(under subclass 301) Subject matter including means for placing or inserting (a) an explosive, or (b) a fluid under high pressure capable of rapid expansion to break up material in a hollowed-out place.
(1) Note. The "hollowed out place" can be in or on the earth, under the water, or within some object.
SEE OR SEARCH THIS CLASS, SUBCLASS:
305+, for borehole loading involving the shaping or the directing of a detonation wave.
311+, for loading boreholes or patterned blasting arrangements.
321, for a contained blasting charge having a support means including bails.
SEE OR SEARCH CLASS
86, Ammunition and Explosive-Charge Making, 20, for loading an explosive charge into a blast hole when making the charge or when not detonated.
166, Wells,
299, for a process involving an explosion; and subclass 63 for apparatus for causing an explosion in a well.
175, Boring or Penetrating the Earth,
2+, for boring a hole with an explosive in an inaccessible place.
181, Acoustics,
101, for seismic exploration using an explosive compressional wave source placed in a hole.
212, Traversing Hoists,
312+, for traveling cranes, subclasses 223+ for rotary cranes, and subclasses 71+ for overhead hoists.
242, Winding, Tensioning, or Guiding,
370+, for a reeling device of general use. 254, Implements or Apparatus for Applying Pushing or Pulling Force,
2+, for hoisting trucks; and subclasses 264+ for cable-hauling apparatus.
294, Handling: Hand and Hoist-Line Implements,
19+, for poles; and subclass 78 for cable and hook tackle.
299, Mining or In Situ Disintegration of Hard Material,
