Including Core Pins Forming Transverse Voids In Solid Tire Portion Patents (Class 425/37)
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Patent number: 11498366Abstract: In a tire having composite grooves provided on a shoulder land portion, dry performance and wet performance are improved. The tire includes a tread portion 2. The tread portion 2 includes a first shoulder land portion 13. The first shoulder land portion 13 has shoulder lateral grooves 15 and shoulder composite grooves 20. The shoulder lateral grooves 15 and the shoulder composite grooves 20 are each curved so as to be convex in a tire circumferential direction. Each shoulder composite groove 20 includes, in a cross section thereof, a sipe element 21 having a width not greater than 1.5 mm and extending from a tread surface of the first shoulder land portion 13 in a tire radial direction, and a groove element 22 connected to an inner side in the tire radial direction of the sipe element 21 and having a width greater than 1.5 mm.Type: GrantFiled: April 17, 2020Date of Patent: November 15, 2022Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Mari Mishima, Hiroshi Yamaoka
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Patent number: 10828804Abstract: A molding system for forming a composite structure having trapped volumes is presented. The molding system comprises a plurality of removeable inserts, a bottom tool member, and a plurality of restraints. Each removeable insert of the plurality of removeable inserts comprises a plurality of pieces configured to be disassembled for removal from the composite structure. Each removeable insert is configured to be placed in contact with the bottom tool member. The plurality of restraints is configured to restrain the plurality of removeable inserts in a vertical direction relative to the bottom tool member.Type: GrantFiled: October 3, 2018Date of Patent: November 10, 2020Assignee: The Boeing CompanyInventor: Stephen R. Dark
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Patent number: 8636490Abstract: A system for molding a non-pneumatic tire includes a lower mold portion including a lower face plate configured to provide a lower relief corresponding to a first side of the tire. The lower mold portion also includes a plurality of lower projections extending from the lower face plate and configured to correspond to cavities in the first side of the tire, wherein the lower projections taper as the lower projections extend from the lower face plate, and wherein at least some of the lower projections are hollow. The system further includes an upper mold portion configured to be coupled to the lower mold portion. The lower mold portion and the upper mold portion are configured to be coupled to one another, such that a hub associated with the tire provides a seal between the lower mold portion and the upper mold portion.Type: GrantFiled: September 7, 2012Date of Patent: January 28, 2014Assignee: Caterpillar Inc.Inventors: Kevin L. Martin, Aaron K. Amstutz, David J. Colantoni, Stephen J. Pierz
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Patent number: 8267679Abstract: A mold device is described for use in a mold having a plurality of tread molding segments. Each tread molding segment has an end face for mating with an adjoining segment. The mold device includes a piston located on the segment and is actuated by the opening and closing of the mold. The piston is positioned within a first chamber and has a plunger end in communication with a working material and a spring. Each of the mold segments further includes a retractable blade assembly having a distal end in fluid communication with a second chamber. The first chamber is in fluid communication with the second chamber. Closing of the mold compresses the piston, forcing the working fluid to transfer from the first chamber to the second chamber, actuating the blade assembly.Type: GrantFiled: October 18, 2010Date of Patent: September 18, 2012Assignee: The Goodyear Tire & Rubber CompanyInventors: Andre Cuny, Yacine Ouyahia, Christophe Jean Alexis Pierre
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Patent number: 8186984Abstract: A tire mold is described that includes a plurality of tread molding segments having an inner surface for molding the tire tread. The mold further includes a plurality of sidewall plates having an inner surface for molding the tire sidewall. The tread mold segments together with the sidewalls cooperate to form a tire molding cavity. The sidewall plate further comprises a slot that extends from the outer surface of the tread segment to the inner mold surface, and has a pin extending from the outer surface of the tread segment. The pin is mounted to a rotatable body which can swivel. The rotatable body further comprises a guide pin which cooperates with a working member to rotate the body into a desired position in order to position the pin in the tire tread to be molded. The working member actuates the rotatable body into various positions.Type: GrantFiled: October 18, 2010Date of Patent: May 29, 2012Assignee: The Goodyear Tire & Rubber CompanyInventors: Andre Cuny, Frank Pierre Severens, Bruno Pierre Maitre, Jérôme Marcel Germain Delu
