US PATENT SUBCLASS 175 / 347
.~.~.~.~ Removable axle or bushing

Current as of: June, 1999
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175 /   HD   BORING OR PENETRATING THE EARTH

327  DF  BIT OR BIT ELEMENT {21}
331  DF  .~ Rolling cutter bit or rolling cutter bit element {26}
344  DF  .~.~ Noncutting portion forwardly of rolling cutter (e.g., reamer) {1}
345  DF  .~.~.~ Longitudinal axis cutter {2}
347.~.~.~.~ Removable axle or bushing

DEFINITION

Classification: 175/347

(under subclass 345) Apparatus wherein the rolling cutter element is mounted on an axle or bushing which is removably fastened to the bit by a means which is readily detachable.

SEE OR SEARCH THIS CLASS, SUBCLASS:

346, for axles which are supported by a supporting device which supporting device is detachably connected to the bit.

364, for a transverse axis rolling cutter element which is mounted on an axle or bushing which is removably fastened to the bit.