Wheel substitutes for land vehicles – With interposed friction drive belt
Patent
1978-04-10
1981-08-04
Scherbel, David A.
Wheel substitutes for land vehicles
With interposed friction drive belt
305 54, B62D 5528
Patent
active
042818826
ABSTRACT:
A tractor provided with three sets of twin pneumatic tires mounted on wheels on each side of the tractor, a track being received around three, in one embodiment and two in the other embodiment, pneumatic tires. In each embodiment only the rearmost set of wheels is powered. The track is a belt composed of a flexible material which in the first embodiment has a plurality of traction members secured thereto by bolts extending through the belt which are secured on the inner side by a strip opposite the traction members, such strip having a V-shaped portion which is received between the twin tires to retain the track in place. Each traction member includes a part flush to the belt through which the bolts are received, a further part extending from the first part outwardly and normally to the belt and a ground-engaging part extending from the second part in a direction parallel to the belt. The traction member in cross-section thus may appear as an inverted U with outwardly extending flanges or as a "C" with square sides or as an inverted "T" or the like whereby, in other embodiments, the ground engaging portion of the traction member has at least one flange extending away from the second part of the traction member. In operation, the traction members tend to become biased when under the tire wherein they first meet the ground whereby their ground engaging parts converge relative to the ground towards the relative direction of movement of the track.
REFERENCES:
patent: 2992863 (1961-07-01), Fredricks et al.
patent: 3093423 (1963-06-01), Adams
patent: 3378314 (1968-04-01), Knowles
patent: 3747995 (1973-07-01), Russ, Sr.
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