US PATENT SUBCLASS 173 / 142
.~ Operated solely by vibrations from reciprocating element in tool drive

Current as of: June, 1999
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173 /   HD   TOOL DRIVING OR IMPACTING

141  DF  ADVANCE CAUSING OR CONTROLLING MEANS {6}
142.~ Operated solely by vibrations from reciprocating element in tool drive {1}
143  DF  .~.~> Intermittent unidirectional rotation of advance element

DEFINITION

Classification: 173/142

(under subclass 141) Apparatus in which the means to cause or control forward movement of the tool operates with no power input other than pulsations resulting from the cyclic change of direction of movement of an element of the tool drive means, which element moves to and fro in a substantially rectilinear path.

SEE OR SEARCH THIS CLASS, SUBCLASS:

49, for tool drive by means reacting to a rotating eccentric mass.

113, for an impacting device including a means to advance a hammer in which the advance may be operated by hammer vibrations.