US PATENT SUBCLASS 173 / 144
.~ Reciprocatory drive and advance originate from same mechanical element


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

141  DF  ADVANCE CAUSING OR CONTROLLING MEANS {6}
144.~ Reciprocatory drive and advance originate from same mechanical element


DEFINITION

Classification: 173/144

(under subclass 141) Apparatus in which one mechanical motion converting element transmits motion from a source of power to cause cyclic to and fro rectilinear motion of a tool and to simultaneously cause or control forward movement of the tool.

SEE OR SEARCH THIS CLASS, SUBCLASS:

53+, for a hammer or tool shaft reciprocated by gripping means which release or yield to permit advance.

81+, for means to control advance and cyclically reciprocate a cable operated tool.

142+, for advance causing or controlling means operated solely by vibrations from reciprocating element in tool drive.

SEE OR SEARCH CLASS

74, Machine Element or Mechanism, 829, for a constant length alternating stroke with means to displace the end limits.