Patents Assigned to Sedepro
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Patent number: 5908531Abstract: The present invention proposes a machine for the manufacture of tires on a core 1 which is used for the manufacture of sa8d tires from the start of the assembling until the vulcanizing. The machine comprises, arranged adjacent to each other on a frame 5, a tire assembly station 2 comprising means for forming the raw tire by depositing the different compounds on the core 1 in the order and place required by the architecture of the tire, a vulcanization station 3, and a support handling station 4, as well as a crane 7 for transporting the core 1 between the different stations.Type: GrantFiled: December 23, 1996Date of Patent: June 1, 1999Assignee: SedeproInventor: Daniel Laurent
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Patent number: 5853648Abstract: An apparatus for cooling tires at the end of their vulcanization which includes:a frame having a base intended to be mounted on the ground, defining a horizontal orientation;two shafts mounted for rotation on said frame, substantially parallel to each other and substantially parallel to the horizontal, at a distance from each other less than the outside diameter of the tires to be handled;a drive for rotating at least one of the two shafts;so that, when a tire is placed on said shafts with the axis of rotation of said tire arranged substantially parallel to the axes of said shafts, said drive for placing in rotation being activated, said tire is subjected to a gyroscopic force and remains in equilibrium.Type: GrantFiled: July 25, 1996Date of Patent: December 29, 1998Assignee: SedeproInventor: Daniel R. Cleveland
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Patent number: 5853526Abstract: A module (1) used for the manufacture of tires, comprising an inflatable flexible bladder (10) provided with two beads (11) which is used for the assembling and vulcanization of the tire on the bladder, each bead being anchored on a plate (30, 31). The module (1) has at least one rigid wall mounted on a plate (30, 31) which is adjacent said flexible bladder (10) when the latter is inflated and can be retracted so as to be able to separate the tire from said module (1) after vulcanization and can be spread out radially so as to constitute a reference surface for the assembling of the tire.Type: GrantFiled: January 23, 1997Date of Patent: December 29, 1998Assignee: SedeproInventors: Daniel Laurent, Herve Mousty
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Patent number: 5798076Abstract: The tire mold includes a shell for the molding of the sidewalls, said shell including a laminated assembly formed of lamelliform elements directed substantially parallel to the axis, the molding surface for said sidewall being formed by the adjacent edges of the said lamelliform elements.Type: GrantFiled: June 24, 1996Date of Patent: August 25, 1998Assignee: SedeproInventor: Jean-Pierre Ladouce
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Patent number: 5758961Abstract: The continuous mixing apparatus for preparing a rubber composition has a mixing chamber accommodating at least one rotor rotating in a stator and extending between an upstream end and a downstream end between which the material progressively passes. The base elastomers are introduced at the upstream end of the mixing chamber by means of volumetric pumps capable of delivering the said base polymers under pressure. It has members for the dosaging and forced introduction of the other components, to arranged along the mixing chamber at at least two longitudinally separated positions between the upstream end and the downstream end.Type: GrantFiled: January 22, 1997Date of Patent: June 2, 1998Assignee: SedeproInventors: Michel Deal, Daniel Laurent
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Patent number: 5702548Abstract: The anchoring of the carcass reinforcing elements 1 is assured by circumferential cables 2, with the interposition of a connecting rubber composition 3. The circumferential cable 2 is arranged in several turns forming one or more helices. These circumferential cables have an operational elongation rate A.sub.f =A.sub.e +A.sub.p of more than 4%. This operational elongation rate does not include the specific elongation A.sub.s of the "cable" effect. The maximum stress R.sub.m of the cable 2 is preferably more than 2000 MPa. The cables have undergone a heat treatment which has, in combination, the features of being a recovery annealing treatment and which is carried out directly on cable comprising wires previously separately covered by an adherent coating.Type: GrantFiled: June 28, 1996Date of Patent: December 30, 1997Assignee: SedeproInventors: Jean-Claude Arnaud, Pedro Costa Pereira
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Patent number: 5683643Abstract: An apparatus and method for heating and stirring a charge of a heat-exchange fluid under pressure for the curing of tires in which both a turbine and an electric motor for driving the turbine are enclosed within a fluid-tight enclosure and in which the turbine and the rotor and stator of the electric motor are entirely immersed within the heat-exchange fluid.Type: GrantFiled: May 31, 1995Date of Patent: November 4, 1997Assignee: SedeproInventor: Daniel Laurent
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Patent number: 5660656Abstract: The carcass cords extend into the bead where they are anchored with at least one pile of circumferentially oriented cords by a rubber mix having a Shore A hardness of more than 70 interposed between the carcass cords and the circumferentially oriented cords. The carcass may be formed from a single cord which passes forward and back from one bead to the other or by cut cords. In some embodiments, the carcass cords are divided in the bead into two circumferential alignments spaced axially apart.Type: GrantFiled: October 28, 1994Date of Patent: August 26, 1997Assignee: SedeproInventors: Yves Herbelleauu, Jean-Jacques Pradelle
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Patent number: 5656107Abstract: The peripheral ring of a sector mold for tires is formed of an assembly of plates 1 resting against each other and stacked in such a manner as to push each other back. The ring therefore has a continuous tendency to increase in diameter. This tendency is resisted, for instance, by a conical hoop which simultaneously pushes all the plates 1 radially in molding direction.Type: GrantFiled: June 5, 1995Date of Patent: August 12, 1997Assignee: SedeproInventors: Daniel Laurent, Jean-Pierre Ladouce
