US20050189056A1 - Wheel and tire assembly having a bead seat angle in the range of 10 degree to 12 degree - Google Patents
Wheel and tire assembly having a bead seat angle in the range of 10 degree to 12 degree Download PDFInfo
- Publication number
- US20050189056A1 US20050189056A1 US10/626,906 US62690603A US2005189056A1 US 20050189056 A1 US20050189056 A1 US 20050189056A1 US 62690603 A US62690603 A US 62690603A US 2005189056 A1 US2005189056 A1 US 2005189056A1
- Authority
- US
- United States
- Prior art keywords
- tire
- bead
- rim
- carcass
- support surfaces
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000011324 bead Substances 0.000 title claims abstract description 83
- 238000007789 sealing Methods 0.000 claims description 12
- 230000000295 complement effect Effects 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 abstract description 4
- 238000005096 rolling process Methods 0.000 abstract description 3
- 239000007787 solid Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B21/00—Rims
- B60B21/10—Rims characterised by the form of tyre-seat or flange, e.g. corrugated
- B60B21/104—Rims characterised by the form of tyre-seat or flange, e.g. corrugated the shape of flanges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B21/00—Rims
- B60B21/02—Rims characterised by transverse section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B21/00—Rims
- B60B21/02—Rims characterised by transverse section
- B60B21/026—Rims characterised by transverse section the shape of rim well
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B25/00—Rims built-up of several main parts ; Locking means for the rim parts
- B60B25/002—Rims split in circumferential direction
- B60B25/004—Rims split in circumferential direction one rim part comprising the wheel disc
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B25/00—Rims built-up of several main parts ; Locking means for the rim parts
- B60B25/22—Other apurtenances, e.g. for sealing the component parts enabling the use of tubeless tyres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C15/00—Tyre beads, e.g. ply turn-up or overlap
- B60C15/02—Seating or securing beads on rims
- B60C15/024—Bead contour, e.g. lips, grooves, or ribs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C3/00—Tyres characterised by the transverse section
- B60C3/04—Tyres characterised by the transverse section characterised by the relative dimensions of the section, e.g. low profile
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
- Y10T152/10279—Cushion
- Y10T152/10288—Sectional
- Y10T152/10297—Annular
- Y10T152/10306—Superimposed
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
- Y10T152/10495—Pneumatic tire or inner tube
- Y10T152/10819—Characterized by the structure of the bead portion of the tire
Definitions
- the present invention relates to vehicle wheels and tires and in particular to such wheels and tires used in off-highway vehicles.
- a well is provided in the central portion of the rim to accommodate a bead seat and allow the tire to be fed over the rim prior to inflation.
- a bead seat is provided and to be effective this must ensure an adequate interference between the tire and the wheel to effect a seal.
- the bead seat is formed with an inclination to the axis of rotation in the order of 5°. While this facilitates ease of installation, it does not effectively seal the tire particularly under the high lateral loads that may be encountered during normal use.
- An alternative configuration in general use has a 15° bead seat. This configuration is derived from a three-piece wheel in which tire mounting is facilitated. However, with a single piece wheel, a 15° bead seat angle is difficult to mount and does not offer good retention.
- the present invention provides a tire for a vehicle that has a pair of annular beads laterally spaced apart along the axis of rotation.
- a plurality of plies extends between the beads to define a carcass having a pair of radially extending sidewalls and a tread portion.
- An elastomeric cap covers the carcass and extends across each of the sidewalls and the tread portion.
- the plies extends about the beads to provide an inwardly directly bead seat for sealing against a rim.
- the bead seat has a substantially frustoconical inwardly directed sealing surface inclined to the axis of rotation at an angle of between 10° and 12°.
- the carcass has a radial spacing between the sealing surface and the radially outer surface of the cap that is less than or equal to 60% of the maximum width of the carcass in a free body state.
- a wheel rim for a vehicle.
- the rim has a circumferential well with a base and a pair of upstanding sidewalls.
- a pair of lateral extensions project from respective ones of the sidewalls to a pair of bead support surfaces.
- Each of the bead support surfaces is frustoconical with an included angle of between 20° and 24°.
- the bead support surfaces terminate at laterally outer edges in upstanding flanges directed to an opposite side of the lateral extensions to the well.
- a still further aspect of the invention provides a vehicle wheel assembly having a rim and a tire mounted on the rim.
- the rim has a centrally disposed well and a frustoconical bead support surface to either side.
- the bead support surfaces have an included cone angle of between 10° and 12°.
- the bead support surfaces terminates in an upstanding flange overlapping a radially inner portion of the tire.
- the tire includes a pair of annular beads, each associated with a respective one of the bead seats.
