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A wheel (1) with an integrally formed wheel frame including a central hub (2) rotatable about a main axis, a plurality of first supports in a first plane transverse to the main axis and radially spaced from the central hub (2) to form a first discontinuous rim with a first series of rollers (4) regu

A wheel (1) with an integrally formed wheel frame including a central hub (2) rotatable about a main axis, a plurality of first supports in a first plane transverse to the main axis and radially spaced from the central hub (2) to form a first discontinuous rim with a first series of rollers (4) regularly spaced around the first rim, a plurality of second supports radially spaced from the hub to form a second discontinuous rim with a second series of rollers (5) regularly spaced around the second rim, each rollers having a main body wherein the lateral central cross-sectional diameter is greater then the diameter of the end portions, each roller being rotatable about an axis transverse to the main axis and when viewed from a side elevation, there being substantial overlap of each of the first series of rollers (4) with each diagonally adjacent roller of the second series of rollers (5).

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1. A wheel including:(a) an integrally formed wheel frame including: (i) a central hub rotatable about a main axis; (ii) a plurality of first supports in a first plane transverse to the main axis and radially spaced from the central hub to form a first discontinuous rim; and (iii) a plurality of sec

1. A wheel including:(a) an integrally formed wheel frame including: (i) a central hub rotatable about a main axis; (ii) a plurality of first supports in a first plane transverse to the main axis and radially spaced from the central hub to form a first discontinuous rim; and (iii) a plurality of second supports radially spaced from the hub to form a second discontinuous rim, said second supports in a second plane transverse to the main axis and parallel to, and spaced from, the first discontinuous rim; (b) a first series of rollers regularly spaced around the first rim and supported for rotation by the plurality of first supports; and (c) a second series of rollers regularly spaced around the second rim and supported for rotation by the plurality of second supports, wherein, (iv) each roller has a main body wherein the lateral cross-sectional diameter is greater than the diameter of the end portions of the main body; (v) each roller is rotatable about an axis transverse to the main axis; and (vi) when viewed in side elevation, the effective ground contacting surface of each roller of the first series of rollers overlaps with the effective ground contacting surface of each diagonally adjacent roller of the second series of rollers to the extent of between 20 and 35% of the length of each roller, so that the wheel is adapted to make effective ground contact through the main body of at least one of the rollers at any one time for improved travel parallel to said main axle. 2. A wheel according to claim 1, wherein a plurality of radial arms extend from the central hub to the plurality of first and second supports whereby to radially space the supports from the central hub.3. A wheel according to claim 2, wherein the each one of the plurality of first and second supports is spaced from the central hub by a corresponding one of the radial arms.4. A wheel according to claim 1 herein at least the first series of rollers is mounted for rotation on a first polyaxled ring.5. A wheel according to claim 4, wherein the second series of rollers is mounted for rotation on a second polyaxled ring.6. A wheel according to claim 5, wherein each roller is mounted on one of a plurality of corresponding axle portions of the first and second polyaxled rings.7. A wheel according to claim 1, wherein the roller includes an inner core and a tire applied to the core.8. A wheel according to claim 7, wherein the inner core comprises a pair of separately formed halves.9. A wheel according to claim 7, wherein the inner core comprises a pair of identical halves complementarily engageable to one another.10. A wheel according to claim 9, wherein the identical halves together define an axial bore adapted to receive an axle portion.11. A wheel according to claim 7, wherein the inner core includes surface features to facilitate adherence of the tire to the inner core.12. A wheel according to claim 1, wherein each of the first and second supports includes a head having an outer surface which lies substantially flush with the end portions of adjacent rollers in the first series or the second series of rollers.13. A wheel according to claim 12, wherein the head outer surface substantially covers the gap between adjacent rollers in the first series or the second series of rollers whereby to reduce debris and dust which may otherwise enter the first or second supports.14. A wheel according to claim 1, wherein the number of rollers in the first series or the second series of rollers is between 6 and 8.15. A wheel according to claim 1, wherein the overlap of each of the first series of rollers with each diagonally adjacent roller of the second series of rollers is 28% to 33% of the length of each of the rollers.16. A wheel according