Class 42/1.05 - Chamber status

Subclass of Class 42 - Firearms
Definition: Devices having means to designate the presence or absence
No. of patents: 39
Last issue date: 10/04/2011

Number	Title	Issue Date
8028454	Loaded chamber indicator systems for semiautomatic handguns Loaded chamber indicator systems semi-automatic handguns wherein a loaded chamber indicator is extended by the empty cartridge ejector when the empty cartridge ejector rests on a cartridge in the handgun chamber. In one embodiment, the loaded chamber indicator is in...	10/04/2011
7908779	Handgun safety A handgun has at least one barrel; a cartridge chamber; a gun lock correlated with the cartridge chamber and provided with a hammer to be cocked against a spring force into a cocked position and with a trigger for releasing the hammer from the cocked position. First...	03/22/2011
7774970	Method for indicating loaded firearm chamber A pistol including a loaded chamber indicator to identify the presence of a cartridge loaded in the firing chamber. The pistol may generally include a barrel, a receiver attached to the barrel thereby defining a barrel-receiver assembly, and a chamber associated wit...	08/17/2010
7610709	Antidismantling device for hand-guns An antidismantling device for preventing dismantling of a hand-gun when a cartridge is present in the barrel (102) of the hand-gun, the barrel (102) being mounted in a breech block (110), and a guide pin (123), which is biased at least in...	11/03/2009
7383655	Pistol with loaded chamber indicator A pistol including a loaded chamber indicator to identify the presence of a cartridge loaded in the firing chamber. The pistol may generally include a barrel, a receiver attached to the barrel thereby defining a barrel-receiver assembly, and a chamber associated wit...	06/10/2008
7340987	Conversion platform for a .45 ACP pistol A method of modifying a .45 ACP pistol having a slide and a receiver defining a magazine well includes the steps of reducing the size of the magazine well and shortening the slide. The slide includes a breech face and a proximal end and the magazine well includes a ...	03/11/2008
7305786	Pistol with loaded chamber indicator A centerfire autoloading pistol including a loaded chamber indicator to identify the presence of a cartridge loaded in the firing chamber. The pistol may generally include a housing having an external surface and defining a chamber to receive a cartridge, a barrel u...	12/11/2007
7237468	Projectile firing device The invention relates to a projectile firing device used on a platform and comprising at least two tubes integral with a base. This device is characterized in that the base is mounted able to swivel on a turret around a first, substantially horizontal axis, s...	07/03/2007
7234260	Counting device Device (12) for counting shots fired by an automatic firearm (11), having a cartridge chamber containing a cartridge that can be expelled through an expulsion window and a first emission means that emits a continuous electromagnetic signal in such a ma...	06/26/2007
7213589	Compressed-gas gun A compressed gas injection device includes a projectile course for receiving and accelerating projectile bodies, a compressed gas housing which is connected to the projectile course and which is divided up into a compressed gas chamber and a working chamber by a par...	05/08/2007
7207252	Determining cook-off time of weapon Determining cook-off time for a weapon is disclosed. A method determines a first barrel temperature next to a first energetic, such as a propellant charge, of ammunition within a gun barrel, and determines a second barrel temperature next to a second energetic, such...	04/24/2007
7131366	Actuator assembly A trigger actuator having a substantially unitary structure with a measuring device mounted thereon to detect the application of force to the trigger. In response, the measuring device generates a trigger signal. A compensating system detects additional or undesirab...	11/07/2006
7066072	Determining cook-off time of weapon Determining cook-off time for a weapon is disclosed. A method determines a first barrel temperature next to a first energetic, such as a propellant charge, of ammunition within a gun barrel, and determines a second barrel temperature next to a second energetic, such...	06/27/2006
6857213	Loading indicators for firearms A loading indicator for use in a firearm having a barrel including a rear section and a cartridge chamber is disclosed. In one example, the loading indicator includes an elastic shaft disposed within a compartment in the rear section of the barrel and a feeler porti...	02/22/2005
6802147	Device for firearms and firearm A device for firearms (1) and a firearm (1) having this device are disclosed. The device is used for detecting a state in the space (10) and for transmitting a signal correlated to the state. The device has a sensor region (24.1, 24.2) fo...	10/12/2004
6785994	Spring-loaded firearm safety indicator The invention is a firearm safety indicator that is spring-loaded, thus enabling self-ejection when a firearm's bolt is actuated. To attain this, the indicator comprises a main body and cantilever spring body joined together. A peg extends perpendicularly from the m...	09/07/2004