- a plurality of plies extends between the beads to define a carcass having a pair of radially extending sidewalls and a tread portion.
- An elastomeric cap covers the carcass and extends across each of the sidewalls and the tread portion.
- the plies extend about the beads to provide an inwardly directed bead seat for engagement with the bead support surfaces.
- the bead seat has a substantially frustoconical inwardly directed sealing surface complementary to the bead support surfaces.
- the carcass has a radial spacing between the sealing surface and a radially outer surface of the cap that is less than or equal to 60% of a maximum width of the carcass in a free body state.
- FIG. 1 is a section through a vehicle wheel assembly.
- FIG. 2 is a section through an alternative embodiment of rim configuration.
- FIG. 3 is a section, similar to FIG. 2 of a solid tire configuration.
- a vehicle wheel assembly generally designated 10 includes a tire 12 mounted upon a wheel 14 .
- the wheel 14 has a wheel disc 16 secured to a hub of a vehicle for rotation about an axis generally indicated at 18 and a rim 20 .
- the rim 20 is rolled out of steel and includes a centrally-disposed well 22 having a base 24 and a pair of sidewalls 26 .
- Each of the sidewalls 26 smoothly merges with lateral extensions 28 which connect the sidewalls 26 to bead support portions 30 .
- Each of the bead support portions 30 terminates in a flange 32 that projects radially outwardly on the opposite side of the extensions 28 to the well 22 .
- the bead support portions 30 are frustoconical having an included angle in the preferred embodiment of 22°. Included angles in the range of 20° to 24° have been found satisfactory. Each bead support portion 30 is thus inclined at an angle of 11° to the axis of rotation 18 .
- the flange 32 is part circular in cross-section and defines a segment of approximately 135°.
- the radius of curvature of the flange 32 is greater than 0.5 inches and preferably is 0.75 inches.
- the height r of the flange 32 ie. the maximum radial spacing of the flange from the bead support portions 30 , is 0.75 inches.
- the tire 12 includes a pair of annular beads 40 which are wound from an inextensible wire or cord and have a generally diamond shape in cross-section.
- a carcass 42 is provided by plies 44 that extend between the beads 40 .
- the plies 44 extend about the bead 40 so as to conform generally to the cross-section of the bead 40 and present a radially inwardly directed frustoconical surface 46 to define a bead seat that is complementary to the bead support surface 30 .
- the carcass 42 is covered by an elastomeric cap 48 which extends axially over a crown and radially over sidewalls 52 of the carcass 42 .
- the cap. 48 terminates at shoulders 54 adjacent the flange 32 and projects axially outwardly to be co-extensive with the flange 32 .
- a tread 56 is formed in the radially outwardly directed surface of the cap 48 in the region of the crown 50 .
- the tire 12 has an aspect ratio defined as the height H of the tire 12 measured from the radially inner portion of the bead seat 46 to the radially outer portion of tread 56 and the width W measured at the widest lateral spacing of the sidewalls 52 .
- the aspect ratio is less than 60% and preferably less than 50% giving the width W of the tire twice that of the height H.
- the reduced aspect ratio decreases the bounce associated with conventional tires while still supporting the loads normally encountered with such vehicles. It is believed that this may be attributed to the increased stiffness of the sidewalls resulting from the reduced aspect ratio.
- the shoulder 54 is configured to abut the outer surface of flange 32 to inhibit inward rolling of the bead seat. This in combination with the bead seat angle of between 10° and 12° inhibits separation of the sealing surface 46 from the support surface 30 and the placing of the sidewalls in tension to support a portion of the load.
- the bead seat angle of 11° to the axis of rotation has surprisingly been found to maintain an effective seal while at the same time facilitating the installation of the tire on the rim.
- a wheel configuration of 10-20.5 was used with a 3 ⁇ 4 inch flange height.
- a tire having a 50% aspect ratio was mounted on the wheel.
- a bead seat angle of 11° was adopted. It was found that the bead was retained on the rim even with inflation pressures as low as 20 psi. In conventional tires, separation of the bead from the rim can be expected at pressures below 40 psi causing a deflation of the tire on the rim.
- the bead seat angle of 11° has thus enhanced the retention of the bead seat on the rim while facilitating installation.
- Bead seat angles in the range of 10° to 12° have been found satisfactory but 11° is preferred based upon experimental data to date.
- rim size and tire size are that normally used in the industry.
- a rim size of 8.5 ⁇ 20.5 indicates a width between the radial walls of the bead seats of 8.5 inches and a diameter of the bead seat of 20.5 inches.
- a tire size of 10-20.5 indicates a maximum width of tire indicated at W of 10 inches and a diameter of the bead seat of 20.5 inches.
