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

WEAPONS; BLASTING

|  | F41 |
WEAPONS

|  | F41 |
Note(s) In this class, the following terms are used with the meanings indicated: "Semi-automatic firearm" — a firearm from which one shot is fired after actuation of the trigger and which then returns to a condition for firing a subsequent shot upon renewed actuation of the trigger. "Automatic gun" — a gun which will continue firing so long as the initial firing pressure is maintained on the trigger. "Sighting" — bringing into visual coincidence a direction defined by a so-called "sighting" device with the direction of a target. "Aiming" — bringing a weapon to a direction differing from the sighting direction by corrections in order that the projectile may hit the target. "Laying" — setting a weapon in the correct position for hitting a mark. (not applicable in English). Although simulators are generally in class Fulltext... Hierarchy... Expanded...G09, provision is included in class Fulltext... Hierarchy... Expanded...F41 for means for practice and training which may have aspects of simulation, e.g. in apparatus for so-called "military games".

|  | F41D |
AUTOMATIC GUNS, e.g. MACHINE GUNS (guns requiring auxiliary power for loading Fulltext... Hierarchy... Expanded...F41F)

|  | F41D 1/00 |
Automatic guns characterised by bolt locking means

|  | F41D 1/02 |
· | recoil-operated

|  | F41D 1/04 |
· | gas-operated

|  | F41D 1/06 |
· | with combined recoil and gas operation

|  | F41D 1/08 |
· | characterised by inertia lock

|  | F41D 3/00 |
Locking elements disposed between the barrel and the moving bolt or breech-block

|  | F41D 3/02 |
· | with toggle-joint lock

|  | F41D 3/04 |
· | with inertia lock

|  | F41D 3/06 |
· | the locking elements being integral with bolt or breech-block and barrel respectively

|  | F41D 5/00 |
Mechanisms for opening the lock after the shot has been fired

|  | F41D 5/02 |
· | recoil-operated

|  | F41D 5/04 |
· | gas-operated

|  | F41D 5/06 |
· · | Dust filters in gas systems therefor (filters in general Fulltext... Hierarchy... Expanded...B01D 46/00)

|  | F41D 5/08 |
· · | Gas regulators in gas systems therefor

|  | F41D 5/10 |
· · | Gas operators with expansion chambers therefor

|  | F41D 5/12 |
· | with combined recoil and gas operation

|  | F41D 7/00 |
Anti-aircraft guns; Revolving-cannon; Other automatic guns

|  | F41D 7/02 |
· | machine guns

|  | F41D 7/04 |
· | Revolving-cannon

|  | F41D 9/00 |
Cartridge, missile or projectile feed mechanisms

|  | F41D 9/02 |
· | Machine-gun feed mechanisms

|  | F41D 9/04 |
· | Anti-aircraft-gun feed mechanisms

|  | F41D 9/06 |
· | Revolving-cannon feed mechanisms

|  | F41D 11/00 |
Details or accessories not provided for in, or of interest apart from preceding groups

|  | F41D 11/02 |
· | Trigger mechanisms

|  | F41D 11/04 |
· | Percussion mechanisms

|  | F41D 11/06 |
· | Locking mechanisms not otherwise provided for

|  | F41D 11/08 |
· | Shot-velocity regulators

|  | F41D 11/10 |
· | Shot-number limiters

|  | F41D 11/12 |
· | Bolt buffer and recuperator means

|  | F41D 11/14 |
· | Loading mechanisms, i.e. for transferring cartridge from ready position to firing position

|  | F41D 11/16 |
· | Firing-pin construction; Firing-pin action

|  | F41D 11/18 |
· | Ventilating systems

|  | F41D 11/20 |
· | Cooling systems; Heating systems

|  | F41D 11/22 |
· | Synchronising for firing through the propeller of an aircraft

|  | F41D 11/24 |
· | Mountings (adaptations thereof for aircraft Fulltext... Hierarchy... Expanded...B64D)

|  | F41D 11/28 |
· | Testing apparatus; Checking apparatus