Flipper Strips Patents (Class 152/542)
-
Publication number: 20020026975Abstract: A tire for vehicle wheels includes a carcass, a tread strip, and a belt structure. The carcass has a central crown portion and two axially opposite sidewalls terminating in a pair of beads. Each bead includes at least one circumferentially unextendable annular reinforcing core having a series of spirals of metal wire radially superimposed and axially arranged alongside each other. The carcass has a reinforcing structure including at least one ply of rubberized fabric reinforced with metal cords lying in radial planes containing an axis of rotation of the tire. The reinforcing structure includes ends secured to the annular reinforcing cores and a neutral profile, lying in a radial cross-sectional plane, axially extending from bead to bead. The neutral profile intersects a cross section of a zone enclosing the annular reinforcing cores and has a continuous curvature devoid of inflection points along an extension between the beads.Type: ApplicationFiled: June 6, 2001Publication date: March 7, 2002Inventor: Renato Caretta
-
Patent number: 6328084Abstract: The carcass structure of a tire comprises one or more carcass plies each formed of strip lengths comprising longitudinal thread elements incorporated in a layer of elastomer material. The strip elements have respective crown portions disposed circumferentially in mutual side-by-side relationship, and side portions extending radially at the tire sidewalls. The side portions of each carcass ply are each at least partly covered with at least one of the side portions belonging to an adjacent deposition length. Associated with the carcass plies are annular structures comprising a pair of inextensible inserts in the form of an annulus which are anchored to the first and second carcass plies respectively and axially separated by an elastomeric filling body. A belt structure, a tread band, and sidewalls are combined with the carcass structure to define the tire.Type: GrantFiled: December 29, 1998Date of Patent: December 11, 2001Assignee: Pirelli Pneumatici S.p.A.Inventors: Renato Caretta, Maurizio Marchini
-
Patent number: 6257291Abstract: Reinforcing fabric for articles made from elastomeric material, particularly for pneumatic tires, comprising a plurality of filamentary elements having at least tensile strength, parallel and adjacent to each other in a plane, lying in a predetermined direction. The reinforcing elements, preferably cords, are incorporated in an elastomeric material and constitute at most the 40% of the volume of the fabric.Type: GrantFiled: October 6, 1998Date of Patent: July 10, 2001Assignee: Pirelli Coordinamento Pneumatici S.p.A.Inventors: Maurizio Boiocchi, Gurdev Orjela
-
Patent number: 6142205Abstract: A tire 10 has a composite ply 40. The composite ply 40 has a primary ply 40A reinforced with parallel inextensible cords 41 and a pair of ply extensions 40B having synthetic cords. The method of manufacturing the tire 10 is described. The tire 10 can be made as a runflat type tire.Type: GrantFiled: May 29, 1998Date of Patent: November 7, 2000Assignee: The Goodyear Tire & Rubber CompanyInventors: John Janes Beck, Jr., Gary Edwin Tubb, John Ronald Abbott, Samuel Patrick Landers, Amit Prakash, Frederick Forbes Vannan, Jr., Henry David Broyles, Klaus Beer
-
Patent number: 6135181Abstract: A pneumatic tire (10) has a pair of sidewall portions (20), a pair of bead regions (22) and a carcass (30) reinforced with at least two sidewall fillers or inserts (42), (46) for each sidewall portion and at least one cord reinforced ply (38) and two bead cores (26) one in each bead region and a reinforcing belt structure (36). This tire is preferably a runflat radial ply tire. The at least one cord reinforced ply (38) has a pair of turnup ends (32) wrapped around the pair of bead cores (26). The turnup ends (32) each extend radially outwardly to a terminal end (33) at a radial height of at least 40% of the tire section height (SH). The first insert for each sidewall portion lies radially inward and adjacent the at least one ply (38). The second insert (46) for each sidewall portion is a bead filler insert radially above the bead core (26) and between the at least one ply (38) and its turnup end (32).Type: GrantFiled: September 16, 1998Date of Patent: October 24, 2000Assignee: The Goodyear Tire & Rubber CompanyInventors: Anthony Curtis Paonessa, Mark Henry Seloover, John Janes Beck, Jr., Thomas Reed Oare, Joseph Ghana Dancy