- the tire size and aspect ratio is selected to provide an outside diameter for the tire corresponding to a conventional wheel tire combination and the rim size is selected to provide an increased rim diameter corresponding to the bead seat diameter.
- An 11° bead seat angle is used on each of the examples. A reduced bounce is obtained and the selection of bead seat angles maintains retention of the bead seat at reduced inflation pressures.
- FIG. 2 A further configuration of rim is shown in FIG. 2 in which like reference numerals will denoted with like components with the suffix a added for clarity.
- the rim 20 a is formed as a split rim having opposite halves 60 , 62 .
- the halves 60 , 62 are bolted to one another by bolt 64 with an O ring 66 trapped in a jog 68 between the two halves 60 , 62 .
- a guide 70 is secured to the one halve 60 to retain the O ring 66 in place.
- the other halve 62 is secured to a wheel disc 16 a radially inwardly of the connection of the two halves 60 , 62 .
- the split rim configuration facilities the assembly of the tire 12 with the bead seat 30 a inclined at between 10° to 12° degrees to facilitate the assembly of the tire 12 whilst retaining the torque transmitting requirements.
- the centrally disposed well 22 a may be reduced or eliminated as preferred.
- a split rim 20 a also facilitates the use of the preferred bead seat angles with solid tire configurations as shown in FIG. 3 in which like components will be denoted by like reference numerals with a suffix b added for clarity.
- the pneumatic tire 12 is replaced with a solid tire 12 b having an outer cap 80 , central resilient band 82 and a mounting band 84 .
- Steel reinforcing rings 86 are incorporated into the mounting band 84 , which is profiled to be complimentary to the inclined bead seat 30 b.
- the bead seats 30 b are inclined at between 10° and 12° as in previous embodiments to retain the enhanced torque transfer characteristics.
- the solid tire 12 b retains the aspect ratio of the pneumatic tire 12 to provide a lower rolling resistance and less rubber compound in the body of the tire.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
A wheel assembly includes a tire having bead seat angle in the range 10° to 12°, preferably 11°, and an aspect ratio of less than 60%. Reduced bounce and improved bead retention is obtained. The flange is curve and supports the sidewall of the tire in flexure to reduce rolling of the bead seat;
Description
- This application is a continuation in part of U.S. application Ser. No. 08/842,826.
- The present invention relates to vehicle wheels and tires and in particular to such wheels and tires used in off-highway vehicles.
- It is of course well known to provide a vehicle with a pneumatic tire mounted upon a wheel rim to support the mass of the vehicle. With off-road vehicles, such as construction equipment or material handling equipment, it is usual to use relatively large diameter wheels and large aspect ratios; that is, the ratio of the height of the tire to the width of the tire, to support the high loads normally encountered. In this manner, the tire may deflect to present a footprint capable of supporting the loads on the vehicle.
- One problem associated with such combinations of wheels and tires is the instability introduced at higher speeds, particularly during travel along paved highways. In those situations, the flexibility found in conventional tire construction causes bouncing of the tire and renders control of the vehicle difficult.
- In order to be commercially viable, it is necessary to be able to mount the tire to a one-piece rim using conventional tire installation equipment. For this purpose, a well is provided in the central portion of the rim to accommodate a bead seat and allow the tire to be fed over the rim prior to inflation. To seal the tire against the rim, a bead seat is provided and to be effective this must ensure an adequate interference between the tire and the wheel to effect a seal. Typically the bead seat is formed with an inclination to the axis of rotation in the order of 5°. While this facilitates ease of installation, it does not effectively seal the tire particularly under the high lateral loads that may be encountered during normal use. An alternative configuration in general use has a 15° bead seat. This configuration is derived from a three-piece wheel in which tire mounting is facilitated. However, with a single piece wheel, a 15° bead seat angle is difficult to mount and does not offer good retention.
- It is therefore an object of the present invention to provide the components of a vehicle wheel assembly that obviate or mitigate the above disadvantages.
- In general terms, the present invention provides a tire for a vehicle that has a pair of annular beads laterally spaced apart along the axis of rotation. A plurality of plies extends between the beads to define a carcass having a pair of radially extending sidewalls and a tread portion. An elastomeric cap covers the carcass and extends across each of the sidewalls and the tread portion. The plies extends about the beads to provide an inwardly directly bead seat for sealing against a rim. The bead seat has a substantially frustoconical inwardly directed sealing surface inclined to the axis of rotation at an angle of between 10° and 12°. The carcass has a radial spacing between the sealing surface and the radially outer surface of the cap that is less than or equal to 60% of the maximum width of the carcass in a free body state.
