US PATENT SUBCLASS 301 / 48
.~.~.~.~.~ Alternately projecting and retracting

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


301 /   HD   LAND VEHICLES: WHEELS AND AXLES

5.1  DF  WHEEL {21}
41.1  DF  .~ Traction increasing {5}
43  DF  .~.~ Projecting cleat {2}
45  DF  .~.~.~ Movable {2}
46  DF  .~.~.~.~ Adjustable {3}
48.~.~.~.~.~ Alternately projecting and retracting {1}
49  DF  .~.~.~.~.~.~> Supported by supplemental wheel attachment

DEFINITION

Classification: 301/48

(under subclass 46) Wheel wherein the cleat, during revolution of the wheel, is alternately projected and retracted, the projected position being at the ground-engaging position of the spur or cleat.

SEE OR SEARCH CLASS

172, Earth Working,

546, for a rolling earth working tool with alternately projecting and retracting teeth or blades.