-
Patent number: 6082423Abstract: A very light weight tire 10 has at least one radial ply 38 and a rayon belt structure 36, having two single cut belt layers 50, 51 covered by an overlay 59 having cords 80 selected from the group of aramid, rayon, PEN, PET and PVA. The tire 10 has a very thin or reduced gauge (t) undertead 13. The tire 10 can be made having very low rolling resistance due to the combination of casing structure and the reduced rubber mass.Type: GrantFiled: June 9, 1997Date of Patent: July 4, 2000Assignee: The Goodyear Tire & Rubber CompanyInventors: Alain Emile Francois Roesgen, Atte Smits, Marie-Rita Catherine Amelie Thise-Fourgon, Eric Gerard Marie Packbier, David Paterson Craig
-
Patent number: 6016857Abstract: A very light weight tire 10 has at least one radial ply 38 and a aramid belt structure 36, having two single cut belt layers 50,51 covered by an overlay 59 having cords 80 selected from the group of aramid, rayon, PEN, PET and PVA. The tire 10 has a very thin or reduced gauge (t) undertead 13. The tire 10 can be made having very low rolling resistance due to the combination of casing structure and the reduced rubber mass.Type: GrantFiled: June 9, 1997Date of Patent: January 25, 2000Assignee: The Goodyear Tire & Rubber CompanyInventors: Alain Emile Francois Roesgen, Atte Smits, Marie-Rita Catherine Amelie Thise-Fourgon, Eric Gerard Marie Packbier, David Paterson Craig
-
Patent number: 6016858Abstract: A very light weight tire 10 has at least one radial ply 38 and a fiberglass belt structure 36 covered by an overlay 59 having cords 80 selected from the group of aramid, rayon, PEN, PET and PVA. The tire 10 has a very thin or reduced gauge (t) undertead 13. The tire 10 can be made having very low rolling resistance due to the combination of casing structure and the reduced rubber mass.Type: GrantFiled: June 9, 1997Date of Patent: January 25, 2000Assignee: The Goodyear Tire & Rubber CompanyInventors: Alain Emile Francois Roesgen, Atte Smits, Marie-Rita Catherine Amelie Thise-Fourgon, Eric Gerard Marie Packbier, David Paterson Craig
-
Patent number: 5968296Abstract: A tire for mounting on rim with hump in which each bead:a) contains a main wire, around which the carcass fabric is wound, and a secondary wire placed outside the carcass fabric;b) the inner diameter of the main wire after mounting on the rim is greater than the diameter of the top of the hump, and its maximum elastic elongation is at most equal to 1.5%;c) before mounting on the rim, the outer diameter of the secondary wire is less than the inner diameter of the main wire; after mounting on the rim, the inner diameter of the secondary wire is less than the diameter of the top of the hump; the inner diameter of the secondary wire after mounting on the rim is 1.5 to 3% greater than the inner diameter of the secondary wire before mounting on the rim and the maximum elastic elongation of the secondary wire is at least 3%.Type: GrantFiled: May 28, 1998Date of Patent: October 19, 1999Assignee: Compagnie Generale des Etablissements Michelin - Michelin & CieInventor: Michel Ahouanto
-
Patent number: 5961756Abstract: Each bead of a pneumatic tire has the following characteristics:a) it has no bead wire and has an annular element whose tensile strength is ppreciably less than that necessary for a bead wire;b) at least two reinforcing plies are placed in contact with or near this annular element;c) the combination of reinforcing plies has a tensile strength at least equal to that which would be necessary for a bead wire;d) the carcass ply is wrapped around the annular element;e) the outer region of the bead includes a rubber having an elastic loss modulus G" of less than 1 MPa and/or it includes a rubber whose thickness is at most equal to 2 mm.Type: GrantFiled: July 31, 1997Date of Patent: October 5, 1999Assignee: Compagnie Generale des Etablissements Michelin-Michelin & CieInventors: Michel Ahouanto, Claude Eynard, Andre Peyrot
-
