|  | F |
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

WEAPONS; BLASTING

|  | F42 |
AMMUNITION; BLASTING

|  | F42 |
Note(s) Although simulators are generally in class Fulltext... Hierarchy... Expanded...G09, provision is included in class Fulltext... Hierarchy... Expanded...F42 for means for practice or training which may have aspects of simulation. In this class, the following terms are used with the meanings indicated: "Primer" effects the first explosive step in the sequence of explosion. "Percussion cap" — a primer which is struck to explode. "Igniter" effects the first spark-producing or heat-producing step but may not be explosive. "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. "Detonator charge" — a charge used to amplify the explosion of the primer. "Fuze" — an assembly which determines the moment of the explosion (instantaneous or delayed) and which incorporates firing-means for initiating the explosion spark. "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