US PATENT SUBCLASS 173 / 84
.~ Hammer or tool cyclically disconnected from cable

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

81  DF  MEANS TO CONTROL ADVANCE AND CYCLICALLY RECIPROCATE A CABLE-OPERATED HAMMER OR TOOL {5}
84.~ Hammer or tool cyclically disconnected from cable

DEFINITION

Classification: 173/84

(under subclass 81) Apparatus in which means are provided to cyclically release the driving connection between the cable, or similar flexible element, and the hammer head or tool.

SEE OR SEARCH THIS CLASS, SUBCLASS:

55, for a hammer or tool shaft reciprocated by gripping means which release or yield to permit advance, and in which contact with a fixed structure moves the grips out of shaft engagement.