- In a further aspect of the invention, there is provided a wheel rim for a vehicle. The rim has a circumferential well with a base and a pair of upstanding sidewalls. A pair of lateral extensions project from respective ones of the sidewalls to a pair of bead support surfaces. Each of the bead support surfaces is frustoconical with an included angle of between 20° and 24°. The bead support surfaces terminate at laterally outer edges in upstanding flanges directed to an opposite side of the lateral extensions to the well.
- A still further aspect of the invention provides a vehicle wheel assembly having a rim and a tire mounted on the rim. The rim has a centrally disposed well and a frustoconical bead support surface to either side. The bead support surfaces have an included cone angle of between 10° and 12°. The bead support surfaces terminates in an upstanding flange overlapping a radially inner portion of the tire. The tire includes a pair of annular beads, each associated with a respective one of the bead seats. A plurality of plies extends between the beads to define a carcass having a pair of radially extending sidewalls and a tread portion. An elastomeric cap covers the carcass and extends across each of the sidewalls and the tread portion. The plies extend about the beads to provide an inwardly directed bead seat for engagement with the bead support surfaces. The bead seat has a substantially frustoconical inwardly directed sealing surface complementary to the bead support surfaces. The carcass has a radial spacing between the sealing surface and a radially outer surface of the cap that is less than or equal to 60% of a maximum width of the carcass in a free body state.
- Embodiments of the invention will now be described by way of example only with reference to the accompanying drawings, in which
-
FIG. 1 is a section through a vehicle wheel assembly. -
FIG. 2 is a section through an alternative embodiment of rim configuration. -
FIG. 3 is a section, similar toFIG. 2 of a solid tire configuration. - Referring therefore to
FIG. 1 , a vehicle wheel assembly generally designated 10 includes atire 12 mounted upon awheel 14. Thewheel 14 has awheel disc 16 secured to a hub of a vehicle for rotation about an axis generally indicated at 18 and arim 20. - The
rim 20 is rolled out of steel and includes a centrally-disposed well 22 having abase 24 and a pair ofsidewalls 26. Each of thesidewalls 26 smoothly merges withlateral extensions 28 which connect thesidewalls 26 to bead supportportions 30. Each of the bead supportportions 30 terminates in aflange 32 that projects radially outwardly on the opposite side of theextensions 28 to thewell 22. - The
bead support portions 30 are frustoconical having an included angle in the preferred embodiment of 22°. Included angles in the range of 20° to 24° have been found satisfactory. Eachbead support portion 30 is thus inclined at an angle of 11° to the axis ofrotation 18. - The
flange 32 is part circular in cross-section and defines a segment of approximately 135°. The radius of curvature of theflange 32 is greater than 0.5 inches and preferably is 0.75 inches. In the preferred embodiment, the height r of theflange 32, ie. the maximum radial spacing of the flange from the bead supportportions 30, is 0.75 inches. - The
tire 12 includes a pair ofannular beads 40 which are wound from an inextensible wire or cord and have a generally diamond shape in cross-section. Acarcass 42 is provided byplies 44 that extend between thebeads 40. Theplies 44 extend about thebead 40 so as to conform generally to the cross-section of thebead 40 and present a radially inwardly directedfrustoconical surface 46 to define a bead seat that is complementary to thebead support surface 30. - The
carcass 42 is covered by anelastomeric cap 48 which extends axially over a crown and radially oversidewalls 52 of thecarcass 42. The cap. 48 terminates atshoulders 54 adjacent theflange 32 and projects axially outwardly to be co-extensive with theflange 32. Atread 56 is formed in the radially outwardly directed surface of thecap 48 in the region of thecrown 50. - The
tire 12 has an aspect ratio defined as the height H of thetire 12 measured from the radially inner portion of thebead seat 46 to the radially outer portion oftread 56 and the width W measured at the widest lateral spacing of thesidewalls 52. The aspect ratio is less than 60% and preferably less than 50% giving the width W of the tire twice that of the height H. - In practice it has been found that the reduced aspect ratio decreases the bounce associated with conventional tires while still supporting the loads normally encountered with such vehicles. It is believed that this may be attributed to the increased stiffness of the sidewalls resulting from the reduced aspect ratio. Moreover, the
shoulder 54 is configured to abut the outer surface offlange 32 to inhibit inward rolling of the bead seat. This in combination with the bead seat angle of between 10° and 12° inhibits separation of the sealingsurface 46 from thesupport surface 30 and the placing of the sidewalls in tension to support a portion of the load. - The bead seat angle of 11° to the axis of rotation has surprisingly been found to maintain an effective seal while at the same time facilitating the installation of the tire on the rim. In tests conducted with a skid steer loader back hoe, a wheel configuration of 10-20.5 was used with a ¾ inch flange height. A tire having a 50% aspect ratio was mounted on the wheel. A bead seat angle of 11° was adopted. It was found that the bead was retained on the rim even with inflation pressures as low as 20 psi. In conventional tires, separation of the bead from the rim can be expected at pressures below 40 psi causing a deflation of the tire on the rim. The bead seat angle of 11° has thus enhanced the retention of the bead seat on the rim while facilitating installation.