Patent number: 5958163Abstract: A pneumatic radial tire includes a carcass ply formed from one radial cord layer, a belt and tread disposed at a crown portion radial direction outer side of the carcass ply, and bead fillers and bead reinforcing layers disposed at the bead portions, wherein the carcass ply is formed from a carcass ply main body extending from one bead portion to another, and carcass ply turn-over portions wound about bead cores and extending toward radial direction outer sides. The bead filler is interposed between the carcass ply main body and the carcass ply turn-over portion, and tapers from directly above the bead core toward a radial direction outer side. The bead reinforcing layer is interposed between the carcass ply main body and the bead filler. An upper end of the bead reinforcing layer extends along the carcass ply main body to a position at 30 to 80% of a tire cross-sectional height, and is disposed further toward a radial direction outer side than an upper end of the bead filler.Type: GrantFiled: May 27, 1997Date of Patent: September 28, 1999Assignee: Bridgestone CorporationInventor: Teruhiko Kojima
-
Patent number: 5871602Abstract: A pneumatic tire 10 has a pair of sidewall portions 20, a pair of bead regions 22 and a carcass 30 reinforced with at least two sidewall fillers or inserts 42, 46 for each sidewall portion and at least one cord reinforced ply 38 and two bead cores 26 one in each bead region and a reinforcing belt structure 36. This tire is preferably a runflat radial ply tire. The at least one cord reinforced ply 38 has a pair of turnup ends 32 wrapped around the pair of bead cores 26. The turnup ends 32 each extend radially outwardly to a terminal end 33 located under the reinforcing belt structure 36. The first insert 42 for each sidewall portion lies radially inward and adjacent the at least one ply 38. The second insert 46 for each sidewall portion is radially between the at least one ply 38 and its turnup end 32.Type: GrantFiled: May 29, 1997Date of Patent: February 16, 1999Assignee: The Goodyear Tire & Rubber CompanyInventors: Anthony Curtis Paonessa, Mark Henry Seloover, John Janes Beck, Jr., Thomas Reed Oare, Joseph Ghana Dancy
-
Patent number: 5871600Abstract: A runflat radial ply pneumatic tire 10 has a carcass 30 which has a pair of sidewalls 20, each sidewall being reinforced with at least two sidewall fillers or runflat inserts 42, 46 and at least two cord reinforced plies 38, 40 and a bead core 26. The tire has one or more reinforcing belts 36. Each sidewall has at least one ply 38 or 40 reinforced with cords, the cords have a modulus E of X, X being at least 10 GPa. At least one ply has a turnup end 32 wrapped around the bead core 26. A second ply 38 or 40 is reinforced with substantially inextensible cords having a modulus E greater than X of the cords of the other ply. The second ply 38 or 40 is spaced from the first ply 38 or 40 by the second filler or runflat insert in the sidewall 20.Type: GrantFiled: May 29, 1997Date of Patent: February 16, 1999Assignee: The Goodyear Tire & Rubber CompanyInventors: Thomas Reed Oare, Amit Prakash, Robert Edward Hall, Gary Edwin Tubb
-
Patent number: 5855703Abstract: A pneumatic tire comprises various tire components each comprised of a rubber-coated layer containing a given number of reinforcing elements. In at least one of these rubber-coated layers, not less than 30% of all reinforcing elements are divided into plural groups each comprised of a combination of m-steps and n-rows viewing in a thickness direction of the rubber-coated layer, in which each of m and n is an integer of 2 or more representing the number of the reinforcing elements, and a distance between mutually adjacent and opposite reinforcing elements not grouped with each other is wider than a distance between mutually adjacent reinforcing elements in the group.Type: GrantFiled: April 10, 1996Date of Patent: January 5, 1999Assignee: Bridgestone CorporationInventors: Toshiya Miyazono, Yoichi Okamoto
-
