U.S. PATENT AND TRADEMARK OFFICE
Information Products Division
[Manual of Classification, Class Listing] [Manual of Classification, Class 042] [Classification Definitions, Class Listing] [USPTO Home Page]

U.S. Patent Classification System - Classification Definitions
as of June 30, 2000

[Explanation of Data]

Patents classified in a subclass may be accessed by either clicking on the subclass number
preceding each subclass definition or on the " [Patents] " icon, below.
( please note that patents for some subclasses may not be available )

For classification search strategies, please refer to the Classification Index Explanation of Data web page.

(definitions have been obtained from the Patents ASSIST CD-ROM which is produced by the U.S. Patent and Trademark Office Electronic Products Branch)


Class 042

FIREARMS


Class Definition:
This class includes all the portable firearms, i.e., those which are supported by hand when operated, such as shoulder guns, pistols, toy firearms and cane guns, except the automatic or explosion-operated firearms. This class also has such firearms combined with cleaners, intrenching devices, bayonets, and other cutters (including specifically pistol-swords). The following devices are likewise found here either, per se, or in combination with the firearm; ram rods, gun-rests and some body supported arm rests.

REFERENCES TO OTHER CLASSES

SEE OR SEARCH CLASS:
7, Compound Tools, subclass 158 for hand manipulable cutters (including bayonets) combined with other tools.
15, Brushing, Scrubbing, and General Cleaning, subclass 104.05 for gun cleaners.
30, Cutlery, pertinent subclasses, for hand manipulable cutters (including bayonets), per se, and subclasses 142+ for the combination of two or more cutters.
33, Geometrical Instruments, subclasses 233+ for gun sights, per se, and gun and sight combinations where only so much gun structure is included as is necessary to accommodate the sight and subclass 244 for a gun sight cover.
60, Power Plants, subclasses 632+, for one shot explosion actuated expansible chamber type motors.
81, Tools, subclass 3.05 and the notes thereto appended for shell projectile or wad extractors.
86, Ammunition and Explosive-Charge Making.
89, Ordnance, for heavier mounted guns, subclass 14.1 for all barrels with heat exchangers, and subclasses 125+ for automatic or explosion-operated firearms.
102, Ammunition and Explosives, appropriate subclasses, for gun projectiles, per se.
124, Mechanical Guns and Projectors, for mechanical projectile throwing or impelling apparatus in which the propelling agent is nonexplosive.
206, Special Receptacle or Package, subclass 317 for a weapon container (e.g., gun case).
221, Article Dispensing, subclass 24 for article dispensers shaped to simulate various figures and which may include firearm simulations. Also, see the class definition of Class 221 for article dispensers in other classes related to magazine feed in general.
222, Dispensing, subclass 79 for dispensers simulating firearms, e.g., water pistols, and subclass 192 for dispensers combined with firearms where only so much of the firearm as is necessary to support or operate the dispenser is claimed.
294, Handling: Hand and Hoist-Line Implements, subclasses 49+ for intrenching tools of the shovel type.


SUBCLASSES


Subclass: 1.01 [Patents]

INDICATORS:
This subclass is indented under the class definition. Devices having means to convey information to one of the senses.

Subclass: 1.02 [Patents]

Magazine shot:
This subclass is indented under subclass 1.01. Devices comprising a compartment which holds ammunition ready for chambering and having means for indicating the presence or absence of ammunition or for indicating the number of ammunition rounds left or spent from the compartment.

Subclass: 1.03 [Patents]

Single shot, e.g., digital type:
This subclass is indented under subclass 1.01. Devices having means for either indicating the total number of shots discharged from the firearm or whether a projectile has been fired.

Subclass: 1.04 [Patents]

Hammer position:
This subclass is indented under subclass 1.01. Devices having means to designate the position of that part of the firing
mechanism of a gun that strikes the firing pin or cartridge primer.

Subclass: 1.05 [Patents]

Chamber status:
This subclass is indented under subclass 1.01. Devices having means to designate the presence or absence of ammunition in that part of a gun in which the ammunition is placed for firing.

Subclass: 1.06 [Patents]

WITH RECOIL REDUCER:
This subclass is indented under the class definition. Devices having means to decrease the reaction of a gun after being discharged.
(1) Note. Recoil, particularly as pertains to small firearms, is popularly called "kick".

SEE OR SEARCH THIS CLASS, SUBCLASS:
74 for cushioned stocks.