- Bead seat angles in the range of 10° to 12° have been found satisfactory but 11° is preferred based upon experimental data to date.
- As shown in Table I below, different configurations of wheel and tire have been used to obtain the benefits noted above. The designation of rim size and tire size is that normally used in the industry. Thus, a rim size of 8.5×20.5 indicates a width between the radial walls of the bead seats of 8.5 inches and a diameter of the bead seat of 20.5 inches. Similarly, a tire size of 10-20.5 indicates a maximum width of tire indicated at W of 10 inches and a diameter of the bead seat of 20.5 inches.
TABLE I Rim Size Tire Size Aspect Ratio 8.5 × 20.5 10 × 20.5 48% 10 × 20.5 12 × 20.5 50% 13 × 33.5 14.9 × 33.5 54% 11 × 21.5 14 × 21.5 54% 17 × 32.5 19.5 × 32.5 47% 14 × 25.5 16.5 × 25.5 51% 12.5 × 23.5 15 × 23.5 54% 19 × 53.5 20.8 × 53.5 53% 15 × 37.5 16.9 × 37.5 61% 10 × 33.5 13 × 33.5 64% 22 × 39.5 26.5 × 39.5 59% 13 × 55.5 14.9 × 55.5 55% 10 × 21.5 12 × 21.5 46% 9 × 13.5 23 × 10.5-13 45% 9 × 13.5 25 × 12-13 50% - In each example, the tire size and aspect ratio is selected to provide an outside diameter for the tire corresponding to a conventional wheel tire combination and the rim size is selected to provide an increased rim diameter corresponding to the bead seat diameter. An 11° bead seat angle is used on each of the examples. A reduced bounce is obtained and the selection of bead seat angles maintains retention of the bead seat at reduced inflation pressures.
- It will be seen therefore that by utilizing a bead seat angle in the range of 10° to 12° and an aspect ratio of less than 60%, an improved performance for off-road tires has been attained.
- A further configuration of rim is shown in
FIG. 2 in which like reference numerals will denoted with like components with the suffix a added for clarity. As may be seen inFIG. 2 , therim 20 a is formed as a split rim havingopposite halves halves bolt 64 with anO ring 66 trapped in ajog 68 between the twohalves guide 70 is secured to the one halve 60 to retain theO ring 66 in place. Theother halve 62 is secured to awheel disc 16 a radially inwardly of the connection of the twohalves - The split rim configuration facilities the assembly of the
tire 12 with the bead seat 30 a inclined at between 10° to 12° degrees to facilitate the assembly of thetire 12 whilst retaining the torque transmitting requirements. With the configuration ofrim 20 a shown inFIG. 2 the centrally disposed well 22 a may be reduced or eliminated as preferred. - The utilization of a
split rim 20 a also facilitates the use of the preferred bead seat angles with solid tire configurations as shown inFIG. 3 in which like components will be denoted by like reference numerals with a suffix b added for clarity. In the embodiment ofFIG. 3 , thepneumatic tire 12 is replaced with asolid tire 12 b having anouter cap 80, centralresilient band 82 and a mountingband 84.Steel reinforcing rings 86 are incorporated into the mountingband 84, which is profiled to be complimentary to theinclined bead seat 30 b. The bead seats 30 b are inclined at between 10° and 12° as in previous embodiments to retain the enhanced torque transfer characteristics. Thesolid tire 12 b retains the aspect ratio of thepneumatic tire 12 to provide a lower rolling resistance and less rubber compound in the body of the tire. - Again the provision of the 10° to 12° degree bead seat angle facilitates assembly of the
solid tire 12 b on the twohalves
Claims (13)
1. A tire for a vehicle, said tire including a pair of annular beads laterally spaced along an axis of rotation of said tire, a plurality of plies extending between said beads to define a carcass having a pair of radially extending sidewalls and a tread portion, an elastomeric cap covering said-carcass and extending across each of said sidewalls and said tread portion, said plies extending about said beads to provide an inwardly directed bead seat for sealing against a rim, said bead seat having a substantially frustoconical inwardly directed sealing surface inclined to said axis of rotation at an angle in the range of 10° to 12° and said carcass having a radial spacing between said sealing surface and a radially outer surface of said cap that is less than or equal to 60% of a maximum width of said carcass in a free body state
