US PATENT SUBCLASS 172 / 252
.~.~.~ Tool plus added part forms diverse tool

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

245  DF  CONVERTIBLE; OR CHANGEABLE BY DISASSEMBLY OR ASSEMBLY {5}
250  DF  .~ Changeable by disassembly or assembly {3}
251  DF  .~.~ Tool changeable to diverse tool {1}
252.~.~.~ Tool plus added part forms diverse tool

DEFINITION

Classification: 172/252

(under subclass 251) Apparatus in which the change is brought

about by adding to an earth working element or a major portion of an earth working element a part to form an earth working element of a different shape or size than the original earth working element, said part not being intended for use as an earth working element by itself in the apparatus.

(1) Note. Merely attaching an earth working element to a nominally recited spring tooth or rigid earth working tooth is not included, the tooth in that case being considered merely a standard. However, if some earth working configuration of the tooth is claimed the device is classifiable under this definition.

SEE OR SEARCH THIS CLASS, SUBCLASS:

535, for detachable rims for disks.

708, for an earth working element attached to a spring tooth.

719, for an earth working element with an added-on cutting or wearing edge, point, or surface. 777+, for a scraper supporting a readily detachable narrow depending tool.