Subclass: 1.07 [Patents]

WITH ADJUSTABLE HEAD SPACE:
This subclass is indented under the class definition. Devices having adjustable means to compensate for the distance between the face of the locked bolt or breech block of a firearm and some specified point in the chamber.
(1) Note. With guns designed for rimless, bottlenecked cartridges, head space is the space between the bolt face and specified point on the shoulder of the chamber; with guns using rimmed cartridges, the head space between the bolt face and the ridge or abutment in the chamber against which the rim rests; and with guns using rimless straight-case cartridges, the space between the bolt face and the ridge or point in the chamber where the mouth of the cartridge case rests.

Subclass: 1.08 [Patents]

FOR DISCHARGING A STUNNING AGENT:
This subclass is indented under the class definition. Firearms specifically designed to fire a projectile containing a gas or other medium so as to render physical insensibility to any one of the senses.

Subclass: 1.09 [Patents]

DISGUISED AS BODY ARTICLE:
This subclass is indented under the class definition. Firearms concealable in such a manner as to appear as an object normally worn, or carried by person, e.g., pen gun, watch, etc.

Subclass: 1.11 [Patents]

BODY BORNE REMOTE OPERATED:
This subclass is indented under the class definition. Firearms attachable to some part of the body and discharged from or by another part of the body.

Subclass: 1.12 [Patents]

CATTLE SLAUGHTER TYPE:
This subclass is indented under the class definition. Firearms specifically designed to discharged a projectile solely for the purpose of the humane slaughter of animals.

Subclass: 1.13 [Patents]

TRIP, TRAP OR BURGLARY PREVENTION:
This subclass is indented under the class definition. Devices including hidden means attached to a firearm device which can discharge the firearm from a remote area when the hidden means are disturbed.

Subclass: 1.14 [Patents]

UNDERWATER TYPE:
This subclass is indented under the class definition. Firearms adapted to be used and/or discharge in subaqueous conditions, e.g., spear guns, share cartridges, etc.

SEE OR SEARCH CLASS:
43, Fishing, Trapping, and Vermin Destroying, subclasses 6+ for fishing with harpoons and spears.
102, Ammunition and Explosives, subclass 399 for marine-type projectiles.
124, Mechanical Guns and Projectors, appropriate subclass.

Subclass: 1.15 [Patents]

FLARE TYPE GUN:
This subclass is indented under the class definition. Firearms particularly adapted to discharge a pyrotechnic medium designed to produce a source or light.

Subclass: 1.16 [Patents]

BILLY CLUB TYPE:
This subclass is indented under the class definition. Firearms disguised as a wooden club which would normally be used by policeman.

Subclass: 2 [Patents]

Miscellaneous firearms adapted for loading at the breech. The subclasses under this title, except those of the spring-motor guns, and the grip-magazine pistols, are based on the movements of the breechblock or barrel in opening the breech. Features of magazine structure may be found in any of the magazine subclasses.

SEE OR SEARCH THIS CLASS, SUBCLASS:
75 for frame and barrel fastenings for take-down purposes only. Where the barrel must be separated from the frame for the purpose of loading and unloading, the patent is in this subclass (2).

Subclass: 5 [Patents]

Firearms in which a spring, which is wound up, is utilized to furnish the power for opening the breech, usually by sliding the breechblock rearward, ejecting the shell, reloading and closing the breech. Usually one winding of the spring is
sufficient for a magazine full of cartridges.

Subclass: 6 [Patents]

Miscellaneous breech-loading magazine-guns not classifiable in any of the other subclasses of magazine-guns.

SEE OR SEARCH THIS CLASS, SUBCLASS:
5 and 7.

Subclass: 7 [Patents]

The magazine is placed in the handle or grip of the pistol. Usually the breech-block slides rearward or the barrel forward to open the breech.

SEE OR SEARCH CLASS:
16, Miscellaneous Hardware, subclass 111.1 and the notes thereto appended for handles which also serve as receptacles.
89, Ordnance, subclasses 195+ for automatic guns of the grip magazine type.

Subclass: 8 [Patents]

"Breakdown" guns in which the hinge is located at the breech.

Subclass: 9 [Patents]

The breechblock turns about a central fixed axis, which is perpendicular to the longitudinal axis of the barrel like a faucet valve, to open and close the breech. The charge is sometimes received in this block and there retained when fired. In other cases the block closes the breech containing the charge.

