Patents Assigned to Michelin & Cie
  • Process and device for obtaining a wire made of amorphous metal alloy having an iron base
    Patent number: 5477910
    Abstract: A process and device for producing a wire (12) made of amorphous metal alloy having an iron base by producing a jet (7) of molten alloy (4) through the orifice (60) of a die (6), and introducing this jet (7) into a cooling liquid (9) urged by centrifugal force against the inner wall of a rotary drum. The crucible (2) containing the alloy (4) and the die (6) are made using different materials and are joined by a joint (25) the material of which differs from those of the crucible (2) and of the die (6). Furthermore, means (3) are employed for heating the alloy (4) both in the crucible (2) and in the die (6) and an inert or reducing gas is delivered directly in contact with the jet (7) as it leaves the die (6). Wire (12) obtained with this process or this device, this wire being employed, for example, for reinforcing pneumatic tires.
    Type: Grant
    Filed: November 23, 1993
    Date of Patent: December 26, 1995
    Assignee: Compagnie Generale des Etablissements Michelin - Michelin & Cie
    Inventors: Denis Bijaoui, Guy Jarrige, Michel Legras, Jean Roche
  • Device for monitoring and cold checking of inflation pressure of vehicle tires
    Patent number: 5460037
    Abstract: A device for monitoring and "cold" checking of an inflation pressure of ts of a vehicle. The device monitors the inflation pressure of the tires with a central processing unit, as well as a socket placed on the vehicle, connected to the central processing unit and which is able to be connected to a portable checking box. This portable checking box can supply power to and communicate with the central processing unit, to thereby check the pressure of the tires "cold" from outside of the vehicle.
    Type: Grant
    Filed: June 24, 1994
    Date of Patent: October 24, 1995
    Assignee: Compagnie Generale des Etablissements Michelin-Michelin & Cie
    Inventors: Jean-Francois Chamussy, Jean-Pierre Francois
  • Extrusion apparatus and method of extrusion for raw rubber mixes
    Patent number: 5453238
    Abstract: The extrusion apparatus proposed effects an extrusion of the roller-spout type onto a cylindrical roller 7 associated with a profiled fixed wall 5 and a second extrusion of the roller die type onto a profiled roller 8 and an associated fixed wall 6, and then superimposes the extrusions in the passage between the rollers 7 and 8.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: September 26, 1995
    Assignee: Compagnie Generale des Etablissements Michelin - Michelin & Cie
    Inventor: Daniel Bardy
  • Inflation valve and method using said valve for the inflation of a tire with sealing ring
    Patent number: 5450886
    Abstract: In order to be able easily to inflate a tire mounted on a rim with a seal ring (6) arranged between the two beads, without presenting the ordinary inconveniences in mounting, the inflation device is formed of a valve (V, V') provided with a locking element (2, 2') intended to be associated with a locking member (83, 51) separate from the valve. The method of inflation consists then in introducing the valve (V, V') provided with its stem (1, 1') and its locking element (2, 2') into the orifice (64) provided in the ring 6 and into the locking member (83, 51), and then turning the valve.
    Type: Grant
    Filed: May 17, 1994
    Date of Patent: September 19, 1995
    Assignee: Compagnie Generale des Etablissements Michelin - Michelin & Cie
    Inventor: Dominique Girard
  • Support device for a tire tread
    Patent number: 5450887
    Abstract: Support device S for the tread of a tire P, comprising a rigid support (1), an elastic cap (2) of rubber stock, a layer of lubricant (5) being arranged between said support (1) and said cap (2) to permit circumferential displacement of one with respect to the other, means (21, 23, 12, 121, 122, 125) being provided to assure the holding of the cap (2) transversely and radially on the support (1).
    Type: Grant
    Filed: July 14, 1994
    Date of Patent: September 19, 1995
    Assignee: Compagnie Generale des Etablissements Michelin - Michelin & Cie
    Inventors: Emmanuel Habay, Guy-Noel Lambert
  • Device for the heat treatment of at least one metal wire with heat-transfer plates
    Patent number: 5433420
    Abstract: A device (100) for the heat treatment of at least one metal wire (1), chaterized by passing the wire (1) within at least one pair of thermal transfer plates (2, 2a, 2b) between two grooves (8, 8a, 8b) made in the two plates (2, 2a, 2b) of each of said pairs, the distance (E) between the plates being variable, the wire (1) being directly in contact with a gas (11) which is practically without forced ventilation and is disposed between the grooves (8, 8a, 8b).
    Type: Grant
    Filed: July 29, 1994
    Date of Patent: July 18, 1995
    Assignee: Compagnie Generale des Etablissements Michelin - Michelin & Cie
    Inventors: Andre Reiniche, Christian Chanet
  • Method and apparatus for grinding tires
    Patent number: 5433042
    Abstract: In order to grind a tire 2 mounted on a vehicle, an abrasive belt 5 is us which is stretched over rollers 51, 52, 53, 54 and 46 which are mounted on a frame 4. By the action of a jack 7, the tire 2 is released of all load. A counterweight 45 urges the frame 4 towards the tire 2. The force with which the abrasive belt 5 rests on the tire 2 can be adjusted to a very low value.
