Patents by Inventor Luc Bourgois

Luc Bourgois has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7566486
    Abstract: A braided hose reinforcement includes left and right turning strips. Each of the strips includes a number of elongated metal elements embedded in a matrix of a polymer material.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: July 28, 2009
    Assignee: NV Bekaert SA
    Inventors: Luc Bourgois, Paul Dambre, Dirk Meersschaut, Luc Ravelingien
  • Publication number: 20070110937
    Abstract: A strip (10) for use in manufacturing a flexible pipe or tube (30) comprises a thermoplastic matrix (12) with reinforcing elements (14) and further comprises a barrier layer (16, 18, 20), which is bonded to the thermoplastic matrix (12). The strip provides the two functions of both reinforcement and barrier and allows simplifying the way of manufacturing a flexible pipe or tube.
    Type: Application
    Filed: October 4, 2004
    Publication date: May 17, 2007
    Inventors: Erwin Lokere, Luc Bourgois
  • Patent number: 6883551
    Abstract: A braided hose reinforcement (14) comprises left and right turning strips (20, 22). Each of said strips comprises a number of steel wires. The steel wires (24) located at the side regions of the strips have a tensile strength which is substantially lower than the tensile strength of the steel wires of the central region.
    Type: Grant
    Filed: April 5, 2001
    Date of Patent: April 26, 2005
    Assignee: N.V. Bekaert S.A.
    Inventors: Luc Bourgois, Paul Dambre, Dirk Meersschaut, Luc Ravelingien
  • Publication number: 20030150167
    Abstract: A window elevator system (10) is adapted to be built inside the door of a motor vehicle comprises a driving drum (12), a transmission member (14) and a window (16). The transmission member (14) transmits the movement from the drum to the window. The transmission member is comprises a belt (14). The belt (14) is reinforced by one or more steel cords (28, 38)): at least one of said steel cords is of one of following types which has an improved fatigue resistance: (i) The steel cord (28) comprises more than one strand (30, 34) and each of 18 the strands (30, 34) comprises steel filaments (32, 36) with a diameter less than or equal to 0.12 mm, at least five strands (34) are arranged at the circumferential side of the cord (28); (ii) The steel cord (38) comprises more than one filament (40, 42, 44) and each of the filaments has a diameter less than or equal to 0.12 mm, at least five filaments (44) are arranged at the circumferential side of said cord.
    Type: Application
    Filed: November 8, 2002
    Publication date: August 14, 2003
    Inventors: Luc Bourgois, Paul Bruyneel, Bert Vanderbeken
  • Publication number: 20030129336
    Abstract: A braided hose reinforcement comprises left and right turning strips. Each of said strips comprises a number of elongated metal elements embedded in a matrix of a polymer material.
    Type: Application
    Filed: November 21, 2002
    Publication date: July 10, 2003
    Inventors: Luc Bourgois, Paul Dambre, Dirk Meersschaut, Luc Ravelingien
  • 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: 5883018
    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 .alpha. 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 15, 1997
    Date of Patent: March 16, 1999
    Assignee: N.V. Bekaert S.A.
    Inventors: Luc Bourgois, Pol Bruyneel, Roger Vanassche, Frans Van Giel
  • Patent number: 5768874
    Abstract: A steel cord (10) comprises eight or more strands (12, 14) twisted together. Each of the strands has a substantially same cord twisting direction and a substantially same cord twisting pitch in the steel cord, and each of the strands consists of two to five individual filaments (16, 18) twisted together. Such a multi-strand steel cord can be manufactured without having to twist the individual strands separately and beforehand.
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: June 23, 1998
    Assignee: N.V. Bekaert S.A.