Subclass: 10 [Patents]

The barrel slides forward to open the breech.

SEE OR SEARCH CLASS:
89, Ordnance, subclass 161 for automatic guns of this type.

Subclass: 11 [Patents]

Magazine-guns in which the barrel slides forward to open the breech, this movement also operating to reload the gun from the magazine.

Subclass: 12 [Patents]

The barrel, to open the breech, is made to swing to one side.

Subclass: 13 [Patents]

The barrel, to open the breech, is made to swing to one side on a pivot, or axis parallel to the length or axis of the barrel.

Subclass: 14 [Patents]

The breechblock is made to slide in guides to open or close the breech.

Subclass: 15 [Patents]

This subclass is indented under subclass 14. Firearms having a chamber which is movable relative to the barrel and surrounds or holds a cartridge or load in firing position, and which may be integral with, connected to, or separate from, the sliding breechblock.
(1) Note. This subclass also includes sectional chambers if at least one section is movable relative to the barrel.
(2) Note. A magazine as distinguished from a chamber, does not hold the cartridge or load in firing position.

SEE OR SEARCH THIS CLASS, SUBCLASS:
27 and 39.5, for other firearms having movable chambers.
subclasses 59+ for all firearms, whether breech or muzzle loaded, having a revolving cylinder adapted to hold two or
more cartridges and to bring each successively to firing position.

SEE OR SEARCH CLASS:
89, Ordnance, subclasses 155+ for automatic guns with movable chambers.

Subclass: 16 [Patents]

The breechblock, in opening the breech, is made to slide rearward substantially in line with the barrel.

SEE OR SEARCH THIS CLASS, SUBCLASS:
5 and 7.

Subclass: 17 [Patents]

Magazine-guns having a breechblock made to slide rearward substantially in line with the gun-barrel.

SEE OR SEARCH THIS CLASS, SUBCLASS:
5 and 7.

Subclass: 18 [Patents]

The magazine is of the side-feeding or "box" type.

SEE OR SEARCH THIS CLASS, SUBCLASS:
5 and 7.

Subclass: 19 [Patents]

Firearms in which a rotary magazine, like a revolver-cylinder, is employed to bring the cartridges successively to position in line with the breech, where they are pushed into the barrel by the returning breechblock. In revolvers the cartridges are retained in the cylinder when fired.

SEE OR SEARCH THIS CLASS, SUBCLASS:
59

Subclass: 20 [Patents]

Guns of this type in which a pivoted hammer is employed to strike the charge or a firing-pin which transmits the blow to the charge.

SEE OR SEARCH THIS CLASS, SUBCLASS:
5 and 7.

Subclass: 21 [Patents]

Magazine-guns of the type in the preceding subclass.

Subclass: 22 [Patents]

Magazine-guns with this breech-block movement which have the side-feeding or "box" magazine.

SEE OR SEARCH THIS CLASS, SUBCLASS:
5 and 7.

Subclass: 23 [Patents]

The breech-block, in opening the breech, slides vertically in a mortise.

Subclass: 24 [Patents]

Magazine-guns which have the breechblock fitted to slide in a vertical mortise.

Subclass: 25 [Patents]

Shell-extracting devices pertaining to this type of gun.

Subclass: 26 [Patents]

The breech-block is hinged or pivoted and made to swing to open the breech.

Subclass: 27 [Patents]

This subclass is indented under subclass 26. Firearms having a chamber which is movable relative to the barrel and which surrounds or holds a cartridge or load in firing position, and which may be integral with, connected to, or separated from, the swinging breechblock.

SEE OR SEARCH THIS CLASS, SUBCLASS:
15 39.5 and 59+, and see the notes under subclass 15.

Subclass: 28 [Patents]

The breech-block being pivoted at its rear end, its front end swings downward and to the rear to uncover the breech.

Subclass: 29 [Patents]

Magazine-guns in which the breech-block is pivoted at its rear end, so its front end swings downward and to the rear.

Subclass: 30 [Patents]

The breech-block, pivoted at its forward end, swings outward and forward at its rear end to open the breech.

Subclass: 31 [Patents]

The breech-block is pivoted at its rear end, and its front end swings outward and to the rear to open the breech.

Subclass: 32 [Patents]

The breech-block, to open the breech, swings on a pivot or hinge which is parallel with the gun-barrel axis.

