US PATENT SUBCLASS 172 / 371
.~ Hand tool

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

329  DF  GUIDED BY WALKING ATTENDANT; SUPPORTED, PROPELLED, OR HELD IN POSITION BY ATTENDANT {7}
371.~ Hand tool {6}
372  DF  .~.~> Adjustable {1}
375  DF  .~.~> Alternately usable diverse tools or parts
376  DF  .~.~> Loop type
377  DF  .~.~> Channel type
378  DF  .~.~> Plural prongs, teeth or serrations {2}
381  DF  .~.~> Non-planar earth working portion

DEFINITION

Classification: 172/371

(under subclass 329) Apparatus comprising an earth working means having a handle for manipulating and supporting it (e.g., hand hoe).

(1) Note. Mortar mixing hoes are also included on account of their similarity of structure.

(2) Note. Patents are classified under this definition even if only the earth working portion is claimed and not the handle if the sole disclosure relates to hand tools or the claim preamble relates to a hand tool.

SEE OR SEARCH THIS CLASS, SUBCLASS:

13+, for hand tools of the lawn-edger type.

349+, for handle propelled rolling implements. SEE OR SEARCH CLASS

7, Compound Tools, appropriate subclasses for miscellaneous compound tools.

16, Miscellaneous Hardware,

110.1+, for handles for closures, receptacles, and the like, and see the Search Notes thereunder for the field of search for handles adapted for use with other devices.

30, Cutlery, appropriate subclasses for knives and cutting implements of general utility. This class (172) takes patents in which the claims are restricted to or the sole disclosed use is an implement for working the soil except those devices in which the cutting edge extends generally in the direction of the handle. In the latter case classification in Class 30 results.

56, Harvesters,

400.01+, for hand rakes.

125, Stone Working,

43, for miner's picks.

294, Handling: Hand and Hoist-Line Implements,

49+, for hand forks and shovels.

366, Agitating, 1+, for tools especially adapted for mixing mortar, asphaltic and hydraulic cement, concretes, and the like.