Patent number: 5851324Abstract: A radial ply pneumatic tire has a carcass with a bead portion, a carcass reinforcing structure, and a bead filler. The carcass reinforcing structure has at least two plies. The turnup ends of a first or a second ply are wrapped about each bead and terminates in radial proximity of the maximum section width of the tire. In a preferred embodiment of the invention, the tire carcass includes elastomeric first and second filers the first filler being located between the first ply and the innerliner of the tire, and the second filer being located between the first and second ply. The fillers stiffen the sidewalls to permit the tire to be driven while uninflated. The tire may further include an aramid overlay radially outwardly of the reinforcing belt.Type: GrantFiled: May 6, 1994Date of Patent: December 22, 1998Assignee: The Goodyear Tire & Rubber CompanyInventors: Thomas Reed Oare, Randall Raymond Brayer, Jeffrey Wayne Kahrs, Beale Anthony Robinson, Keith Carl Trares, Raymond Dean Mc Quate
-
Patent number: 5849117Abstract: A tire has a radial carcass reinforcement which is anchored in each bead to a bead ring, going from the outside to the inside, forming a turn-up which is substantially parallel to the generatrix of the rim seat J on which the bead is mounted. Each turn-up is reinforced by at least one additional reinforcing ply of cords oriented at an angle between 0.degree. and 20.degree. with respect to the circumferential direction.Type: GrantFiled: May 29, 1997Date of Patent: December 15, 1998Assignee: Compagnie Generale des Etablissements Michelin-Michelin & CieInventor: Jean Billieres
-
Patent number: 5824171Abstract: A tire component used in a pneumatic radial tire is a rubber-coated layer comprised of a given number of reinforcing elements separately arranged in parallel with each other, in which the reinforcing elements corresponding to at least 30% of all reinforcing elements included in the rubber-coated layer are divided into plural groups, and a distance between mutually adjoining and opposite reinforcing elements not grouped with each other is wider than a distance between mutually adjoining reinforcing elements separately arranged at equal spaces in the group. Thus, the occurrence of cracking at cut ends of the reinforcing elements is prevented to improve the tire durability.Type: GrantFiled: January 7, 1997Date of Patent: October 20, 1998Assignee: Bridgestone CorporationInventors: Toshiya Miyazono, Yoshihide Kohno, Hiroyuki Koseki, Yoichi Okamoto
-
Patent number: 5769982Abstract: An airplane tire, inflated to a high pressure, with radial carcass reinfoment (1), comprising at least two axially inner plies (1A, 1B, 1C) of textile cords, wound around a bead wire (3) in each bead from the inside to the outside, forming turn-ups (10A, 10B, 10C), and at least one axially outer ply (1D, 1E) of textile cords extending along the turn-ups (10A, 10B, 10C), said bead wire (3) being radially surmounted by a filler (4) of height D with respect to a reference line XX' and also comprising at least one inner flipper (5) having two legs (5I) and (5E), characterized by the fact that the end of the axially outer leg (5E) of the inner flipper (5) and the end of the turn-up (10A) of the inner carcass ply (1A) which is arranged axially furthest towards the inside are located at radial distances L.sub.E and H.sub.Type: GrantFiled: July 12, 1996Date of Patent: June 23, 1998Assignee: Compagnie Generale des Etablissements Michelin--Michelin & CieInventor: Pierre De Loze de Plaisanc
-
Patent number: 5688345Abstract: In a tire having an aspect ratio H/S of less than 0.8 the radial carcass nforcement (1) is wound in each bead (B) around an anchoring bead ring (2) going from the outside to the inside to form a turn-up (10), the turn-up being located on the inside of an angle .alpha., open axially towards the inside and radially towards the outside of at most 45.degree. and defined by two straight lines OD.sub.1 and OD.sub.2 tangent to the circle circumscribed around the anchoring bead ring (2), the straight line closest to the axis of rotation of the tire being parallel to the axis.Type: GrantFiled: March 15, 1996Date of Patent: November 18, 1997Assignee: Compagnie Generale Des Etablisse-ments Michelin-Michelin & CieInventor: Jean Billieres
-
