F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  
WEAPONS; BLASTING
 F42
AMMUNITION; BLASTING
 F42

Note(s)

  1. Although simulators are generally in class G09, provision is included in class F42 for means for practice or training which may have aspects of simulation.
  2. In this class, the following terms are used with the meanings indicated:
    1. "Primer" effects the first explosive step in the sequence of explosion.
    2. "Percussion cap" — a primer which is struck to explode.
    3. "Igniter" effects the first spark-producing or heat-producing step but may not be explosive.
    4. "Firing-means", "initiator" (used respectively in the arts of weaponry and blasting) — the device acting directly on the primer, which device may or may not form part of the fuze.
    5. "Detonator charge" — a charge used to amplify the explosion of the primer.
    6. "Fuze" — an assembly which determines the moment of the explosion (instantaneous or delayed) and which incorporates firing-means for initiating the explosion spark.
    7. "Ammunition" covers expulsion charge and projectile whether or not forming a single body, unless otherwise made clear. [2]
 F42D
BLASTING
 F42D 1/00
Blasting methods
 F42D 1/02
·  by arranging of cartridges to form an assembly
 F42D 1/04
·  Arrangements for ignition
 F42D 1/06
·  ·  relative timing of several charges
 F42D 1/08
·  Tamping methods
 F42D 3/00
Particular applications of blasting techniques
 F42D 3/02
·  for demolition of tall structures, e.g. chimney stacks
 F42D 3/04
·  for rock blasting
 F42D 3/06
·  for seismic purposes
 F42D 5/00
Safety arrangements
 F42D 5/02
·  Locating undetonated charges
 F42D 5/04
·  Rendering explosive charges harmless
 F42D 5/06
·  Unloading boreholes
 F42D 7/00
Other blasting