(under subclass 10) Process in which a step is included for breaking up hard material in which (1) heat energy is directed into the material or (2) vibrational energy is applied to the material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3+, for a process of apparatus for in situ conversion of solid to fluid and usually involving the use of heat energy.
SEE OR SEARCH CLASS
166, Wells,
177.5, and 177.6 for vibrating or fracturing apparatus in a well, subclass 249 for well processes comprising vibrating the earth.
175, Boring or Penetrating the Earth, 11+, for boring by directly applying heat to fluidize or comminute, subclass 17 for boring comprising heating within the bore and subclass 56 for vibration boring.