Patent number: 5639320Abstract: A radial ply pneumatic tire is described. The tire has a carcass with a bead portion, a carcass reinforcing structure, and a bead filler. The carcass reinforcing structure has at least two plies. The turnup ends of a first and second ply are wrapped about each bead. The turnup end of one of the plies terminates in radial proximity of the maximum section width of the tire. In a preferred embodiment of the invention, the tire carcass includes elastomeric first and second fillers the first filler being located between the first ply and the innerliner of the tire, and the second filler being located between the first and second ply. The fillers stiffen the sidewalls to permit the tire to be driven while uninflated. The tire may further include an aramid overlay radially outwardly of the reinforcing belt.Type: GrantFiled: May 6, 1994Date of Patent: June 17, 1997Inventors: Thomas Reed Oare, Randall Raymond Brayer, Jeffrey Wayne Kahrs, Beale Anthony Robinson, Keith Carl Trares, Raymond Dean Mc Quate
-
Patent number: 5626698Abstract: A pneumatic radial tire comprises a pair of bead cores, at least one radial carcass ply comprised of a main body and a turnup portion, and a stiffener arranged between the main body and each turnup portion wound around each bead core, in which each stiffener is composed of first, second and third stiffener members, and a boundary surface X between the first and second stiffener members is inclined outward in the radial direction so as to approach to the main body and a boundary surface Y between the second and third stiffener members is inclined outward in the radial direction so as to separate away from the main body, and a ply end rubber member made from rubber having a hardness between the hardnesses of the first and third stiffener members is arranged on an outer end region of the turnup portion in the radial direction.Type: GrantFiled: June 28, 1995Date of Patent: May 6, 1997Assignee: Bridgestone CorporationInventors: Makoto Tsuruta, Yasutoshi Aoki
-
Patent number: 5529104Abstract: The present invention relates to the field of tires having reinforced sidlls. In order to improve the high-speed performance of a tire and reduce the extent of vibration of the sidewalls (1) and effectively transmit a torque from the wheel to the ground via the tire, the rigidity of the sidewalls of the tire is adjusted by the provision of reinforcements (6) in the form of assembly sections oriented in circumferential direction. Said assembly sections are of short length as compared with the development of the tire measured at the point S of the tire which is located furthest radially to the outside.Type: GrantFiled: April 10, 1995Date of Patent: June 25, 1996Assignee: Compagnie Generale des Etablissements Michelin - Michelin & CieInventors: Alain Delias, Francois Doremieux
-
Patent number: 5529107Abstract: A pneumatic radial tire having a tread portion, a pair of axially spaced bead portions with a bead core, a pair of sidewall portions, a carcass having a carcass ply of radially arranged cords extending between the bead portions and turned up around the bead cores to form a main portion and two turned up portions, and a bead apex disposed between the main portion and each turned up portion in each bead portion and extending radially outwardly from the bead core, the carcass cords made of twisted organic fiber filaments, the twist number being more than 5 and less than 30 turn/10 cm.Type: GrantFiled: November 7, 1994Date of Patent: June 25, 1996Assignee: Sumitomo Rubber Industries, Ltd.Inventor: Wako Iwamura
-
Patent number: 5522443Abstract: A pneumatic tire for high speed and heavy duty use, in which durability of the bead and lower sidewall region is improved. The tire includes: a carcass comprising a radial ply of cords turned up around bead cores from the axially inside to the outside, the carcass cords rubberized with a topping rubber having a 100% modulus of 40 to 70 kg/cm.sup.2, an elongation at rupture of 200 to 350%, and a stress at rupture of 150 to 300 kg/cm.sup.Type: GrantFiled: June 30, 1994Date of Patent: June 4, 1996Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Kiyoshi Ueyoko, Hiroshi Hoshino, Mikio Takatsu
-
