US PATENT SUBCLASS 173 / 147
.~ Driven flexible member causes advance

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

141  DF  ADVANCE CAUSING OR CONTROLLING MEANS {6}
147.~ Driven flexible member causes advance

DEFINITION

Classification: 173/147

(under subclass 141) Apparatus in which force to cause forward movement of the tool is imparted to the tool or tool drive through an easily bendable element which in normal operation is repeatedly curved and straightened such as a belt, cable, chain, etc.

SEE OR SEARCH CLASS

299, Mining or In Situ Disintegration of Hard Material,

47+, for a side wall working mining machine having a driven flexible member which causes advance of the machine.