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Patent number: 8186985Abstract: A mold device is described for use in a mold having a plurality of tread molding segments. Each tread molding segment has an end face for mating with an adjoining segment. The mold device includes a piston located on the segment end face and is actuated by the opening and closing of the mold. Each of the mold segments further includes a retractable blade assembly having a first and second chamber; wherein the piston is positioned within the first chamber and having a plunger end in communication with a temperature sensitive block of material and a spring. The first chamber is in fluid communication with a second chamber, wherein said second chamber further comprises a retractable blade mounted within a blade collar wherein the blade collar is slidably received within said second chamber; said second chamber further comprises a temperature sensitive block of material and a spring.Type: GrantFiled: October 18, 2010Date of Patent: May 29, 2012Assignee: The Goodyear Tire & Rubber CompanyInventors: André Cuny, Yacine Ouyahia, Christophe Jean Alexis Pierre
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Patent number: 8075294Abstract: A tire mold is described that includes a plurality of tread molding segments having an inner surface for molding the tire tread. The mold further includes a plurality of sidewall plates having an inner surface for molding the tire sidewall. The tread mold segments together with the sidewalls cooperate to form a tire molding cavity. The sidewall plate further comprises a slot that extends from the outer surface of the tread segment to the inner mold surface, and has a piston having a head slidably received in the slot. A pin is positioned between the piston head and an end of the slot. The mold further includes actuating means for actuating the piston in the slot when the mold is closed.Type: GrantFiled: October 14, 2009Date of Patent: December 13, 2011Assignee: The Goodyear Tire & Rubber CompanyInventors: André Cuny, Frank Pierre Severens, Jean Joseph Victor Collette
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Patent number: 7833461Abstract: Process for molding and vulcanizing a tire, in which a tire blank is placed in a curing press including a mold intended to form the outer shape of the tire, and a pressing member for transmitting the molding pressure and the heat needed to vulcanize the internal portion of the tire blank. A removable elastic membrane, which includes perforations passing completely therethrough, is interposed, during the molding and the vulcanizing step, between the inner surface of the tire and the pressing member, so as to form, by the constituent material of the internal wall of the tire flowing into the perforations, noise-attenuating protuberances distributed over the internal surface of the tire.Type: GrantFiled: November 1, 2007Date of Patent: November 16, 2010Assignee: Michelin Recherche et Technique S.A.Inventor: Nicolas Dautrey
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Patent number: 7661943Abstract: A mold for vulcanizing an unvulcanized tire blank comprises: two axial members each carrying a molding surface for molding a sidewall of the tire, at least one of the axial members being movable between a position for molding the sidewall and a position for unmolding the tire; at least one molding member for molding a channel in a tread of the tire, the molding member being movable between a channel-molding position and a channel-unmolding position; and axial movement means for axially moving the channel-molding member between its molding and unmolding positions. The axial movement means include releasable connection means between the channel-molding member and the axial member.Type: GrantFiled: December 22, 2008Date of Patent: February 16, 2010Assignee: Michelin Recherche et Technique S.A.Inventors: Cédric Delbet, Olivier Lauwers, Gérard Alegre, José Merino-Lopez, Jean-Claude Desvignes
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Patent number: 7575424Abstract: A mold and molding device for forming a sunken groove in a tire is provided. The molding device includes a thin flexible wire having a desired cross-sectional shape. The wire thickness can range from about 0.5 mm to about 5 mm. The flexible wire is preferably hyperelastic. An optional molding element may be connected to the flexible wire.Type: GrantFiled: August 14, 2007Date of Patent: August 18, 2009Assignee: The Goodyear Tire & Rubber CompanyInventors: Gia-Van Nguyen, Yacine Ouyahia, Alain Emile Francois Roesgen, Yvan Sac, Francis Bartholome, Gerard Louis Marie Schmit, Anne-France Gabrielle Jeanne-Marie Cambron, Joel Andre Ghislain Delogne, Guy Jacobs, Andre Domange
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Patent number: 7566213Abstract: A mold and molding device for forming a sunken groove in a tire is provided. The molding device includes a thin flexible wire having one or more molded elastomer elements thereon. The flexible wire is preferably hyperelastic and the molded elastomer is preferably silicone rubber.Type: GrantFiled: August 14, 2007Date of Patent: July 28, 2009Assignee: The Goodyear Tire & Rubber CompanyInventors: Gia-Van Nguyen, Alain Emile Francois Roesgen, Peter Phelps Roch
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Patent number: 7544054Abstract: A tire mold and a molding device for forming a sunken groove in a tire are provided. The molding device includes one or more rigid elements joined to a flexible member along an attachment point or line on the connecting surface of the rigid element. The flexible member is formed from a flexible material, preferably a superalloy, or hyperelastic material. If multiple rigid elements are utilized, the rigid elements are closely spaced together such that a portion of the opposed walls are in mating contact with an adjacent rigid element.Type: GrantFiled: July 18, 2007Date of Patent: June 9, 2009Assignee: The Goodyear Tire & Rubber CompanyInventors: Gia-Van Nguyen, Alain Emile Francois Roesgen, Anne-France Gabrielle Jeanne-Marie Cambron, Peter Phelps Roch, Marc Ernest Ginter