    Inventors: Luc Bourgois, Paul Soenen, Frans Van Giel
  • Patent number: 5461850
    Abstract: A steel cord (10) has a diameter D and includes a core strand (12) and up to nine peripheral strands (14) surrounding the core strand. The core strand (12) has a diameter D1 and the peripheral strands (14) have a diameter D2. The ratio core strand diameter to peripheral strand diameter D1/D2 is greater than a predetermined value in order to enable rubber penetration. Each strand has a center of one or more center filaments (16, 22) and two or more layers of filaments (18, 20, 24, 26) surrounding the center. The twist angle of a radially outer layer is smaller than the twist angle of a radially inner layer of the same strand. A first free space (28) ranging from 0.0015.times.D to 0.0075.times.D is provided in at least the core strand between each pair of filaments (18) of the radially most inner layer.
    Type: Grant
    Filed: December 2, 1993
    Date of Patent: October 31, 1995
    Assignee: N.V. Bekaert S.A.
    Inventors: Pol Bruyneel, Luc Bourgois
  • Patent number: 5321941
    Abstract: A steel cord (1) for the reinforcement of rubber articles such as tires includes a core of two to four steel filaments (2) and a layer of steel filaments (3, 4) around the core. All of the filaments have a diameter between 0.15 and 0.40 mm and are twisted in the same direction and at the same pitch. The cord has over a substantial portion of its entire length cross-sections where the accumulated gaps between adjacent layer filaments are at least 0.03 mm. At least one filament of the layer has been preformed differently from the other filaments. The above structure avoids core migration.
    Type: Grant
    Filed: October 25, 1991
    Date of Patent: June 21, 1994
    Assignee: N.V. Bekaert S.A.
    Inventors: Jan Bollen, Luc Bourgois, Bernard Huysentruyt
  • Patent number: 5234044
    Abstract: A reinforcing strip, and method of making same specifically adapted for use in reinforcing plies in the belt of rubber tires. The strip comprises a number, preferably 4 to 7, of parallel wires, tightly bound together by a wrapping wire or a binder. This strip form allows to combine the advantages of steel strip, i.e. high lateral and low radial stiffness and thinner plies, with those of conventional steel cord, i.e. high tensile strength and fatigue resistance.
    Type: Grant
    Filed: May 17, 1991
    Date of Patent: August 10, 1993
    Assignee: N.V. Bekaert S.A.
    Inventor: Luc Bourgois
  • Patent number: 5198307
    Abstract: A steel strip (1) comprises two to seven round steel filaments (2) lying in parallel adjacent to one another so as to form a single plane of core filaments and one or more filaments (4) which are wrapped around the core filaments in one single wrapping direction. One or more core filaments, individually, or the plane of the core filaments as a whole have residual elastic torsions to such an extent that the strip remains substantially flat over the whole length of the strip if the strip is not subjected to external forces.
    Type: Grant
    Filed: November 20, 1991
    Date of Patent: March 30, 1993
    Assignee: N. V. Bekaert S.A.
    Inventors: Luc Bourgois, Urbain D'Haene, Daniel Van Wassenhove
  • Patent number: 4969497
    Abstract: Strand for application as reinforcement in objects of polymer material comprising at least one core and less than six outside wires arranged round it, the core having an outside diameter larger than the diameter of the circle tangent to each of the outside wires in the hollow space that remains free when their cross-sections have the highest packing density and smaller than the diameter of the outside wires, whereby the outside wires are made of carbon steel wire with a tensile strength of at least 2250-1130 log d N/mm.sup.2, d being the wire diameter in mm.
    Type: Grant
    Filed: December 13, 1988
    Date of Patent: November 13, 1990
    Assignee: N.V. Bekaert S.A.
    Inventor: Luc Bourgois
  • Patent number: 4840214
    Abstract: A reinforcing strip, and method of making same, specifically adapted for use in reinforcing plies in the belt of rubber tires. The strip comprises a number, preferably 4 to 7, of parallel wires, tightly bound together by a wrapping wire or a binder. This strip form allows to combine the advantages of steel strip, i.e. high lateral and low radial stiffness and thinner piles, with those of conventional steel cord, i.e. high tensile strength and fatigure resistance.