Subclass: 33 [Patents]

Magazine-guns in which the breech-block, to open the breech, swings on a pivot or hinge which is parallel to the gun-axis.

Subclass: 34 [Patents]

The breech-block is pivoted below the gun- axis, and the upper part of the block, to open the breech, swings rearward and downward.

Subclass: 35 [Patents]

Magazine-guns in which the breech-block, to open the breech, swings to the rear and downward.

Subclass: 36 [Patents]

The breech-block is pivoted at its forward part, and, to open the breech, its rearward part swings upward and forward.

Subclass: 37 [Patents]

Magazine-guns in which the breech-block is pivoted at its forward part and, to open the breech, swings the rearward part upward and forward.

Subclass: 38 [Patents]

The breech-block is pivoted at the rear end, and to open the breech, its forward end swings upward and to the rear.

Subclass: 39 [Patents]

Magazine-guns in which the breech-block is pivoted at its rear end. To open the breech, its forward end swings upward and to the rear.

Subclass: 39.5 [Patents]

This subclass is indented under subclass 2. Firearms having a chamber which is movable relative to the barrel and which surrounds or holds the cartridge or load in firing position.
(1) Note. Plural chambers carried by endless carriers and moved by star wheels or formed by tangential contact of two cylinders having complementary grooves, are in this subclass
rather than subclasses 59+.

SEE OR SEARCH THIS CLASS, SUBCLASS:
15 27 and 59+, and see the notes under subclass 15.

Subclass: 40 [Patents]

The barrel is pivoted to the stock at a point in advance of the breech, and, to open the breech, the barrel swings on this pivot, the muzzle downward and breech upward. These are often styled "breakdown" guns.

Subclass: 41 [Patents]

This subclass is indented under subclass 40. Guns having means functioning to ignite or to control the igniting of the charge.
(1) Note. The term "lock" is sometimes used to designate firing mechanism, particularly in the older patents.

SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 65+ for firing mechanism limited to revolvers.
subclasses 69+ for firing mechanism not limited to revolvers nor to upward swinging breech guns.

Subclass: 42.01 [Patents]

With single actuator:
This subclass is indented under subclass 41. Devices having a single trigger that is interconnected to two or more firing train mechanisms of a firearm which is comprised of plural barrels and may be discharged either simultaneously or sequentially.

Subclass: 42.02 [Patents]

Plural triggers:
This subclass is indented under subclass 42.01. Devices wherein the plural triggers are interconnected to a firing train mechanism and plural triggers are operated by a single trigger actuator.

Subclass: 42.03 [Patents]

Single trigger and hammer:
This subclass is indented under subclass 42.01. Devices wherein a single trigger actuator is utilized to operate the firing train mechanism device which discharges each of the plural barrels.

Subclass: 43 [Patents]

In the breaking down of the gun or in closing the breech the hammer is cocked.

Subclass: 44 [Patents]

Devices for holding or locking the breech in the closed position.

Subclass: 45 [Patents]

Barrel-locking devices which also operate to cock or partly cock the hammer.

Subclass: 46 [Patents]

Shell-extracting mechanism usually operated by the breakdown of the gun.

Subclass: 47 [Patents]

Mechanism, usually operated by the breakdown of the gun, for throwing out or ejecting the cartridge-shells.

Subclass: 48 [Patents]

The ejector is struck by an ejector hammer, usually in breaking down the gun, and thus throws out the
cartridge-shells.

Subclass: 49.01 [Patents]

Magazines:
This subclass is indented under subclass 2. Devices comprising a dtructure or compartment for storing ammunition or explosives ready for chambering and which may be detachable or nondetachable to the firearm.

SEE OR SEARCH THIS CLASS, SUBCLASS:
6 for magazines guns.
11 17, 18, 21, and 22, for breech loading firearm type magazines.
subclasses 59+ for revolving cylinders containing cartridges.
subclasses 87+ for magazine chargers.

SEE OR SEARCH CLASS:
89, Ordnance, subclass 33.01 for cartridge feeding devices.

Subclass: 49.02 [Patents]

Adapters or capacity reducers:
This subclass is indented under subclass 49.01. Devices including structure which provides for the feeding and firing of difference size caliber rounds within the firearm.

SEE OR SEARCH THIS CLASS, SUBCLASS:
16 for bolt adapters.
77 for barrel adapters.

