US PATENT SUBCLASS 305 / 128
.~.~ Combined with at least one intermediate roller

Current as of: June, 1999
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305 /   HD   WHEEL SUBSTITUTES FOR LAND VEHICLES

124  DF  WITH TRACK SUPPORT INTERMEDIATE OF END WHEELS {4}
127  DF  .~ Including elongated slide or frame support {1}
128.~.~ Combined with at least one intermediate roller

DEFINITION

Classification: 305/128

Combined with at least one intermediate roller:

(under subclass 127) Apparatus wherein the elongated slide support further includes a cylindrical element made of hard material located at the midportion of the continuous belt to hold the belt in a position away from or in addition to the slide support.

SEE OR SEARCH CLASS

180, Motor Vehicles,

193, for an endless type element with a vertically movable support located intermediate the forward and rearward extremities of the track. [figure] [caption]A - Elongated slide support; B - Endless track; C - Wheel or roller