    Type: Grant
    Filed: April 26, 1994
    Date of Patent: July 18, 1995
    Assignee: Compagnie Generale des Etablissements Michelin-Michelin & Cie
    Inventors: Jean Billieres, Abelardo Cabestrero
  • Method for the heat treatment of at least one metal wire with heat-transfer plates
    Patent number: 5423924
    Abstract: A method and for the heat treatment of at least one metal wire (1), chararized by passing the wire (1) within at least one pair of thermal transfer plates (2, 2a, 2b) between two grooves (8, 8a, 8b) made in the two plates (2, 2a, 2b) of each of said pairs, adjusting the variable distance (E) between the plates, so that the wire (1) is directly in contact with a gas (11) which is practically without forced ventilation and is disposed between the grooves (8, 8a, 8b).
    Type: Grant
    Filed: July 20, 1990
    Date of Patent: June 13, 1995
    Assignee: Compagnie Generale des Etablissements Michelin - Michelin & CIE
    Inventors: Andre Reiniche, Christian Chanet
  • Tire with two treads and groove of adapted shape
    Patent number: 5421390
    Abstract: In order to improve the fatigue strength of the bottom (80) of the groove ) which is located axially between the two treads (1A) (1B) of the of the same tire and which extends radially over a reinforcement wire (7) which is located axially at the level of the equatorial plane (XX') of the tire, and below which the carcass reinforcement (10) passes, said groove (8) has a special meridian configuration in combination with the radial position of the center of gravity of the reinforcement wire (7).
    Type: Grant
    Filed: February 25, 1994
    Date of Patent: June 6, 1995
    Assignee: Compagnie Generale des Etablissements Michelin-Michelin & Cie
    Inventors: Francois Gerard, Patrice Peyraud
  • Train of tires with directional tread pattern and method of mounting the tires on a vehicle
    Patent number: 5421389
    Abstract: In order to minimize the disturbance to the occupants of the vehicle as a sult of the noises given off by the tires of the vehicle, the tires have treads provided with "V"-shaped directional tread patterns and are mounted "vertex to the rear" on the front axle of the vehicle and "vertex to the front" on the rear axle of the vehicle.
    Type: Grant
    Filed: June 2, 1993
    Date of Patent: June 6, 1995
    Assignee: Compagnie General des Etablissements Michelin - Michelin & Cie
    Inventors: Francois Favre, Didier Martin
  • Radial tire having crown reinforcement formed of plies of different resistance
    Patent number: 5411071
    Abstract: In order to improve the resistance of a crown reinforcement (20) of a radial tire to perforations, cuts and the drawbacks resulting therefrom, the crown reinforcement (20) is formed of three plies (21, 22, 23) of non-stretchable metal wires or cables. The resistances R.sub.1, R.sub.2, R.sub.3 of these plies being such that1.5.ltoreq.R.sub.1 /R.sub.2 .ltoreq.2.5and0.5.ltoreq.R.sub.3 /R.sub.2 .ltoreq.1.5,the two radially outer plies (22, 23) having wires or cables separated by a distance (e) equal to at least their diameter.
    Type: Grant
    Filed: December 2, 1992
    Date of Patent: May 2, 1995
    Assignee: Compagnie Generale Des Etablisse Michelin-Michelin & Cie
    Inventor: Michel Chapelle
  • Treatment by plasma of an aramid monofilament and monofilament thus obtained
    Patent number: 5411638
    Abstract: A method of treating an aramid monofilament by plasma in such a manner that the monofilament has a wettability by water satisfying the relationship WS.sub.SL .gtoreq.120, W.sub.SL being the reversible solid-liquid adhesion work expressed in mJ/m.sup.2. By way of example, the treatment is carried out by means of a plasma at reduced pressure, and the monofilament is subjected to a coating treatment after the surface treatment. The aramid monofilament is characterized by the following relationships:1.7.ltoreq.Ti.ltoreq.260;40.ltoreq.D.ltoreq.480;T.gtoreq.170-D/3;Mi.gtoreq.2,000; andW.sub.SL .gtoreq.120.In the above relationships, Ti represents linear density in tex, D represents diameter in .mu.m (micrometers), T represents tenacity in cN/tex, and Mi represents initial modulus in cN/tex. The aramid monofilament is particularly useful for reinforcing tires.
    Type: Grant
    Filed: June 22, 1993
    Date of Patent: May 2, 1995
    Assignee: Compagnie Generale Des Establissements Michelin-Michelin & Cie
    Inventors: Denis Bernard, Jean-Luc Cornillon
  • Ply turn-up device for tire building drum
    Patent number: 5407521
    Abstract: The device comprises a ply turn-up bladder 1 capable of moving axially tods the center of the drum 3 in the manner of a caterpillar. It's movement is controlled by the inflation of a thrust bladder 2.