Patent number: 5479977Abstract: A pneumatic tire having an improved carcass structure capable of increasing the sidewall rigidity, the tire (1) comprising a carcass (8) composed of an inner carcass ply (9) and an outer carcass ply (10), the inner carcass ply having a pair of edges turned up around the bead cores (5) from the axially inside to outside of the tire, each turned up portion thereof extending radially outwardly beyond the maximum tire width point (B), a bead apex (6) disposed between the main portion and the turned up portion, the outer carcass ply having a pair of edges each disposed between the bead apex and each turned up portion of the inner carcass ply, the edges of the outer carcass ply terminated radially outward of the radially inner end of the bead core, each sidewall portion provided with at least one steel cord reinforcing layer (11a, 11b, 11c) made of parallel steel cords.Type: GrantFiled: October 26, 1993Date of Patent: January 2, 1996Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Akiyoshi Tamano, Motoo Hayashi, Kiyonori Sasaoka, Kazuya Suzuki, Hirotsugu Hasegawa
-
Patent number: 5431209Abstract: A passenger radial tire which comprises a tread portion, a pair of axially spaced bead portions, a pair of sidewall portions extending therebetween, a pair of bead cores disposed one in each bead portion, and a carcass extending between the bead portions and turned up around the bead cores from the axially inside to the outside thereof to form two turned up portions and one main portion therebetween, wherein in at least the sidewall portions no bead apex exists to thereby the carcass turned up portions are located adjacently to the carcass main portion, and in each bead portion a bead reinforcement extending radially outwardly into the sidewall portion is disposed.Type: GrantFiled: June 26, 1991Date of Patent: July 11, 1995Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Shinzo Kajiwara, Hideaki Yoshikawa, Hideaki Sugihara, Masayuki Sakamoto
-
Patent number: 5415216Abstract: A passenger radial tire which comprises a tread portion, a pair of axially spaced bead portions, a pair of sidewall portions extending therebetween, a pair of bead cores disposed one in each bead portion, and a carcass extending between the bead portions and turned up around the bead cores from the axially inside to the outside thereof to form two turned up portions and one main portion therebetween, wherein in at least the sidewall portions no bead apex exists and the carcass turned up portions are located adjacently to the carcass man portion, and in each bead portion a bead reinforcement extending radially outwardly into the sidewall portion is disposed.Type: GrantFiled: February 1, 1993Date of Patent: May 16, 1995Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Shinzo Kajiwara, Hideaki Yoshikawa, Hideaki Sugihara, Masayuki Sakamoto
-
Patent number: 5411068Abstract: A pneumatic radial tire in which a tread weight .alpha. per unit ground contact area is selected to be not greater than 1.80.times.10.sup.-3 kg/cm.sup.2, a cord reinforcing ply which extends up to a location outside of a top end of a bead filler in a radial direction of the tire is disposed in a bead portion and a cord angle .theta. of the cord reinforcing ply relative to a circumferential direction of the tire is selected to be 25.degree.-80.degree., a height RH of the cord reinforcing ply from a rim base up to the top end of the cord reinforcing ply, which is measured in the radial direction of the tire, is selected to satisfy the ratio, RH/SH=0.28-0.65, with SH being a cross-sectional height of the tire, and a height FH of the bead filler from the rim base up to the top end of the bead filler, which is measured in the radial direction of the tire, is selected to satisfy the ratio, FH/SH=0.11-0.28, with SH being the cross-sectional height of the tire.Type: GrantFiled: June 15, 1993Date of Patent: May 2, 1995Assignee: The Yokohama Rubber Co., Ltd.Inventor: Tomohiko Kogure
-