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Patent number: 7544053Abstract: A tire mold and a molding device for forming a sunken groove in a tire are provided. The molding device includes one or more rigid elements joined to a flexible member. The flexible member is formed from a flexible material, preferably a superalloy, or hyperelastic material. The molding device may further comprise a magnet. A portion of the flexible member is positioned in contact with a first surface of a relief forming element of a mold and the rigid element has a mating surface in mating contact with a second surface of the relief forming element. The mold further may further comprise a second relief forming element positioned adjacent the first relief forming element, wherein the rigid element further includes an outer surface in mating contact with a surface of said second relief forming element.Type: GrantFiled: August 14, 2007Date of Patent: June 9, 2009Assignee: The Goodyear Tire and Rubber CompanyInventors: Gia-Van Nguyen, Alain Emile Francois Roesgen, Peter Phelps Roch, Anne-France Gabrielle Jeanne-Marie Cambron, Yacine Ouyahia, Yvan Sac, Francis Bartholome, Gerard Louis Marie Schmit, Joel Andre Ghislain Delogne, Guy Jacobs, Raymond Marie Joseph Ghislain Houba, Bernard Marie Henin
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Patent number: 7507078Abstract: A tire mold and a molding device for forming a sunken groove, sipe in a tire is provided. The molding device molding device comprises a flexible member and a blade element, the flexible member having a distal end for mounting to a tire mold, a radiused midsection and a second end, wherein a portion of the second end is embedded within the blade element, the blade element having a lower surface with a cutout to allow bending of the flexible member.Type: GrantFiled: August 14, 2007Date of Patent: March 24, 2009Assignee: The Goodyear Tire & Rubber CompanyInventors: Gia-Van Nguyen, Anne-France Gabrielle Jeanne-Marie Cambron, Frank Pierre Severens, Raymond Marie Joseph Ghislain Houba
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Patent number: 7338269Abstract: A mold for molding a tread of rubber mix, this tread comprising a running surface delimited axially by lateral faces, this mold comprising (i) a central part for molding the running surface, movable between an open configuration allowing filling of the mold and a closed configuration allowing molding, the central part comprising at least one rib for molding a groove in the running surface; (ii) two lateral parts for molding the lateral faces, at least one of the lateral parts being axially movable relative to the central part; et (iii) at least one pin for molding a channel inside the tread, this pin being anchored in one of the lateral parts; and in which, when the mold is closed, a contact surface is formed between the pin and the rib, and the pin and/or the rib comprise a buffer made of a deformable material, deformation of which makes it possible to fill in the clearance between the pin and the rib at the contact surface when the mold is closed.Type: GrantFiled: October 4, 2006Date of Patent: March 4, 2008Assignee: Michelin Recherche et Technique S.A.Inventors: Cédric Delbet, Jean-Claude Desvignes, Robert W. Knepfle
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Patent number: 7276198Abstract: A tire having an outer surface and plurality of circumferential and lateral grooves formed into the outer surface. The circumferential and lateral grooves extend to at least one groove depth to define a groove bottom surface. The circumferential and lateral grooves also define a plurality of tread blocks disposed around the circumference of the tire. The tire further includes at least one tie bar extending between at least two of the tread blocks and across at least one of the circumferential and lateral grooves. The tie bar is spaced from the groove bottom surface. In one aspect of the invention, the tire is manufactured in a mold and the tie bar is formed by a supplemental molding member that is removed from the molded tire after the main molding member has been removed from the tire.Type: GrantFiled: December 28, 2004Date of Patent: October 2, 2007Assignee: The Goodyear Tire & Rubber CompanyInventors: Gia-Van Nguyen, Anne-France Gabrielle Jeanne-Marie Cambron, Raymond Marie Joseph Ghislain Houba, Frank Severens
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Publication number: 20020142056Abstract: The invention relates to a mold and a process for molding a tread 11 and a tire having a tread, the tread including a running surface 12, lateral surfaces 13, axial recesses 15 opening axially on to at least one of the lateral surfaces, the process including steps of inserting into the uncured tread projections 5 which mold the axial recesses 15, and of then removing them from the vulcanized tread, the process being characterized in that the projections 5 are inserted in the direction of the thickness of the tread 11 and are removed in the direction of the width of the tread 11.Type: ApplicationFiled: February 15, 2002Publication date: October 3, 2002Inventors: Jean-Claude Aperce, Gilbert Menard, Jose Merino Lopez
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Patent number: 6408910Abstract: A tread for a tire having, on at least one lateral part, and radially to the inside of the running surface of said tread, a plurality of cavities oriented virtually transversely and opening onto at least one of the edges of the tread, the cavities being intended to form grooves and incisions opening radially towards the outside of the tread after wear of between 15% and 45% of the thickness of the tread when new. Also, a mold adapted for the molding of such a tread pattern and including, on at least one part molding one of the sidewalls, elements in relief for molding cavities radially beneath the running surface of a tread when new.Type: GrantFiled: November 29, 1999Date of Patent: June 25, 2002Assignee: Compagnie Generale des Establishments Michelin-Michelin CieInventors: Alain Lagnier, Jean-Luc Chanet, Georges La Vialle
