henke, Manfred Teutsch, Ulrich Gossla
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Patent number: 6256954Abstract: 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: GrantFiled: April 13, 1999Date of Patent: July 10, 2001Assignee: N.V. Bekaert S.A.Inventor: Hendrik Thooft
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Patent number: 6257488Abstract: 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: GrantFiled: July 2, 1999Date of Patent: July 10, 2001Assignee: N.V. Bekaert S.A.Inventors: Paul Robertson, John Fisher, Jon Burrell
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Patent number: 6247298Abstract: 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: GrantFiled: January 5, 1999Date of Patent: June 19, 2001Assignee: N.V. Bekaert S.A.Inventors: Luc Bourgois, Pol Bruyneel, Roger Vanassche, Frans Van Giel
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Patent number: 6235108Abstract: 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: GrantFiled: August 23, 1999Date of Patent: May 22, 2001Assignee: N.V. Bekaert S.A.Inventor: Ann Lambrechts
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Patent number: 6228471Abstract: 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: GrantFiled: July 27, 1999Date of Patent: May 8, 2001Assignee: N.V. Bekaert S.A.Inventors: Dominique Neerinck, Peter Persoone
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Patent number: 6228188Abstract: 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: GrantFiled: July 22, 1994Date of Patent: May 8, 2001Assignee: N.V. Bekaert S.A.Inventors: Dirk Meersschaut, Godfried Vanneste
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Patent number: 6199344Abstract: 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: GrantFiled: May 24, 1999Date of Patent: March 13, 2001Assignee: N.V. Bekaert S.A.Inventors: Aloïs Looverie, Paul Timperman
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Patent number: 6200675Abstract: 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: GrantFiled: March 15, 1999Date of Patent: March 13, 2001Assignee: N.V. Bekaert S.A.Inventors: Dominique Neerinck, Arvind Goel
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Patent number: 6168118Abstract: 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: GrantFiled: July 26, 1999Date of Patent: January 2, 2001Assignee: N.V. Bekaert S.A.Inventors: Yves Vancraeynest, Johan Veys
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Patent number: 6159278Abstract: 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: GrantFiled: April 1, 1992Date of Patent: December 12, 2000Assignee: N.V. Bekaert S. A.Inventors: Dirk Nemegeer, Yves Vancraeynest
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Patent number: 6149424Abstract: 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: GrantFiled: August 26, 1999Date of Patent: November 21, 2000Assignees: N. V. Bekaert S.A., N. V. Acotech S.A.Inventors: Willy Marrecau, Ozzie Missoum