US PATENT SUBCLASS 172 / 538
.~ Paired press rims (e.g., planter press wheels, etc.)

Current as of: June, 1999
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172 /   HD   EARTH WORKING

518  DF  ROLLING, ROTATING OR ORBITALLY MOVING TOOL {30}
538.~ Paired press rims (e.g., planter press wheels, etc.)

DEFINITION

Classification: 172/538

(under subclass 518) Apparatus in which the earth working element comprises an integral or separately formed pair of cooperating, radially inwardly converging annular soil packing surfaces adapted to ride on and compress the opposed sloping faces of a ridged plant or seed row.

SEE OR SEARCH THIS CLASS, SUBCLASS:

519, for planter press wheels having the opposed converging rim portions thereof, i.e., the tread portions, formed of a flexible material such as rubber.