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Patent number: 6402489Abstract: A tire mold has vent pins extending axially into the mold cavity for penetration of the lower sidewall bead area of the tire providing vents in the tire upon opening of the mold.Type: GrantFiled: June 5, 2001Date of Patent: June 11, 2002Assignee: The Goodyear Tire & Rubber CompanyInventor: Dale Kenneth Dyer
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Patent number: 5382402Abstract: 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: GrantFiled: June 25, 1993Date of Patent: January 17, 1995Assignee: Compagnie Generale des Etablissements Michelin - Michelin & CieInventors: Jacques Espie, Daniel Lefevre
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Patent number: 4543050Abstract: A tire manufacturing mold having a contour surface consisting of a predetermined curved surface corresponding to the outer circumferential surface of a tire being molded, a plurality of bone portions and blade portions, both protruding on the contour surface, and a manufacturing method of the same are disclosed. The tire manufacturing mold is manufactured by discharge machining in such a manner that the blade portions are caused to protrude essentially vertically to the contour surface, and that the contour surface, the bone portions and the blade portions are integrally formed.Type: GrantFiled: June 1, 1983Date of Patent: September 24, 1985Assignees: Bridgestone Tire Co. Ltd., Institute of Technology Precision Electrical Discharge WorksInventors: Kenichi Takahashi, Koichi Hirano, Shoji Futamura
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Patent number: 4525132Abstract: A machine for molding and curing a mass of resilient material into a desired shape in one operation and, if desired, bonding the resilient material to another material in the same operation; generally in the class of molded rubber or rubber-like goods and particularly in the class of self-cooling airless wheels for vehicles, which wheels contain holes that taper inwardly from the periphery of the tire to and/or through the rim. The machine is characterized by fin compressor boxes that impel fins into a mold cavity to cause a compressive reaction on resilient material therein, thereby expelling excess air from the mold through escape holes. An air passage may penetrate the fins for air or water to be circulated therethrough to aid in heating, cooling and/or curing the product. Withdrawal of fins from mold cavity permits easy removal of cured product.Type: GrantFiled: November 4, 1983Date of Patent: June 25, 1985Inventor: Rulon A. Williams
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Patent number: 4367109Abstract: Inner tubes for pneumatic tires including a toric cushion made from an elastomer material having cells independent of each other.A process for manufacturing such inner tubes with a mold for preforming and vulcanizing semi-toric elements, the mold includes fingers for molding recessed cavities and an incorporated heating network, the preformed semi-toric elements having undergone a first vulcanization are then joined together and subjected to a second vulcanization in an appropriate apparatus.Type: GrantFiled: October 7, 1980Date of Patent: January 4, 1983Assignee: Hutchinson-MapaInventors: Robert Estrade, Jean Michaut
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Patent number: 4247275Abstract: PCT No. PCT/US79/01107 PCT Filed Dec. 17, 1979 Sec. 371 Dec. 17, 1979 Sec. 102(e) Date Dec. 17, 1979.A method and apparatus for forming the mounting portion of a sidewall protector includes a rigid mold (19) in which a sidewall protector (12) can be formed and a separate plate assembly (29,31) which is moveable toward the rigid mold to form the mounting holes (10), central opening 11, and a pair of annular ribs (14,16) on opposite sides of the sidewall protector. Movement of the plate (32) is done by a plurality of springs (47) each positioned between the plate (32) and an enlarged head portion (48) of a pin (46). The springs are compressed by a linear actuator (43) and the pin (46) is connected to the mold (19) by a dowel (54) inserted through a hole (53) in the pin (46) to maintain the compression on the springs (47).Type: GrantFiled: December 17, 1979Date of Patent: January 27, 1981Assignee: Caterpillar Tractor Co.Inventors: Richard W. Kizer, Arlynn W. Anderson, Robert W. Untz
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Patent number: 3964949Abstract: A method of treading or re-treading tires involves compression of the wearing surface of the tread. A tread strip, which may be an annular band, is compressed in a direction parallel to its longitudinal axis and is bonded to a tire carcass, while being maintained under compression. This may be done by compressing a tread band into an undersized mould; apparatus for assisting this is also described. Alternatively, the tread strip may be of finite length, for example to form a lug, in which case the strip is formed with a radius of curvature less that of the surface to which it is to be applied, so that the convex (wearing) surface of the strip is compressed upon application to the carcass.Type: GrantFiled: August 30, 1974Date of Patent: June 22, 1976Assignee: Kentredder LimitedInventors: Peter Jan Kent, John Eric Phillips, Jan Herbert Farquharson Kent