Patent number: 5379819Abstract: The invention is directed to a pneumatic tire which comprises a carcass turned up around bead cores from axially inward to outward thereof to form two turned up portions and one main portion therebetween, the carcass turned up portions extending radially outwardly along and adjacently to the carcass main portion from the bead portion to a position not lower than a 1/2 height of the tire section height, an axially inner reinforcing layer disposed axially inside the carcass main portion, and an axially outer reinforcing layer disposed between the carcass main portion and each turned up portion, the inner reinforcing layer comprising one ply of high modulus cords laid at 15 to 50 degrees with respect to the tire axis and extending along the inner face of the carcass at least from a 1/4 height of the tire section height to the bead portion, the outer reinforcing layer comprising two cross plies of high modulus cords laid at 30 to 60 degrees with respect to the tire circumferential direction, and the cord spacingType: GrantFiled: November 26, 1991Date of Patent: January 10, 1995Assignee: Sumitomo Rubber Industries, Ltd.Inventor: Yukishige Adachi
-
Patent number: 5323830Abstract: In order to remedy the drawbacks consisting of separations at the end of upturns (50) of the carcass reinforcement (1) of a tire having frustoconical seats as well as the rapid wear of the bead protectors, said tire is provided with beads (B) each of which has an auxiliary bead ring (4) located in the part intended to cover the tire flange (13), a reinforcement ply (5) being wound around the bead ring (4) in order to form two layers (51) and (52) which extend to the tip (6) of the bead (B).Type: GrantFiled: December 17, 1992Date of Patent: June 28, 1994Assignee: Compagnie Generale des Etablissements Michelin - Michelin & CieInventor: Christian Diernaz
-
Patent number: 5309971Abstract: A tire includes a pair of axially spaced apart beads. A carcass ply extends between and is secured at axially opposite end portions to a respective one of the beads. A pair of bead fillers is also included. Each of the bead fillers is located radially outward of a respective bead. A flipper partially envelopes the bead and further engages and replaces a part of the bead filler. The flipper further includes a plurality of parallel extending reinforcing members. The flipper has a central portion located radially inward of the bead and a pair of leg portions. Each of the pair of leg portions extends radially outwardly from a bead reference. The radial extent of the leg portions is greater than a flange distance, being the radial extent of a flange of a rim, but less than the radial extent of an apex of the bead filler when the tire is properly mounted on the rim. The carcass ply turnup extends radially to approximately the height of the rim flange.Type: GrantFiled: June 12, 1992Date of Patent: May 10, 1994Assignee: Michelin Recherche et Technique S.A.Inventors: William C. Baker, Damon L. Christenbury
-
Patent number: 5111865Abstract: A tire and rim combination comprising a carcass turned up around bead cores from the axially inside to the outside thereof to form turned up portions; bead filler ply disposed between the carcass and each bead core and having an axially inner portion and an outer portion; and a chafer having a main portion extending along the bottom of the bead and an outside portion extending radially outwardly from the main portion along the axially outside the carcass turned up portion,the height F of the edge of the outer portion of the bead filler ply,the height P of the edge of the turned up portion of the carcass,the height C of the edge of the outside portion of the chafer,and the height A of the edge of a flange of said rim for the tire, the heights F. P, C and A being the height from the bead base, respectively, and satisfying the following conditions:0.8.ltoreq.C/A<10.64.ltoreq.P/A<0.80.4.ltoreq.Type: GrantFiled: August 4, 1989Date of Patent: May 12, 1992Assignee: Sumitomo Rubber Industries, Ltd.Inventor: Yasushi Shinmura
-
Patent number: 5033524Abstract: A tire for a large vehicle includes bead portions having bead cores around which a carcass ply layer is turned up from an inside to an outside of the tire. The tire includes a first elastomer protective layer A, a second elastomer protective layer B and a third elastomer protective layer C. These protective layers A, B and C have dynamic storage moduli E' A: 7-20.times.10.sup.7 (dyn/cm.sup.2), B: 10-25.times.10.sup.7 (dyn/cm.sup.2) and C: 2-10.times.10.sup.7 (dyn/cm.sup.2) and relations of the dynamic storage moduli in B>A>C, B-A>2.times.10.sup.7 and A-C>2.times.10.sup.7, and have loss tangents .delta. A: 0.15-0.22, B: 0.18-0.25 and C: 0.05-0.16 and a relation of loss tangents in B>A>C.Type: GrantFiled: August 17, 1989Date of Patent: July 23, 1991Assignee: Bridgestone CorporationInventor: Junichi Ohtsuka
