US PATENT SUBCLASS 173 / 60
.~.~ Motive fluid does not contact work but induces flow of another fluid

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

197  DF  WORK CLEANSING {10}
59  DF  .~ By motive fluid for drive motor or advance causing or controlling motor {7}
60.~.~ Motive fluid does not contact work but induces flow of another fluid

DEFINITION

Classification: 173/60

(under subclass 59) Apparatus in which the motive fluid stream does not contact the work face, but is provided with means to induce flow of an ambient fluid (e.g., a venturi) to cause the ambient fluid to circulate over and cleanse the work face.