| IPC 7 English version |
| F41-F41A00710 |
F41A 9/00 - F41A 9/87  |
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| SECTION F – MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING |
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| F 41 | WEAPONS |
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| F 41 A | FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE [5] |
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| Notes |
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| (1) | This subclass covers those features or details which are considered to be of a kind generally applicable to, or to be concerned with intrinsic functions common to, both smallarms and ordnance. [5] |
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| (2) | Such features or details are classified in this subclass, even if they are stated to be applied only to smallarms or only to ordnance. [5] |
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| (3) | Attention is drawn to the definitions given in Note (2) following the title of class F41. [5] |
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| Subclass Index |
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| KINDS OF PROPULSION |
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| BREECH MECHANISMS |
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| UNLOCKING MECHANISMS |
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| GUN RECHARGERS, EXTERNALLY POWERED GUNS |
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| FEEDING OR LOADING, MAGAZINES |
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| ASSEMBLY FEATURES, MODULAR CONCEPTS, ARTICULATED OR COLLAPSIBLE GUNS |
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| COOLING, HEATING, VENTILATING, BLOWING TROUGH |
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| EXTRACTORS, EJECTORS |
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| SAFETY ARRANGEMENTS |
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| FIRING OR TRIGGER MECHANISMS, COCKING |
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| BARRELS, GUN TUBES, MUZZLE ATTACHMENTS |
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| GUN MOUNTINGS, e.g. on vehicles |
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| Permitting recoil |
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| Permitting elevation or traversing |
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| CLEANING OR LUBRICATING |
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| TESTING |
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| ADAPTATIONS FOR TRAINING |
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| OTHER ACCESSORIES OR DETAILS |
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1/ | 00 | Missile propulsion characterised by the use of explosive or combustible propellant charges (projecting missiles without use of explosive or combustible propellant charge F41B; launching rockets or torpedoes F41F 3/00; missile self-propulsion F42B 15/00) [5] |
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1/ | 02 | . | Hypervelocity missile propulsion using successive means for increasing the propulsive force, e.g. using successively initiated propellant charges arranged along the barrel length; Multistage missile propulsion [5] |
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1/ | 04 | . | Missile propulsion using the combustion of a liquid or gaseous fuel, e.g. hypergolic fuel [5] |
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1/ | 06 | . | Adjusting the range without varying elevation angle or propellant charge data, e.g. by venting a part of the propulsive charge gases, or by adjusting the capacity of the cartridge or combustion chamber [5] |
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1/ | 08 | . | Recoilless guns, i.e. guns having propulsion means producing no recoil [5] |
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1/ | 10 | . | . | a counter projectile being used to balance recoil [5] |
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3/ | 00 | Breech mechanism, e.g. locks [5] |
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3/ | 02 | . | Block action, i.e. the main breech opening movement being transverse to the barrel axis [5] |
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3/ | 04 | . | . | with pivoting breech-block [5] |
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3/ | 06 | . | . | . | about a horizontal axis transverse to the barrel axis at the rear of the block (F41A 3/08 takes precedence) [5] |
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3/ | 08 | . | . | . | carrying a rotably mounted obturating plug of the screw-thread or the interrupted-thread type (F41A 3/30 takes precedence) [5] |
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3/ | 10 | . | . | with sliding breech-block, e.g. vertically [5] |
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3/ | 12 | . | Bolt action, i.e. the main breech opening movement being parallel to the barrel axis [5] |
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3/ | 14 | . | . | Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively [5] |
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3/ | 16 | . | . | . | the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks [5] |
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3/ | 18 | . | . | . | . | hand-operated [5] |
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3/ | 20 | . | . | . | . | . | Straight-pull operated bolt locks, i.e. the operating hand effecting only a straight movement parallel to the barrel axis [5] |
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3/ | 22 | . | . | . | . | . | the locking being effected by rotating the operating handle or lever transversely to the barrel axis [5] |
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3/ | 24 | . | . | . | . | . | . | the locking elements forming part of the operating handle or lever [5] |
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3/ | 26 | . | . | . | . | semi-automatically or automatically operated, e.g. having a slidable bolt-carrier and a rotatable bolt [5] |
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3/ | 28 | . | . | . | . | . | having fixed locking elements on the non-rotating bolt and rotating locking elements mounted on the barrel or breech housing, e.g. rotatable rings [5] |
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3/ | 30 | . | . | . | . | Interlocking means, e.g. locking lugs, screw threads [5] |
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3/ | 32 | . | . | . | the bolt being rocked about a notional axis transverse to the barrel axis [5] |
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3/ | 34 | . | . | . | the bolt additionally effecting a sliding movement transverse to the barrel axis [5] |
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3/ | 36 | . | . | Semi-rigid bolt locks, i.e. having locking elements movably mounted on the bolt or on the barrrel or breech housing [5] |
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3/ | 38 | . | . | . | having rocking locking elements, e.g. pivoting levers or vanes [5] |
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3/ | 40 | . | . | . | . | mounted on the bolt (F41A 3/42 takes precedence) [5] |
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3/ | 42 | . | . | . | . | hand-operated [5] |
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3/ | 44 | . | . | . | having sliding locking elements, e.g. balls, rollers [5] |
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3/ | 46 | . | . | . | . | mounted on the bolt (F41A 3/48 takes precedence) [5] |
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3/ | 48 | . | . | . | . | hand-operated [5] |
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3/ | 50 | . | . | . | Toggle-joint locks, e.g. crank-operated [5] |
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3/ | 52 | . | . | . | . | hand-operated [5] |
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3/ | 54 | . | . | Bolt locks of the unlocked type, i.e. being inertia operated [5] |
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3/ | 56 | . | . | . | the bolt being provided with an additional slidable mass [5] |
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3/ | 58 | . | Breakdown breech mechanisms, e.g. for shotguns [5] |
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3/ | 60 | . | Breech mechanisms for guns having two or more barrels (F41A 3/58 takes precedence; for revolving-cannon guns F41F 1/10) [5] |
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3/ | 62 | . | using combustion gas pressure for adding to the mechanical locking action, or for delaying breech opening movement [5] |
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3/ | 64 | . | Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings [5] |
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3/ | 66 | . | . | Breech housings or frames; Receivers [5] |
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3/ | 68 | . | . | Bolt stops, i.e. means for limiting bolt opening movement [5] |
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3/ | 70 | . | . | Anti-rebound arrangements, i.e. preventing rebound of the bolt out of the firing position [5] |
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3/ | 72 | . | . | Operating handles or levers; Mounting thereof in breech-blocks or bolts [5] |
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3/ | 74 | . | . | Obturating or packing devices for gas leak prevention in breech mechanisms [5] |
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3/ | 76 | . | . | . | specially adapted for sealing the gap between the forward end of the cartridge chamber and the rearward end of the barrel, e.g. sealing devices for revolvers or revolver-type guns [5] |
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3/ | 78 | . | . | Bolt buffer or recuperator means [5] |
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3/ | 80 | . | . | . | Adjustable spring buffers [5] |
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3/ | 82 | . | . | . | Coil spring buffers (F41A 3/80 takes precedence) [5] |
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3/ | 84 | . | . | . | . | mounted within the gun stock [5] |
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3/ | 86 | . | . | . | . | mounted under the barrel [5] |
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3/ | 88 | . | . | . | . | mounted around the barrel [5] |
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3/ | 90 | . | . | . | Fluid buffers [5] |
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3/ | 92 | . | . | . | . | adjustable [5] |
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3/ | 94 | . | . | . | . | in combination with spring buffers [5] |
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5/ | 00 | Mechanisms or systems operated by propellant charge energy for automatically opening the lock [5] |
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5/ | 02 | . | recoil-operated [5] |
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5/ | 04 | . | . | the barrel being tilted during recoil [5] |
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5/ | 06 | . | . | the barrel being rotated about its longitudinal axis during recoil [5] |
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5/ | 08 | . | . | having an accelerator lever acting on the breech-block or bolt during the opening movement [5] |
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5/ | 10 | . | . | having a movable inertia weight [5] |
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5/ | 12 | . | . | . | mounted in a gun having a fixed barrel [5] |
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5/ | 14 | . | . | Barrel stops, i.e. devices for holding the recoiling barrel in a predetermined position, e.g. the recoil position [5] |
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5/ | 16 | . | . | having a barrel moving forwardly after the firing of a shot [5] |
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5/ | 18 | . | gas-operated [5] |
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5/ | 20 | . | . | using a gas piston arranged concentrically around the barrel [5] |
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5/ | 22 | . | . | having two or more gas pistons [5] |
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5/ | 24 | . | . | by direct action of gas pressure on bolt or locking elements [5] |
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5/ | 26 | . | . | Arrangements or systems for bleeding the gas from the barrel (F41A 5/20 to F41A 5/24 take precedence) [5] |
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5/ | 28 | . | . | . | Adjustable systems [5] |
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5/ | 30 | . | Gas- or recoil-operation, e.g. selection of gas- or recoil-operated systems [5] |
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5/ | 32 | . | Energy accumulator systems, i.e. systems for opening the breech-block by energy accumulated during barrel or gas piston recoil [5] |
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5/ | 34 | . | . | with spring accumulators [5] |
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5/ | 36 | . | . | with fluid accumulators [5] |
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7/ | 00 | Auxiliary mechanisms for bringing the breech-block or bolt or the barrel to the starting position before automatic firing; Drives for externally-powered guns; Remote-controlled gun chargers [5] |
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7/ | 02 | . | Machine-gun rechargers, e.g. manually operated (F41A 3/72 takes precedence) [5] |
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7/ | 04 | . | . | fluid operated [5] |
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7/ | 06 | . | . | electrically operated [5] |
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7/ | 08 | . | Drives for externally-powered guns, i.e. drives for moving the breech-block or bolt by an external force during automatic firing [5] |
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7/ | 10 | . | . | using a rotating cylindrical drum having a camming groove (F41F 1/10 takes precedence) [5] |
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 | F41A 9/00 - F41A 9/87 |