2. A tire according to claim 1 wherein said sealing surface is inclined at an angle of 11°.
3. A tire according to claim 1 wherein said cap terminates along said sidewalls radially outwardly of said beads.
4. A tire according to claim 1 wherein a tread is formed on said cap.
5. A tire according to claim 2 wherein said radial spacing is less than or equal to one-half of said maximum width.
6. A wheel rim for a vehicle, said rim having a circumferential well with a based and a pair of upstanding sidewalls, a pair of lateral extensions projecting from respective ones of said sidewalls to a pair of bead support surfaces, each of said bead support surfaces being frustoconical with an included angle in the range of 20° to 24°, said bead support surfaces terminating at laterally outer edges in upstanding flanges directed to an opposite side of said lateral extensions to said well.
7. A wheel rim according to claim 6 wherein said flanges are part circular in section.
8. A wheel rim according to claim 6 wherein said bead support surfaces have an included angle of 22°.
9. A vehicle wheel assembly having a rim and a tire mounted on said rim, said rim having a centrally disposed well and a frustoconical bead support surface to either side thereof and having an included cone angle in the range of 10° to 12°, said bead support surfaces terminating in an upstanding flange overlapping a radially inner portion of said tire, said tire including a pair of annular beads, each associated with a respective one of said bead seats, a plurality of plies extending between said beads to define a carcass having a pair of radially extending sidewalls and a tread portion, an elastomeric cap covering said carcass and extending across each of said sidewalls and said tread portion, said plies extending about said beads to provide an inwardly directed bead seat for engagement with said bead support surfaces, said bead seat having a substantially frustoconical inwardly directed sealing surface complementary to said bead support surfaces, said carcass having a radial spacing between said sealing surface and a radially outer surface of said cap that is less than or equal to 60% of a maximum width of said carcass in a free body state.
10. A vehicle wheel assembly according to claim 9 wherein said bead support surfaces have an included angle of 22°.
11. A vehicle wheel assembly according to claim 9 wherein said flanges project laterally outwardly and said cap terminates adjacent to said flanges.
12. A vehicle wheel assembly according to claim 12 wherein said flanges are part circular in section.
13. A vehicle wheel assembly according to claim 12 wherein said flange extends radially from said support surfaces greater than 0.5 inches.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/626,906 US20050189056A1 (en) | 1997-04-17 | 2003-07-25 | Wheel and tire assembly having a bead seat angle in the range of 10 degree to 12 degree |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US84282697A | 1997-04-17 | 1997-04-17 | |
US09/394,776 US6598640B1 (en) | 1997-04-17 | 1999-09-13 | Wheel and tire assembly having a bead seat angle in the range of 10 degree to 12 degree |
US10/626,906 US20050189056A1 (en) | 1997-04-17 | 2003-07-25 | Wheel and tire assembly having a bead seat angle in the range of 10 degree to 12 degree |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/394,776 Division US6598640B1 (en) | 1997-04-17 | 1999-09-13 | Wheel and tire assembly having a bead seat angle in the range of 10 degree to 12 degree |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050189056A1 true US20050189056A1 (en) | 2005-09-01 |
Family
ID=25288332
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/394,776 Expired - Lifetime US6598640B1 (en) | 1997-04-17 | 1999-09-13 | Wheel and tire assembly having a bead seat angle in the range of 10 degree to 12 degree |
US10/626,906 Abandoned US20050189056A1 (en) | 1997-04-17 | 2003-07-25 | Wheel and tire assembly having a bead seat angle in the range of 10 degree to 12 degree |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/394,776 Expired - Lifetime US6598640B1 (en) | 1997-04-17 | 1999-09-13 | Wheel and tire assembly having a bead seat angle in the range of 10 degree to 12 degree |
