US PATENT SUBCLASS 301 / 92
.~.~.~ Adjustable by use of screw

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

5.1  DF  WHEEL {21}
86  DF  .~ Nonresilient tire {3}
91  DF  .~.~ Adjustable circumference tire {2}
92.~.~.~ Adjustable by use of screw {1}
93  DF  .~.~.~.~> Both right- and left-threaded

DEFINITION

Classification: 301/92

(under subclass 91) Wheel wherein the adjusting means is operated by a screw-threaded element.