US PATENT SUBCLASS 301 / 40.6
.~.~ Auxiliary wheel movable radially into emergency position

Current as of: June, 1999
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301 /   HD   LAND VEHICLES: WHEELS AND AXLES

5.1  DF  WHEEL {21}
38.1  DF  .~ Emergency {2}
40.6.~.~ Auxiliary wheel movable radially into emergency position

DEFINITION

Classification: 301/40.6

Auxiliary wheel movable radially into emergency position:

(under subclass 38.1) Wheel comprising an auxiliary wheel having an axis parallel to that of the ordinary wheel, movable laterally to present the periphery of the wheel to the earth.