to claim 1, wherein each of said rollers is generally cylindrical.17. A wheel including:(a) an integrally formed wheel frame including: (i) a central hub rotatable about a main axis; (ii) a plurality of first supports in a first plane transverse to the main axis and radially spaced from the central hub to form a first discontinuous rim; and (iii) a plurality of second supports radially spaced from the hub to form a second discontinuous rim, said second supports in a second plane transverse to the main axis and parallel to, and spaced from, the first discontinuous rim; (b) a first series of rollers regularly spaced around the first rim and supported for rotation by the plurality of first supports; and (c) a second series of rollers regularly spaced around the second rim and supported for rotation by the plurality of second supports, wherein, (iv) each roller has a main body wherein the lateral cross-sectional diameter is greater than the diameter of the end portions of the main body; (v) each roller is rotatable about an axis transverse to the main axis; and (vi) when viewed in side elevation, each roller of the first series of rollers overlaps with each diagonally adjacent roller of the second series of rollers to the extent of between 20 and 35% of the length of each roller, whereby the wheel is capable of making effective ground contact through the main body of at least one of the rollers at any one time; wherein at least the first series of rollers is mounted for rotation on a first polyaxled ring that comprises a plurality of axle portions and an equal plurality of corner portions, each axle portion intermediate two of the corner portions, and each roller of the first series of rollers is mounted for rotation on one of the axle portions of the first polyaxled ring. 18. A wheel according to claim 17, wherein the second series of rollers is mounted for rotation on a second polyaxled ring that comprises a plurality of axle portions and an equal plurality of corner portions, each axle portion intermediate two of the corner portions, and each roller of the second series of rollers is mounted for rotation on one of the axle portions of the second polyaxled ring.19. A wheel according to claim 18, wherein each of said first supports and said second supports has a distal end comprising a generally semi-circular head adapted to receive a corner portion of said first polyaxled ring and said second polyaxled ring, respectively.20. A wheel according to claim 18, wherein said first polyaxled ring and said second polyaxled ring are each a hexagonal ring having six linear portions that are said axle portions and having six of said corner portions between the linear portions.21. A wheel according to claim 18, wherein said first polyaxled ring and said second polyaxled ring are each an octagonal ring having eight linear portions that are said axle portions and having eight of said corner portions between the linear portions.22. A wheel according to claim 17, wherein each of said rollers is generally cylindrical.23. A method of manufacturing a multiple directional wheel comprising:a) providing a wheel frame comprising: (i) a central hub rotatable about a main axis; (ii) a plurality of first supports in a first plane transverse to the main axis and radially spaced from the central hub to form a first discontinuous rim; and (iii) a plurality of second supports radially spaced from the hub to form a second discontinuous rim, said second supports in a second plane transverse to the main axis and parallel to, and spaced from, the first discontinuous rim; b) molding or casting a first and a second polyaxled ring; c) assembling an inner core of each of a first series of rollers about a corresponding axle portion of the first polyaxled ring and assembling an inner core of each of a second series of rollers about a corresponding axle portion of the second polyaxled ring, d) molding a tire about each inner core to form finished first and second polyaxled rings with rollers, each roller having a main body wherein the lateral cross-sectional diameter is greater than the diameter of the end portions of the main body; e) pressing each of the finished first and second polyaxled rings into the wheel frame by engaging corner portions of the first and second polyaxled rings with the corresponding first and second supports of the wheel frame; and f) heat sealing the corner portions in the supports. 24. A wheel according to claim 23, wherein each of said rollers is generally cylindrical.25. A method according to claim 23, wherein said first supports and said second supports each have a distal end with a generally semi-circular head, and wherein said pressing comprises pressing the first and second polyaxled rings into the generally semi-circular heads of the first supports and second supports, respectively.26. A wheel according to claim 23, wherein said first polyaxled ring and said second polyaxled ring are each a hexagonal ring having six linear portions that are said axle portions and having six of said corner portions between the linear portions.27. A wheel according to claim 23, wherein said first polyaxled ring and said second polyaxled ring are each an octagonal ring having eight linear portions that are said axle portions and having eight of said corner portions between the linear portions.