Subclass: 50 [Patents]

The novelty resides solely in the magazine, of the side-feeding or "box" type.

SEE OR SEARCH THIS CLASS, SUBCLASS:
88

Subclass: 51 [Patents]

Firearms which can be loaded only through the muzzle.

Subclass: 52 [Patents]

Walking-canes, which are adapted also to be used as firearms.

Subclass: 53 [Patents]

Those pistols which combine therewith a sword or knife attachment.

SEE OR SEARCH CLASS:
30, Cutlery, appropriate subclasses for cutters not attached to or combined with a gun.

Subclass: 54 [Patents]

Devices--such as toy pistols, cannon, etc., -- made to imitate firearms and which either fire an explosive, like a cap or match, by means of some sort of a lock or which have a barrel in which an explosive is placed and fired.

SEE OR SEARCH CLASS:
102, Ammunition and Explosives, subclasses 202+ for caps for toy firearms.
124, Mechanical Guns and Projectors, subclass 2 for spring or air guns which project a missile and also explode a cap.
222, Dispensing, subclass 79 for simulated firearms, e.g., water pistols, and subclass 192 for dispensers (other than cartridge magazines) combined with firearms where only so much of the firearm as is necessary to support or operate the dispenser is claimed.
446, Amusement Devices: Toys, subclasses 398+ for cap-exploding toy which do not simulate firearms; and subclass 473 for toy firearms which do not explode caps.

Subclass: 55 [Patents]

Devices made in imitation of cannon, mortars, etc., and adapted to hold an explosive charge, generally a firecracker. A projectile may or may not be used.

SEE OR SEARCH CLASS:
124, Mechanical Guns and Projectors, subclass 29 for devices made in imitation of pieces of ordnance adapted to project a missile by some mechanical means.

Subclass: 57 [Patents]

The device is adapted to receive a "ribbon" of the explosives or caps and feed this ribbon as the caps are successively exploded by the hammer.

Subclass: 58 [Patents]

The toy is made to imitate a revolver.

Subclass: 59 [Patents]

Pistols or rifles in which there is a revolving cylinder adapted to carry a plurality of loads and bring each load successively to firing position.

SEE OR SEARCH THIS CLASS, SUBCLASS:
39.5 for plural chambers carried by endless chains or formed by tangential contact of two cylinders having complementary grooves.

SEE OR SEARCH CLASS:
89, Ordnance, subclass 13.05 for machine guns with revolving cylinders, and subclasses 155+ for automatic guns with movable chambers.

Subclass: 60 [Patents]

The revolver carries a fixed magazine from which the cylinder is supplied or fed.

SEE OR SEARCH THIS CLASS, SUBCLASS:
19

Subclass: 61 [Patents]

The cylinder can be loaded only from the forward end.

Subclass: 62 [Patents]

The cylinder swings outward to reload, clean, etc.

Subclass: 63 [Patents]

Revolvers of the breakdown type.

Subclass: 64 [Patents]

Devices for locking or holding the barrel in its closed operative position.

Subclass: 65 [Patents]

This subclass is indented under subclass 59. Guns having means functioning to ignite or to control the igniting of the charge.
(1) Note. The term "lock" is sometimes used to designate firing mechanism, particularly in the older patents.

SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 41+ for firing mechanism limited to upward swinging breech guns.
subclasses 69+ for firing mechanism not limited to upward swinging breach guns nor to revolvers.

Subclass: 66 [Patents]

Arrangements for preventing premature explosion of the charge.

SEE OR SEARCH THIS CLASS, SUBCLASS:
83

Subclass: 67 [Patents]

Devices for checking the revolution of the cylinder and holding it during the firing.

Subclass: 68 [Patents]

Shell-extracting mechanism.

Subclass: 69.01 [Patents]

FIRING MECHANISM:
This subclass is indented under the class definition. Devices having devices which enable the firing train mechanism or any part thereof to be actuated to discharge the firearm.

Subclass: 69.02 [Patents]

Rearward sliding breech bolt:
This subclass is indented under subclass 69.01. Devices wherein the firearm has a rearwardly sliding breech bolt for closing the rear part of the barrel during firing.

Subclass: 69.03 [Patents]

With pivoted hammer:
This subclass is indented under subclass 69.02. Devices wherein the firing train includes a pivoted hammer for striking a firing pin.

Subclass: 70.01 [Patents]

SAFETY MECHANISM:
This subclass is indented under the class definition. Devices having means for temporarily securing some part of a firearm to render it inoperative.

SEE OR SEARCH THIS CLASS, SUBCLASS:
41 65+ and 69.01+, for other types of safety devices on the firearm.

SEE OR SEARCH CLASS:
89, Ordnance, subclasses 137+, 142 and 148 to 154 for safety devices used in automatic guns.

Subclass: 70.02 [Patents]

Magazine operated:
This subclass is indented under subclass 70.01. Devices wherein the security mechanism for rendering the firearm inoperative is operated by the magazine or some element thereof.

Subclass: 70.03 [Patents]

Shoulder operated:
This subclass is indented under subclass 70.01. Devices wherein a hand held firearm includes mechanism in the butt end of the firearm that is activated from a security condition to an operative condition by bracing the butt end against the shoulder of a person firing the firearm.

Subclass: 70.04 [Patents]

Sear trigger lock:
This subclass is indented under subclass 70.01. Devices wherein the security mechanism prevents movement of the firing train by preventing the operation of both the trigger and the sear device.
(1) Note. Sear is the part or device which engages the hammer, striker or other firing device and holds it in the cocked position until firing is desired. The sear is disengaged to cause firing by trigger movement.

Subclass: 70.05 [Patents]

Sear lock:
This subclass is indented under subclass 70.01. Devices wherein the security mechanism prevents movement of the
firing train by preventing the operation or movement of the sear device.

Subclass: 70.06 [Patents]

Trigger lock:
This subclass is indented under subclass 70.01. Devices including means that prevent the trigger device of a firearm from movement.

Subclass: 70.07 [Patents]

On trigger guard:
This subclass is indented under subclass 70.01. Devices wherein the firearm includes a protective device over the trigger and further includes means to cover the protective device so as to prevent access to the trigger.

Subclass: 70.08 [Patents]

Hammer of firing pin:
This subclass is indented under subclass 70.01. Devices wherein the security mechanism is located on or engages that part of the firing mechanism that strikes the firing pin or percussion cap to prevent discharging the firearm.

Subclass: 70.09 [Patents]

Responsive to particular firing angle:
This subclass is indented under subclass 70.01. Devices having means which prevent the firearm from being discharged unless the firearm is disposed at a particular elevation.

Subclass: 70.11 [Patents]

Firearm lock:
This subclass is indented under subclass 70.01. Devices designed to prevent the use of the firearm.

Subclass: 71.01 [Patents]

STOCKS:
This subclass is indented under the class definition. Devices comprising supporting framework or structure which is normally attached to a firearm for supporting the barrel and receiver of the firearm.

Subclass: 71.02 [Patents]

For pistols:
This subclass is indented under subclass 71.01. Devices wherein the framework or structure is designed to support a small caliber firearm which is held and fired with one hand.

SEE OR SEARCH THIS CLASS, SUBCLASS:
7 for pistol grip magazines.

Subclass: 72 [Patents]

Additional or auxiliary stocks to be attached usually to pistol-handles to convert them into shoulder-guns.

Subclass: 73 [Patents]

Adjustably-attached stocks to permit varying the angle between the stock and barrel.

Subclass: 74 [Patents]

Rubber, spring, air, or other cushioned gunbutt to diminish the effect of the recoil or "kick" of the gun.

Subclass: 75.01 [Patents]

STOCK OR BARREL CONNECTORS:
This subclass is indented under the class definition. Devices having means for fastening the stock of a firearm, the receiver and/or the barrel to each other.
(1) Note. A receiver is that part of the gun which contains the firing mechanism and the stock and barrel are connected thereto.

Subclass: 75.02 [Patents]

Barrel to receiver:
This subclass is indented under subclass 75.01. Devices having means for fastening the barrel of a firearm to the receiver.

Subclass: 75.03 [Patents]

Receiver to stock:
This subclass is indented under subclass 75.01. Devices having means for fastening the receiver to the stock.

Subclass: 75.04 [Patents]

Hinged or pivoted barrel:
This subclass is indented under subclass 75.01. Devices wherein the barrel may be moved in any direction about an axis relative to the stock and/or receiver.

Subclass: 76.01 [Patents]

BARRELS:
This subclass is indented under the class definition. Device comprising a tubular structure through which a projectile is fired.
(1) Note. Included in this subclass are barrels having means for uniting two or more barrels.

SEE OR SEARCH CLASS:
89, Ordnance, subclass 14.05 for barrels and barrel structure used with ordnance devices.

Subclass: 76.02 [Patents]

Materials or coatings:
This subclass is indented under subclass 76.01. Subject matter comprising the substance of which the barrel is made of compositions for treating the surface or the barrel.

Subclass: 77 [Patents]

Barrels some of which are adapted to be placed within the usual barrel to make a rifle in place of a shotgun or for some other reason to reduce the usual bore; some barrels adapted to be placed by and removed from the side of the usual barrel to make a double-barreled gun or one with a shot and also a rifle barrel.

SEE OR SEARCH CLASS:
89, Ordnance, subclass 29.
102, Ammunition and Explosives, subclasses 444+ for auxiliary barrels having a subcaliber bore and adapted to be loaded or otherwise handled like a practice cartridge.

Subclass: 78 [Patents]

Gun barrels in which the novelty resides in the rifling. This subclass includes rifling for heavy ordnance as well as for the lighter firearms.

Subclass: 79 [Patents]

Gun muzzle constructions or muzzle attachments designed to prevent the shot scattering when the charge leaves the gun.

Subclass: 83 [Patents]

Nipple structures and also guards either carried by the stock or by the hammer and adapted to prevent the hammer prematurely striking the nipple.

SEE OR SEARCH THIS CLASS, SUBCLASS:
66

Subclass: 84 [Patents]

Principally electric firing devices. Some alarms for indicating when the guns of the "hammerless" type are set at "unsafe".
(1) Note. For electrical releasing devices for mechanical projecting devices, see Class 124, Mechanical Guns and Projectors, subclass 32.

SEE OR SEARCH CLASS:
89, Ordnance, subclass 28.05 for electric firing devices for non automatic ordnance, and subclass 135 for electric firing devices for automatic guns.
362, Illumination, subclasses 110+ for electric-lighting devices combined with firearms.

Subclass: 85 [Patents]

Hands, clips, hooks, etc., combined with the gun, for sling-strap attachment, gun-stacking, and ram or wiper rod attachment.

SEE OR SEARCH CLASS:
24, Buckles, Buttons, Clasps, etc., subclass 2.5 for bands which hold the barrel of a gun to its stock and in addition perform some other function, e.g., support a hook and/or one or more loops, and subclass 265 for strap-end-attaching devices.
224, Package and Article Carriers, subclass 150, for gun slings and carriers not claiming significant gun structure.
248, Supports, subclasses 683+ for article carried supports which support the article in storage position and remain with the article when in use.

Subclass: 86 [Patents]

Gun bayonets of various kinds in combination with the firearm.

SEE OR SEARCH THIS CLASS, SUBCLASS:
52 for cane guns combined with swords.
53 for pistols combined with swords.
90 for other type cutters combined with guns.

SEE OR SEARCH CLASS:
7, Compound Tools, subclass 158 for cutters combined with other implements, and particularly subclass 116 for cutters combined with intrenching tools.
30, Cutlery, pertinent subclasses, for bayonets and other cutters, per se, and subclass 142 and indented subclasses, for combined cutlery.
482, Exercise Devices, particularly subclass 12 for exercise apparatus involving thrusting a pointed weapon, e.g., a fencing foil, etc., or a simulation thereof.

Subclass: 87 [Patents]

Devices for temporarily holding a series of cartridges or gun charges and inserting them in the gun-magazine.

SEE OR SEARCH THIS CLASS, SUBCLASS:
49

SEE OR SEARCH CLASS:
224, Package and Article Carriers, subclass 196, 199, 223, 239, 600+, 660+, and cross-reference art collect 931 for cartridge holders combined with carrying means.

Subclass: 88 [Patents]

Cartridge-holding clips or packs for temporarily holding the loads and inserting them in the gun-magazine.

SEE OR SEARCH THIS CLASS, SUBCLASS:
50

Subclass: 89 [Patents]

Devices for temporarily holding cartridges in such position as to readily insert them in the cylinder of a revolver.

Subclass: 90 [Patents]

Various implements intimately associated with the use of firearms, such as cartridge-openers, loaders for muzzle-loading guns, wire-fence-cutting attachments when combined with the gun, etc.

SEE OR SEARCH CLASS:
30, Cutlery, appropriate subclasses, for cutters not attached to or combined with a gun.

Subclass: 93 [Patents]

Digging implements combined with the gun.

SEE OR SEARCH CLASS:
7, Compound Tools, subclass 116 for shovel type tools combined with cutters (including bayonets).
294, Handling: Hand and Hoist-Line Implements, subclass 49, and indented subclasses, for intrenching implements.

Subclass: 94 [Patents]

Various forms of arm-rests and also gun-rests adapted to partially support the usual shoulder firearms.

SEE OR SEARCH CLASS:
89, Ordnance, subclass 37.01 for gun mounts which completely support a firearm or heavy gun.

Subclass: 95 [Patents]

For barrel cleaning:
This subclass is indented under subclass 90. Devices including means adapted to purge residue from the bore of the barrel of a firearm.

SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, subclass 104.16 for reciprocating type scrapper, cutter, wiper or brush.

Subclass: 96 [Patents]

Firearm protectors:
This subclass is indented under subclass 90. Devices including means which are utilized to preserve or safeguard the outer or inner parts of the firearm.

SEE OR SEARCH THIS CLASS, SUBCLASS:
70.07 for devices that fit on trigger guard to prevent access to trigger.
74 for cushioned pads that fit over the firearm stock.

SEE OR SEARCH CLASS:
206, Special Receptacle or Package, subclass 317 for a receptacle for a weapon (e.g., gun case).

Subclass: 97 [Patents]

Weights and balances:
This subclass is indented under subclass 90. Devices including means which are attached to portions of the firearm to equalize or to compensate for imbalance in the firearm weight.

Subclass: 98 [Patents]

Shell catchers:
This subclass is indented under subclass 90. Devices including means attached to the firearm to capture ejected shells.

SEE OR SEARCH CLASS:
89, Ordnance, subclass 33.4 for empty shell receivers for ordnance devices.

Subclass: 99 [Patents]

Magnetic holding devices:
This subclass is indented under subclass 90. Devices including means adapted to secure devices to the firearm magnetically.

Subclass: 100 [Patents]

Sight devices:
This subclass is indented under subclass 90. Devices including attachments for hand held firearms wherein a line of sight may be established parallel to the longitudinal axis of the firearm or at an angle thereto.

SEE OR SEARCH CLASS:
33, Geometrical Instruments, subclasses 233+ for gun sights, per se.
89, Ordnance, subclass 41.19 for gun sights on ordnance
devices.

Subclass: 101 [Patents]

Telescopic:
This subclass is indented under subclass 100. Devices comprising a tubular optical type device for providing a closer and magnified view of a target.

SEE OR SEARCH CLASS:
33, Geometrical Instruments, subclasses 245+ for telescopic sights, per se.

Subclass: 102 [Patents]

Ventilated sights:
This subclass is indented under subclass 100. Devices comprising metallic type strips attached longitudinally to the barrel of a firearm for aiding in aiming the firearm at a target.

Subclass: 103 [Patents]

Including lights:
This subclass is indented under subclass 100. Devices having means for receiving light either originating from a target or reflected from a light source on the firearm for directing the firearm at a target.
(1) Note. Laser aiming devices are included in this subclass, also included are devices for directing a light beam at target for target practicing.

SEE OR SEARCH CLASS:
362, Illumination, subclasses 110+ for illumination devices or firearms.

Subclass: 104 [Patents]

Finger recoil pad:
This subclass is indented under subclass 90. Devices including devices which cushion the shock of the reaction of trigger reversion.

Subclass: 105 [Patents]

For launching grenades:
This subclass is indented under subclass 90. Devices comprising means attached to the firearm to propel a projectile toward a target, e.g., grenade.

SEE OR SEARCH CLASS:
102, Ammunition and Explosives, subclasses 483+ for grenades, per se.

Subclass: 106 [Patents]

MISCELLANEOUS:
This subclass is indented under the class definition. Devices including firearms and accessories not classifiable in any of the subclasses.


Information Products Division -- Contacts

Questions regarding this report should be directed to:

U.S. Patent and Trademark Office
Information Products Division
PK3- Suite 441
Washington, DC 20231

tel: (703) 306-2600
FAX: (703) 306-2737
email: oeip@uspto.gov


[Top] [Manual of Classification, Class Listing] [Manual of Classification, Class 042] [Classification Definitions, Class Listing] [USPTO Home Page]

Last Modified: 6 October 2000