US PATENT SUBCLASS 172 / 40
.~ Vibrating tool

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

35  DF  WITH DRIVE MEANS FOR TOOL OR CLEANER {37}
40.~ Vibrating tool

DEFINITION

Classification: 172/40

(under subclass 35) Apparatus in which an earth working element, or a portion thereof, is driven so that it has a motion of small amplitude (i.e., it vibrates).

(1) Note. Generally, the implement is driven by reaction forces produced by the rapid rotation of an off-center or unbalanced mass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

61+, for intermittent drives for tools.