Country Status (11)
Country | Link |
---|---|
US (2) | US6598640B1 (en) |
EP (1) | EP0873888B1 (en) |
AR (1) | AR012473A1 (en) |
AU (1) | AU741644B2 (en) |
BR (1) | BR9801091A (en) |
CA (1) | CA2235114C (en) |
CO (1) | CO4780033A1 (en) |
DE (1) | DE69827188T2 (en) |
ES (1) | ES2154971B1 (en) |
PE (1) | PE38199A1 (en) |
UY (1) | UY24961A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100001575A1 (en) * | 2008-07-03 | 2010-01-07 | Alcoa Wheel Products Europe Services And Trading Limited Liability Company | Unified rim horn |
US8250915B1 (en) * | 2008-07-03 | 2012-08-28 | Hunter Engineering Company | Tire changer with actuated load roller |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6917894B2 (en) * | 2002-12-05 | 2005-07-12 | Brian Inge | Tire plus-sizing software program |
FR2855458B1 (en) * | 2003-05-28 | 2006-06-16 | Michelin Soc Tech | PNEUMATIC FOR HEAVY EQUIPMENT |
GB2490512B (en) * | 2011-05-03 | 2018-03-14 | William Tomkins Charles | Wire wheel assembly |
WO2014047133A1 (en) | 2012-09-20 | 2014-03-27 | Gkn Armstrong Whells, Inc. | Lock ring spreader |
JP5809192B2 (en) * | 2013-05-20 | 2015-11-10 | 株式会社ブリヂストン | Run-flat tires for passenger cars |
JP6317130B2 (en) * | 2014-02-20 | 2018-04-25 | 株式会社ブリヂストン | Run flat tire |
CN112078297B (en) * | 2020-09-18 | 2023-02-07 | 蚌埠学院 | Wheel hub for heavy engineering truck and vehicle |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2929659A (en) * | 1956-05-29 | 1960-03-22 | Dayton Steel Foundry Co | Drop center rim |
US3229744A (en) * | 1964-07-08 | 1966-01-18 | Budd Co | Tubeless tire wheel construction |
US4351382A (en) * | 1979-12-06 | 1982-09-28 | Dunlop Limited | Tire and wheel rim assemblies |
US4836260A (en) * | 1987-02-10 | 1989-06-06 | Sp Tyres Uk Ltd | Wheel rim for a pneumatic tire |
US5232032A (en) * | 1990-07-17 | 1993-08-03 | Compagnie Generale Des Etablissements Michelin - Michelin & Cie | Assembly consisting of a tire and a removable bead protector |
US5749982A (en) * | 1993-12-08 | 1998-05-12 | Compagnie Generale Des Etablissements Michelin - Michelin & Cie | Rim and assembly of tire and/or ring-shaped tread support on same |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE550658A (en) * | 1955-08-30 | |||
FR1195309A (en) * | 1957-03-15 | 1959-11-17 | Goodrich Co B F | Tire and rim |
US3830275A (en) * | 1969-10-24 | 1974-08-20 | Goodyear Tire & Rubber | Treads, pneumatic tires and a process for improving tire performance |
DE2425743C3 (en) * | 1974-05-28 | 1981-11-12 | Continental Gummi-Werke Ag, 3000 Hannover | Vehicle wheel with a tubeless pneumatic tire |
US4077455A (en) * | 1976-01-05 | 1978-03-07 | The Goodyear Tire & Rubber Company | Radial ply pneumatic tire and rim assembly |
US4029139A (en) * | 1976-01-05 | 1977-06-14 | The Goodyear Tire & Rubber Company | Tire and rim assembly |
PT68279A (en) * | 1977-08-15 | 1978-08-01 | Goodyear Tire & Rubber | Pneumatic tire and pneumatic tire mounted on a rim |
US4353403A (en) * | 1977-11-21 | 1982-10-12 | The Goodyear Tire & Rubber Company | Pneumatic tire having air escape means |
EP0077161A3 (en) * | 1981-10-09 | 1984-03-21 | Dunlop Limited | A tyre |
DE3341969A1 (en) * | 1983-11-21 | 1985-05-30 | Uniroyal Englebert Reifen GmbH, 5100 Aachen | TIRE TIRE WHEEL |
JPH0741761B1 (en) * | 1986-05-15 | 1995-05-10 | ||
JPH07121646B2 (en) * | 1989-11-17 | 1995-12-25 | 住友ゴム工業株式会社 | Tire and rim assembly |
US5431209A (en) * | 1991-06-26 | 1995-07-11 | Sumitomo Rubber Industries, Ltd. | Passenger tire with low bead apex volume |
US5445202A (en) * | 1993-08-31 | 1995-08-29 | The Goodyear Tire & Rubber Company | Radial ply tire with specified bead portion fitment to design rim |
-
1998
- 1998-04-17 CO CO98021308A patent/CO4780033A1/en unknown
- 1998-04-17 DE DE69827188T patent/DE69827188T2/en not_active Expired - Lifetime
- 1998-04-17 BR BR9801091-3A patent/BR9801091A/en not_active IP Right Cessation