-
Patent number: 4782880Abstract: A high performance passenger tire features improved bead assemblies. The bead assemblies include a split ply formed of two short insert plies of rubberized steel cords bent around the bead cores with their inside ends extending radially outwardly from the bead cores a distance greater than the distance from their outside ends to the bead cores. The cords of the insert plies form low angles with respect to the circumferential center line of said tire. The bead assemblies have extended utility when utilized in high performance belted radial pneumatic tires.Type: GrantFiled: September 24, 1987Date of Patent: November 8, 1988Assignee: The Uniroyal Goodrich Tire CompanyInventor: Paul C. Staab
-
Patent number: 4735249Abstract: A pneumatic radial passenger-car tire comprising a carbon fiber cord layer disposed between a carcass layer on the side of an inner liner and a bead filler all along the circumference of the tire, and having a height thereof between a bead heel and the top end thereof equal to or larger than the height of the bead filler between the bead heel and the top end thereof.Type: GrantFiled: May 20, 1986Date of Patent: April 5, 1988Assignee: The Yokohama Rubber Co., Ltd.Inventors: Kazuyuki Kabe, Tuneo Morikawa, Shuji Takahashi
-
Patent number: 4726408Abstract: The invention relates to a pneumatic radial carcass type tire for heavy duty use having an improved reinforcing structure for the bead region. In a tire comprising a four ply radial carcass (1), the two bead regions are each reinforced by a bead core (2) and an axially inner (6) and an axially outer (7) textile reinforcing layer and a rubber apex strip (8). As compared to the prior art, the relatively low rubber apex strip (8) and the resulting low separation point between the first (3) and second (4) set of carcass plies reduces the sheer stresses between these carcass plies while the specific arrangement of the axially inner (6) and axially outer (7) reinforcing layers retains the required stiffness in the bead region (5). A particular durable bead region (5) is thus obtained.Type: GrantFiled: June 1, 1987Date of Patent: February 23, 1988Assignee: The Goodyear Tire & Rubber CompanyInventors: Jean-Claude Alie, Romain Geisen, Andre Lamock
-
Patent number: 4714099Abstract: A pneumatic tire (T) having bead portions reinforced by a respective bead core (18) (19) and a bead reinforcing ply (15) (16). The reinforcing plies have cords (21) therein that are substantially parallel to each other and are arranged so that the cords (21) in one reinforcing ply (15) are substantially parallel to the cords (21) in the other ply (16). A direction mark (23) is located on an external surface of the tire to show the direction of the reinforcing cords (21) in relation to the rotational direction of the tire. When such tires are mounted on the axle unit they may be arranged so that the direction marks are pointed all in the same rotational direction.Type: GrantFiled: March 31, 1986Date of Patent: December 22, 1987Assignee: Apsley Metals LimitedInventor: James N. McGlashen
-
Patent number: 4700765Abstract: The pneumatic tire is designed particularly to counteract unwedging of the tire. It is mountable on a rim having a protrusion (referred to as "hump") of ordinary shape. The bead has two bead rings, one of which is close to the bead tip while the other assures the blocking of the former in case of strong axial forces, which permits the bead tip to cooperate more effectively with the hump of the rim.Type: GrantFiled: July 11, 1985Date of Patent: October 20, 1987Assignee: Compagnie Generale des Etablissements MichelinInventor: Pierre Masclaux
-
Patent number: 4534393Abstract: The side wall (5) of a pneumatic tire comprises an at least double encirculating multi-layer winding (9, 12) which is joined in an interlacing manner with the laterally adjacent winding (9, 12) by means of staggered layers (10, 11, 13, 14).Type: GrantFiled: June 7, 1984Date of Patent: August 13, 1985Assignee: Bayer AktiengesellschaftInventors: Jakob Ippen, Friedel Stuttgen