Vehicle
First Claim
Patent Images
1. A vehicle comprising a body;
- a plurality of first load bearing wheels rotatably mounted about respective first axes to a chassis to support the vehicle; and
at least one secondary wheel which is rotatably mounted to the vehicle about a respective second axis, said second axis positioned longitudinally between the said first axes, and which secondary wheel extends below the axis of a pair of longitudinally spaced first wheels and overlaps the adjacent first wheels sufficiently to prevent a ground projection extending vertically and horizontally across the vehicle path from engaging a space between adjacent wheels to impede movement of the vehicle, wherein the lowermost part of each secondary wheel is above the lowermost parts of the adjacent load bearing wheels, and wherein the diameter of each secondary wheel is less than the diameter of the adjacent load bearing wheels, and the axis of rotation of the secondary and adjacent load bearing wheels are in the same horizontal plane.
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Abstract
A wheel vehicle for traversing rough uneven terrain. One set of load bearing wheels is used in conjunction with secondary wheels that are placed such that the secondary wheels bridge the spacing between the load bearing wheels below the horizontal axis of the load bearing wheels sufficiently to prevent any ground projection from engaging such a space to impede movement of the vehicle.
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Citations
13 Claims
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1. A vehicle comprising a body;
- a plurality of first load bearing wheels rotatably mounted about respective first axes to a chassis to support the vehicle; and
at least one secondary wheel which is rotatably mounted to the vehicle about a respective second axis, said second axis positioned longitudinally between the said first axes, and which secondary wheel extends below the axis of a pair of longitudinally spaced first wheels and overlaps the adjacent first wheels sufficiently to prevent a ground projection extending vertically and horizontally across the vehicle path from engaging a space between adjacent wheels to impede movement of the vehicle, wherein the lowermost part of each secondary wheel is above the lowermost parts of the adjacent load bearing wheels, and wherein the diameter of each secondary wheel is less than the diameter of the adjacent load bearing wheels, and the axis of rotation of the secondary and adjacent load bearing wheels are in the same horizontal plane. - View Dependent Claims (3, 4, 5, 6, 7, 8, 10, 11, 12)
- a plurality of first load bearing wheels rotatably mounted about respective first axes to a chassis to support the vehicle; and
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2. A vehicle comprising a body;
- a plurality of load bearing wheels rotatably mounted about respective first axes to the chassis to support the vehicle; and
at least one secondary wheel which is rotatably mounted to the vehicle about respective second axes, said second axis positioned longitudinally between said first axes, and which secondary wheel extends below the axis of a pair of longitudinally spaced first wheels and overlaps the adjacent first wheels sufficiently to prevent a ground projection extending vertically and horizontally across the vehicle path from engaging a space between adjacent wheels to impede movement of the vehicle, wherein the lowermost part of each secondary wheel is above the lowermost parts of the adjacent load bearing wheels, and wherein the axis of rotation of the or each secondary wheel is positioned relatively above the axis of rotation of the said adjacent load bearing wheels, and the diameter of the or each secondary wheel is identical to the diameter of the adjacent load bearing wheels.
- a plurality of load bearing wheels rotatably mounted about respective first axes to the chassis to support the vehicle; and
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9. A vehicle as claimed in 3, 4, or 5, wherein the difference between the spacing between the axles and the radius of the load bearing wheels are less than one tenth of the radius of the load bearing wheels.
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13. A vehicle comprising a body;
- at least three pairs of load bearing wheels rotatably mounted about respective first axes to the chassis to support the vehicle, the load bearing wheels having their lowermost portions in a common ground plane; and
a plurality of pairs of secondary wheels rotatably mounted to the vehicle about respective second axes, each second axis being positioned longitudinally between two adjacent first axes with the first and second axes alternating, and each of which secondary wheel extends below the axes of each of longitudinally adjacent first wheels, overlaps the adjacent first wheels sufficiently to prevent a ground projection extending vertically and horizontally across the vehicle path from engaging a space between adjacent wheels to impede movement of the vehicle, and has a lowermost part spaced above the ground plane.
- at least three pairs of load bearing wheels rotatably mounted about respective first axes to the chassis to support the vehicle, the load bearing wheels having their lowermost portions in a common ground plane; and
Specification