- 1998-04-17 PE PE1998000286A patent/PE38199A1/en not_active Application Discontinuation
- 1998-04-17 AR ARP980101798A patent/AR012473A1/en active IP Right Grant
- 1998-04-17 AU AU61990/98A patent/AU741644B2/en not_active Expired
- 1998-04-17 UY UY24961A patent/UY24961A1/en not_active Application Discontinuation
- 1998-04-17 EP EP98106984A patent/EP0873888B1/en not_active Expired - Lifetime
- 1998-04-17 CA CA002235114A patent/CA2235114C/en not_active Expired - Lifetime
- 1998-04-17 ES ES009800871A patent/ES2154971B1/en not_active Expired - Fee Related
-
1999
- 1999-09-13 US US09/394,776 patent/US6598640B1/en not_active Expired - Lifetime
-
2003
- 2003-07-25 US US10/626,906 patent/US20050189056A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2929659A (en) * | 1956-05-29 | 1960-03-22 | Dayton Steel Foundry Co | Drop center rim |
US3229744A (en) * | 1964-07-08 | 1966-01-18 | Budd Co | Tubeless tire wheel construction |
US4351382A (en) * | 1979-12-06 | 1982-09-28 | Dunlop Limited | Tire and wheel rim assemblies |
US4836260A (en) * | 1987-02-10 | 1989-06-06 | Sp Tyres Uk Ltd | Wheel rim for a pneumatic tire |
US5232032A (en) * | 1990-07-17 | 1993-08-03 | Compagnie Generale Des Etablissements Michelin - Michelin & Cie | Assembly consisting of a tire and a removable bead protector |
US5749982A (en) * | 1993-12-08 | 1998-05-12 | Compagnie Generale Des Etablissements Michelin - Michelin & Cie | Rim and assembly of tire and/or ring-shaped tread support on same |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100001575A1 (en) * | 2008-07-03 | 2010-01-07 | Alcoa Wheel Products Europe Services And Trading Limited Liability Company | Unified rim horn |
US8250915B1 (en) * | 2008-07-03 | 2012-08-28 | Hunter Engineering Company | Tire changer with actuated load roller |
US9731566B1 (en) | 2008-07-03 | 2017-08-15 | Hunter Engineering Company | Tire changer with actuated load roller |
Also Published As
Publication number | Publication date |
---|---|
PE38199A1 (en) | 1999-04-14 |
AU741644B2 (en) | 2001-12-06 |
UY24961A1 (en) | 1998-05-26 |
US6598640B1 (en) | 2003-07-29 |
BR9801091A (en) | 1999-09-14 |
DE69827188T2 (en) | 2006-03-02 |
CA2235114A1 (en) | 1998-10-17 |
CO4780033A1 (en) | 1999-05-26 |
CA2235114C (en) | 2008-07-08 |
AR012473A1 (en) | 2000-10-18 |
ES2154971A1 (en) | 2001-04-16 |
EP0873888A2 (en) | 1998-10-28 |
EP0873888B1 (en) | 2004-10-27 |
DE69827188D1 (en) | 2004-12-02 |
AU6199098A (en) | 1998-10-22 |
EP0873888A3 (en) | 2000-10-18 |
ES2154971B1 (en) | 2001-11-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4580610A (en) | Tire | |
US3915215A (en) | Pneumatic tire and wheel assembly | |
US4573509A (en) | Run flat device | |
US4157107A (en) | Run-flat tire having integral internal support means | |
JP4308601B2 (en) | Crown reinforcement for heavy duty tires | |
US4726408A (en) | Pneumatic tire bead portion structure | |
US5435370A (en) | Pneumatic tire having discontinuous outer carcass ply | |
US6598640B1 (en) | Wheel and tire assembly having a bead seat angle in the range of 10 degree to 12 degree | |
CA2137999A1 (en) | Pneumatic tyre | |
US4794970A (en) | Vehicle wheel | |
US3025898A (en) | Safety wheel rim | |
US4747440A (en) | Pneumatic tire and wheel rim assemblies | |
US6422280B1 (en) | Heavy duty tire with specified bead design | |
EP0958153B1 (en) | Heavy duty tire with specified bead design | |
EP1019259B1 (en) | Tire with reversed carcass ply turnup configuration | |
US4274465A (en) | Pneumatic tire and wheel rim assembly | |
US5538059A (en) | Tire and tire rim assembly adapted to carry weights | |
EP1002667A1 (en) | Asymmetric pneumatic tire | |
KR20030043716A (en) | Tire with multiple carcass reinforcement plies having beads of specified structure | |
US3915214A (en) | Tire bead retainer | |
US5082040A (en) | Vehicle wheel for a pneumatic tire | |
CA1231035A (en) | Wheel and tire assembly for a vehicle | |
US4741373A (en) | Vehicle wheel and tire arrangement | |
EP0167283B1 (en) | Pneumatic tyres | |
AU592132B2 (en) | A wheel for all-terrain vehicles |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |