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IPC 7
 
F41-F41A00710
  F41A 9/00 - F41A 9/87  

SECTION F – MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING


F 41WEAPONS


F 41 AFUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE  [5]


Notes

(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]

(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]

(3)Attention is drawn to the definitions given in Note (2) following the title of class F41.  [5]


Subclass Index

KINDS OF PROPULSION 

F41A 1/00 

BREECH MECHANISMS 

F41A 3/00 

UNLOCKING MECHANISMS 

F41A 5/00 

GUN RECHARGERS, EXTERNALLY POWERED GUNS 

F41A 7/00 

FEEDING OR LOADING, MAGAZINES 

F41A 9/00 

ASSEMBLY FEATURES, MODULAR CONCEPTS, ARTICULATED OR COLLAPSIBLE GUNS 

F41A 11/00 

COOLING, HEATING, VENTILATING, BLOWING TROUGH 

F41A 13/00 

EXTRACTORS, EJECTORS 

F41A 15/00 

SAFETY ARRANGEMENTS 

F41A 17/00 

FIRING OR TRIGGER MECHANISMS, COCKING 

F41A 19/00 

BARRELS, GUN TUBES, MUZZLE ATTACHMENTS 

F41A 21/00 

GUN MOUNTINGS, e.g. on vehicles 

F41A 23/00 

Permitting recoil 

F41A 25/00 

Permitting elevation or traversing 

F41A 27/00 

CLEANING OR LUBRICATING 

F41A 29/00 

TESTING 

F41A 31/00 

ADAPTATIONS FOR TRAINING 

F41A 33/00 

OTHER ACCESSORIES OR DETAILS 

F41A 35/00 



1/

00Missile 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]

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]

1/

04.Missile propulsion using the combustion of a liquid or gaseous fuel, e.g. hypergolic fuel  [5]

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]

1/

08.Recoilless guns, i.e. guns having propulsion means producing no recoil  [5]

1/

10..a counter projectile being used to balance recoil  [5]


3/

00Breech mechanism, e.g. locks  [5]

3/

02.Block action, i.e. the main breech opening movement being transverse to the barrel axis  [5]

3/

04..with pivoting breech-block  [5]

3/

06...about a horizontal axis transverse to the barrel axis at the rear of the block (F41A 3/08 takes precedence)  [5]

3/

08...carrying a rotably mounted obturating plug of the screw-thread or the interrupted-thread type (F41A 3/30 takes precedence)  [5]

3/

10..with sliding breech-block, e.g. vertically  [5]

3/

12.Bolt action, i.e. the main breech opening movement being parallel to the barrel axis  [5]

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]

3/

16...the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks  [5]

3/

18....hand-operated  [5]

3/

20.....Straight-pull operated bolt locks, i.e. the operating hand effecting only a straight movement parallel to the barrel axis  [5]

3/

22.....the locking being effected by rotating the operating handle or lever transversely to the barrel axis  [5]

3/

24......the locking elements forming part of the operating handle or lever  [5]

3/

26....semi-automatically or automatically operated, e.g. having a slidable bolt-carrier and a rotatable bolt  [5]

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]

3/

30....Interlocking means, e.g. locking lugs, screw threads  [5]

3/

32...the bolt being rocked about a notional axis transverse to the barrel axis  [5]

3/

34...the bolt additionally effecting a sliding movement transverse to the barrel axis  [5]

3/

36..Semi-rigid bolt locks, i.e. having locking elements movably mounted on the bolt or on the barrrel or breech housing  [5]

3/

38...having rocking locking elements, e.g. pivoting levers or vanes  [5]

3/

40....mounted on the bolt (F41A 3/42 takes precedence)  [5]

3/

42....hand-operated  [5]

3/

44...having sliding locking elements, e.g. balls, rollers  [5]

3/

46....mounted on the bolt (F41A 3/48 takes precedence)  [5]

3/

48....hand-operated  [5]

3/

50...Toggle-joint locks, e.g. crank-operated  [5]

3/

52....hand-operated  [5]

3/

54..Bolt locks of the unlocked type, i.e. being inertia operated  [5]

3/

56...the bolt being provided with an additional slidable mass  [5]

3/

58.Breakdown breech mechanisms, e.g. for shotguns  [5]

3/

60.Breech mechanisms for guns having two or more barrels (F41A 3/58 takes precedence; for revolving-cannon guns F41F 1/10)  [5]

3/

62.using combustion gas pressure for adding to the mechanical locking action, or for delaying breech opening movement  [5]

3/

64.Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings  [5]

3/

66..Breech housings or frames; Receivers  [5]

3/

68..Bolt stops, i.e. means for limiting bolt opening movement  [5]

3/

70..Anti-rebound arrangements, i.e. preventing rebound of the bolt out of the firing position  [5]

3/

72..Operating handles or levers; Mounting thereof in breech-blocks or bolts  [5]

3/

74..Obturating or packing devices for gas leak prevention in breech mechanisms  [5]

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]

3/

78..Bolt buffer or recuperator means  [5]

3/

80...Adjustable spring buffers  [5]

3/

82...Coil spring buffers (F41A 3/80 takes precedence)  [5]

3/

84....mounted within the gun stock  [5]

3/

86....mounted under the barrel  [5]

3/

88....mounted around the barrel  [5]

3/

90...Fluid buffers  [5]

3/

92....adjustable  [5]

3/

94....in combination with spring buffers  [5]


5/

00Mechanisms or systems operated by propellant charge energy for automatically opening the lock  [5]

5/

02.recoil-operated  [5]

5/

04..the barrel being tilted during recoil  [5]

5/

06..the barrel being rotated about its longitudinal axis during recoil  [5]

5/

08..having an accelerator lever acting on the breech-block or bolt during the opening movement  [5]

5/

10..having a movable inertia weight  [5]

5/

12...mounted in a gun having a fixed barrel  [5]

5/

14..Barrel stops, i.e. devices for holding the recoiling barrel in a predetermined position, e.g. the recoil position  [5]

5/

16..having a barrel moving forwardly after the firing of a shot  [5]

5/

18.gas-operated  [5]

5/

20..using a gas piston arranged concentrically around the barrel  [5]

5/

22..having two or more gas pistons  [5]

5/

24..by direct action of gas pressure on bolt or locking elements  [5]

5/

26..Arrangements or systems for bleeding the gas from the barrel (F41A 5/20 to F41A 5/24 take precedence)  [5]

5/

28...Adjustable systems  [5]

5/

30.Gas- or recoil-operation, e.g. selection of gas- or recoil-operated systems  [5]

5/

32.Energy accumulator systems, i.e. systems for opening the breech-block by energy accumulated during barrel or gas piston recoil  [5]

5/

34..with spring accumulators  [5]

5/

36..with fluid accumulators  [5]


7/

00Auxiliary 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]

7/

02.Machine-gun rechargers, e.g. manually operated (F41A 3/72 takes precedence)  [5]

7/

04..fluid operated  [5]

7/

06..electrically operated  [5]

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]

7/

10..using a rotating cylindrical drum having a camming groove (F41F 1/10 takes precedence)  [5]

   F41A 9/00 - F41A 9/87  
 

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