    Type: Grant
    Filed: November 8, 1991
    Date of Patent: April 18, 1995
    Assignee: Compagnie Generale des Etablissements Michelin Michelin & Cie
    Inventor: Rene Falvard
  • Method and device for applying a plurality of threads to a support with the aid of flexible teeth
    Patent number: 5393364
    Abstract: A method and device (1) for causing a plurality of threads (7) to arrive on support (11) so as to obtain a ply (13) while imparting a nonlinear shape to the threads (7). The threads (7) are caused to arrive with controlled speed on a cylindrical drum (2) in rotation around an axis. The threads (7) are imparted the nonlinear shape by means of teeth (5) which are displaced with respect to others, parallel to the axis of rotation. At least some of these teeth are flexible between a free end in contact with a thread (7) and an anchoring zone. Plies (13) obtained with this method or device, these plies being used for instance in a tire.
    Type: Grant
    Filed: July 1, 1993
    Date of Patent: February 28, 1995
    Assignee: Compagnie Generale des Etablissements Michelin - Michelin & Cie
    Inventor: Laurent Millier
  • Method and device for the continuous production of a thread by extrusion into a liquid
    Patent number: 5392838
    Abstract: A method and device (1) for the continuous production of a thread (12) by extrusion of a molten material into a cooling liquid (9) applied by centrifuging against the inner wall (10) of a drum (11). The inner wall (10) of the drum (11) comprises a lateral surface (102) which progressively approaches the axis of rotation of the drum (11) in the direction towards the outside (E) of the drum (11). Means (23, 24) are used which make it possible to displace the thread (12) along said surface (102) so that the thread (12) emerges from the drum (11) under the action of the centrifugal force. Threads (12) obtained by this method and this device, these threads being, for instance, amorphous metal threads used to reinforce automobile tires.
    Type: Grant
    Filed: August 5, 1993
    Date of Patent: February 28, 1995
    Assignee: Compagnie Generale Des Establissements Michelin - Michelin & Cie
    Inventors: Denis Bijaoui, Jean Roche
  • Tire mold and method of molding a tire by means of such a mold
    Patent number: 5382402
    Abstract: In order to assure excellent molding of the tire at the place of the markings appearing on the side wall of a tire, the shell of the mold has cutouts which correspond to the shape of the marking, the cutouts containing removable closures which admit material for molding the markings while permitting venting of the cutout. In one embodiment the removable closure is an insert which slides in the cutout. It is possible to adjust the relief of the marking. Venting is assured by the clearance between the insert and the cutout.
    Type: Grant
    Filed: June 25, 1993
    Date of Patent: January 17, 1995
    Assignee: Compagnie Generale des Etablissements Michelin - Michelin & Cie
    Inventors: Jacques Espie, Daniel Lefevre
  • Tire intended for heavy loads and to be inflated to a high pressure
    Patent number: 5379820
    Abstract: The present invention relates to a tire (P) intended to bear heavy loads and inflated to high pressure, particularly suited for use as an airplane tire. In order to improve the fatigue strength of the beads (4), the axially outer plies (3E, 3F) of the carcass reinforcement (3) in the region of the beads (4) have their edges (30E, 30F) disposed between the upturns (30A, 30B, 30C, 30D) of the axially inner plies (3A, 3B, 3C, 3D).
    Type: Grant
    Filed: June 24, 1993
    Date of Patent: January 10, 1995
    Assignee: Compagnie Generale des Etablissements Michelin - Michelin & Cie
    Inventors: Jean-Pierre Cesar, Antoine Massy
  • Safety support to be incorporated inside a tire
    Patent number: 5363894
    Abstract: A safety support for supporting the tread of a vehicle tire in case of the oss of inflation pressure of the tire has the shape of a Z. The base of the support is fixed to a wheel rim while the connector between the support base and the support top is oriented so as to join the base on a side thereof opposite that facing the vehicle to which the tire is mounted. The asymmetric shape of the support and its orientation produces improved stability upon intervention of the support.
    Type: Grant
    Filed: February 17, 1993
    Date of Patent: November 15, 1994
    Assignee: Compagnie Generale des Etablissements Michelin-Michelin & Cie
    Inventors: Jacques Gouttebessis, Guy Jouve
  • Device for warning of tire underinflation by creating imbalance
    Patent number: 5359886
    Abstract: Device (1, 2, 3, 4) for warning of the under-inflation of a tire, mounted the wheel of the tire, includes a stationary element (10, 71) with two inner chambers (11, 12, 73, 74), one (11, 73) of which is brought to the inflation pressure, the other (12, 74) to the atmospheric pressure, and a centrifugal mass (20, 72). A blocking device (30, 90) blocks any displacement of centrifugal mass (20, 72) when the inflation pressure is greater than a certain threshold and frees the centrifugal mass (20, 72) when the inflation pressure decreases below the inflation threshold. Centrifugal mass (20, 72) can then become off-centered under the effect of centrifugal forces and creates a dynamic imbalance able to be sensed by the driver of the vehicle.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: November 1, 1994
    Assignee: Compagnie Generale des Etablissements Michelin - Michelin & Cie
    Inventor: Antoine Pradelle
  • Shoulder of a tire
    Patent number: D359716
    Type: Grant
    Filed: October 22, 1993
    Date of Patent: June 27, 1995
    Assignee: Compagnie Generale des Etablissements Michelin - Michelin & Cie
    Inventor: Alain Lagnier