US PATENT SUBCLASS 175 / 358
.~.~.~ Mutually contacting cutter supports

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}
355  DF  .~.~ Circumferentially displaced cutter axes {3}
358.~.~.~ Mutually contacting cutter supports {1}
359  DF  .~.~.~.~> With bearing or seal details

DEFINITION

Classification: 175/358

(under subclass 355) Apparatus in which all of the cutter elements are journaled on a separate axle or pin which intersect, abut, or otherwise engage each other under the bit head so as to support or brace each other.

(1) Note. Additional brace means may be interposed between the head and the region of intersection or engagement of the cutter supports.