    Type: Grant
    Filed: September 10, 1987
    Date of Patent: June 20, 1989
    Assignee: N. V. Bekaert S. A.
    Inventor: Luc Bourgois
  • Patent number: 4818631
    Abstract: A strand for reinforcing objects made of polymer material comprising at least one core wire and less than six outside wires arranged round it, the core wire having an outside diameter larger than the diameter of the circle tangent to each of the outside wires in the hollow space that remains free when their cross-sections have the highest packing density and smaller than the diameter of the outside wires, whereby the outside wires are made of carbon steel wire with a tensile strength of at least 2250-1130 log d N/mm.sup.2, d being the wire diameter in mm. The core wire has a tensile strength less than 2250-1130 log d N/mm.sup.2.
    Type: Grant
    Filed: May 11, 1987
    Date of Patent: April 4, 1989
    Assignee: N.V. Bekaert S.A.
    Inventor: Luc Bourgois
  • Patent number: 4785617
    Abstract: A process and machine for making a cord in a structure of one or more layers of filaments, all twisted with a same twist pitch p around a core in which the filaments are not twisted around each other with that same twist pitch p. The cord is made in one continous process in which the core filaments are bundled in a twister, then the layer filaments are joined in parallel to the core bundle on exit from the twister, and the whole is then twisted in a double-twist bunching machine.
    Type: Grant
    Filed: April 20, 1987
    Date of Patent: November 22, 1988
    Assignee: N.V. Bekaert S.A.
    Inventors: Luc Bourgois, Luc Sabbe
  • Patent number: 4724663
    Abstract: A steel cord, for use in the reinforcement of resilient articles such as rubber tires, comprises a central bundle of wires surrounded by a circumferential layer of helicoidally twisted wires. In the central bundle, one can distinguish a core and a surrounding layer, the latter having the same twist pitch as the circumferential layer. In order to reduce wire migration, the wires of the central bundle show a limited number of relative position changes, between 2 and 300 per 30 cm cord length.
    Type: Grant
    Filed: September 5, 1986
    Date of Patent: February 16, 1988
    Assignee: N.V. Bekaert S.A.
    Inventors: Luc Bourgois, Freddy Baillievier
  • Patent number: 4722210
    Abstract: A process for the manufacture of hose or tubing conditions plastic high pressure hose having at least one reinforcing layer of steel wires, cords or longitudinal segments thereof. The hose is internally pressurized for a predetermined period of time which provides a residual permanent elongation of at least 0.5% and increases the interior volume by at least 2% upon release of the pressure.
    Type: Grant
    Filed: February 26, 1986
    Date of Patent: February 2, 1988
    Assignee: N.V. Bekaert S.A.
    Inventors: Luc Bourgois, Urbain D'Haene, Godfried Vanneste
  • Patent number: 4628683
    Abstract: A steel cord, for use in the reinforcement of resilient articles such as rubber tyres, comprises a central bundle of wires surrounded by a circumferential layer of helicoidally twisted wires. In the central bundle, one can distinguish a core and a surrounding layer, the latter having the same twist pitch as the circumferential layer. In order to reduce wire migration, the wires of the central bundle show a limited number of relative position changes, between 2 and 300 per 30 cm cord length.
    Type: Grant
    Filed: June 26, 1985
    Date of Patent: December 16, 1986
    Assignee: N. V. Bekaert S.A.
    Inventors: Luc Bourgois, Freddy Baillievier
  • Patent number: 4627229
    Abstract: A steel cord for use in the reinforcement of resilient articles such as rubber tires has a core and one surrounding layer of wires, the diameter and twist pitch of the core wires being substantially different from the diameter and twist pitch of the wires of the layer surrounding the core. This construction eliminates wire migration without loss of reinforcing ability of the cord in the resilient material.
    Type: Grant
    Filed: June 26, 1985
    Date of Patent: December 9, 1986
    Assignee: N.V. Bekaert S.A.
    Inventor: Luc Bourgois