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Patent number: 5655891Abstract: The pump includes two pistons 10 each sliding in a cylinder 11. These are fed by a screw 21 through ports 12. Upon delivery, a rotary valve 6 turning in a bearing 1A2 in succession closes off and uncovers the passages 1A1 from the cylinders. This rotary valve 6 includes an axial bore 61 and a slot 62 through which the material collected from the cylinders passes in the direction of the outlet orifice of the pump.Type: GrantFiled: June 6, 1995Date of Patent: August 12, 1997Assignee: SedeproInventors: Michel Deal, Henri Hinc
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Patent number: 5639326Abstract: The sector mold (11) is designed so that, during the molding phase, the molding elements (10, 10a, 10b, 10c) are all equidistant due to devices (13) which assure an elastic repulsion between each other. Some of the elements glide circumferentially with respect to their sector (11) in the final closing phase. In this way, pinching of the rubber between sectors and the appearance of molding burrs are avoided.Type: GrantFiled: November 9, 1994Date of Patent: June 17, 1997Assignee: SedeproInventor: Alain Soulalioux
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Patent number: 5626420Abstract: The continuous mixing apparatus for preparing a rubber composition has a mixing chamber accommodating at least one rotor rotating in a stator and extending between an upstream end and a downstream end between which the material progressively passes. The base elastomers are introduced at the upstream end of the mixing chamber by means of volumetric pumps capable of delivering the said base polymers under pressure. It has members for the dosaging and forced introduction of the other components, arranged along the mixing chamber at at least two longitudinally separated positions between the upstream end and the downstream end.Type: GrantFiled: December 19, 1995Date of Patent: May 6, 1997Assignee: SedeproInventors: Michel Deal, Daniel Laurent
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Patent number: 5622669Abstract: A tire vulcanization apparatus in which an encaser 3 makes it possible to introduce a tire into a mold 1 and, by means of inductors 42, transfers to the mold heat energy necessary for vulcanization and in which a chamber 5 receives several molds 1 and makes it possible to maintain each mold insulated from the environment in order to limit heat losses during the time necessary for the vulcanization.Type: GrantFiled: August 5, 1994Date of Patent: April 22, 1997Assignee: SedeproInventors: Olivier Dailliez, Daniel Laurent, David Myatt
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Patent number: 5616209Abstract: A thread, intended to form a carcass reinforcement, is wound in contiguous hoops on a rigid core through an eyelet fastened on a chain mounted on pulleys arranged around the core. The eyelet carries out a reciprocating movement around the core so as to progressively and contiguously lay a hoop upon each forward movement and a hoop upon each return movement.Type: GrantFiled: June 2, 1995Date of Patent: April 1, 1997Assignee: SedeproInventors: Daniel Laurent, Jean-Claude Mayet
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Patent number: 5609705Abstract: A process and apparatus for arranging cut lengths of reinforcement cords in parallel on a moving rubber surface by feeding the cord into successive cord receiving receptacles on a rotor, cutting predetermined lengths of the cords introduced into the receptacles, removing the cords from the receptacles by a comb which intermeshes with the rotor and advancing and guiding the parallel cords onto the moving rubber surface.Type: GrantFiled: September 28, 1995Date of Patent: March 11, 1997Assignee: SedeproInventors: Daniel Laurent, Miguel Torres Castellano
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Patent number: 5587030Abstract: A tire has a carcass reinforcement preferably formed of a series of circumferential turns of a strip formed of a matrix of elastomeric material reinforced by cords which are arranged side by side and extend transversely in the strip, the turns of strip being arranged in such a manner that, when observed in radial section, they exhibit at least a certain overlap.Type: GrantFiled: June 2, 1995Date of Patent: December 24, 1996Assignee: SedeproInventor: Yves Herbelleau
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Patent number: 5505802Abstract: The laying of pieces 40 of cord 4 is assured by a laying tube 30 which receives the cord by placing its inlet facing the outlet of a cord distributor, the knife 85 of which cuts the cord just upstream of the laying tube 30. At the end of the laying tube 30 there is disposed a laying head 32 which is displaced transversely along the support 1 on which the reinforcement is built. The angle of laying of the cord is adjusted by judiciously coordinating the transverse speed of displacement of the head 32 and the speed of rotation of the support 1.Type: GrantFiled: November 7, 1994Date of Patent: April 9, 1996Assignee: SedeproInventors: Claude Debroche, Daniel Laurent
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Patent number: 5492669Abstract: The peripheral ring of a sector mold for tires is formed of an assembly of plates 1 resting against each other and stacked in such a manner as to push each other back. The ring therefore has a continuous tendency to increase in diameter. This tendency is resisted, for instance, by a conical hoop which simultaneously pushes all the plates 1 radially in the molding direction.Type: GrantFiled: December 27, 1994Date of Patent: February 20, 1996Assignee: SedeproInventors: Daniel Laurent, Jean-Pierre Ladouce
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Patent number: 5466132Abstract: A rotary plug 1 has recesses 5 debouching on its side face 12 which are in communication with the inlet 6 and recesses 5 debouching on its side face 13 which are in communication with the outlet 7. These recesses 5 pass across a port 4 which permits passage to and from a unit consisting of cylinder 2 and piston 3.Type: GrantFiled: December 28, 1993Date of Patent: November 14, 1995Assignee: SedeproInventor: Michel Deal
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Patent number: 5453140Abstract: A thread, intended to form a carcass reinforcement, is wound in contiguous hoops on a rigid core through an eyelet fastened on a chain mounted on pulleys arranged around the core. The eyelet carries out a reciprocating movement around the core so as to progressively and contiguously lay a hoop upon each forward movement and a hoop upon each return movement.Type: GrantFiled: June 23, 1994Date of Patent: September 26, 1995Assignee: SedeproInventors: Daniel Laurent, Jean-Claude Mayet