6622411	Firearm having chamber status indicator and firearm retrofitting method A semi-automatic breech locking pistol has a reciprocally movable slide which includes an integral bolt and defines an upwardly and laterally outwardly open ejection port forward of the bolt. A barrel at least partially disposed within the slide has a cha...	09/23/2003
6493977	Firearm having chamber status indicator and firearm retrofitting method A semi-automatic breech locking pistol has a reciprocally movable slide which includes an integral bolt and defines an upwardly and laterally outwardly open ejection port forward of the bolt. A barrel at least partially disposed within the slide has a cha...	12/17/2002
6256915	In-chamber cartridge indicator for pistols In-chamber cartridge indicator for pistols comprises an indicator (1) lodged in a respective groove (3) of extractor (1) and pivoted by pin (4) so that, when the respective ribs (12, 11) touch the cartridge breech (16) within the chamber, the synchronized...	07/10/2001
6161322	Firearm having chamber status indicator and firearm retrofitting method Semi-automatic breech locking pistol having a reciprocally movable slice defining an upwardly and laterally outwardly open ejection port and a barrel including a rear part having a rearwardly extending headspace extension hood and exposed within and provi...	12/19/2000
5926987	Cartridge indicator for firearms The cartridge indicator is a rod slidably mounted in a cavity in the breech slide of a firearm to allow checking for the presence of a cartridge in the chamber. The rod has a check end which protrudes out of the breech slide as biased by a spring at the c...	07/27/1999
5799433	Round sensing mechanism A mechanism for determining the presence of a round of ammunition within a firearm by measuring the resistance across the round upon passing a test current through electrodes positioned to contact ammunition, and optionally means for determining the viabi...	09/01/1998
5487232	Detonator assembly An improved detonator assembly for a black powder firearm having a breech block, a receiver, and a nipple. The detonator assembly comprises a primer and a primer carrier. The primer carrier has an axial bore dimensioned to receive the primer at one end an...	01/30/1996
5425299	Laser module and silencer apparatus A silencer apparatus that can be attached to a standard autoloading handgun having a laser sight module mounted to the front face of the slide of the handgun. The silencer module features additional electronics so that the firing status of the firearm can...	06/20/1995
5410831	Extractors for automatic pistols An extractor as fitted to an automatic pistol comprising: a frame; a slide with a breech block at the rear which slides on the frame over a barrel to form a cartridge receiving chamber; an extractor having a claw provided with an apex so that when a cartr...	05/02/1995
5410832	Weapon chamber safety plug kit A plug member configured in a complementary relationship relative to a weapon firearm chamber is provided. The plug includes a rear wall having a flexible flag strip extending therefrom to project from the firearm when the firearm is arranged to cover the...	05/02/1995
5097613	Safety plug for the firing chamber of a weapon A safety plug for the firing chamber of a weapon to provide a visual indication that the weapon firing chamber is free of live ammunition. The safety plug includes a cylindrical body having a diameter which is less than the weapon chamber bore. This body ...	03/24/1992
5052139	Gun-loaded indicator device for shotguns A gun-loaded indicator device for shotguns of the type in which a cartridge chamber is defined at the breech end of a barrel removably mounted in a stock (3), comprises a feeler ball (9) movable within a through hole (10) provided in the breech end and op...	10/01/1991
4965952	Safety plug for the firing chamber of a weapon A safety plug for the firing chamber of a weapon to provide a visual indication that the weapon firing chamber is free of live ammunition. The safety plug includes a cylindrical body having a diameter which is less than the weapon chamber bore. This body ...	10/30/1990
4793085	Electronic firing system for target pistol An electronically operated pistol (10) has a frame (32) upon which is mounted a barrel (36) and a shell (12) which encloses virtually all moving parts. The pistol has a trigger (14) which, when pulled, moves a front section (56) of a trigger bar (48) carr...	12/27/1988
4709496	Safety device including chamber probe A safety device for use with a repeating firearm having a magazine well for holding a box-like removable magazine, to prevent the firearm from being fired unintentionally and for providing an indication visible at some distance that the firearm is in a sa...	12/01/1987
4697366	Chamber indicator for a revolver or a hand-held gun There is disclosed a chamber indicator apparatus for a conventional revolver. The chamber indicator apparatus employs an aperture in the recoil plate which aperture abuts against the back end of the cylinder and allows one to view a given area of the cyli...	10/06/1987
4682528	Active protection system An active protection system (10) is disclosed as having a launch tube (12) with a round inner bore (44) that tapers from an open muzzle end (42) thereof toward a closed rear end (40) to facilitate loading of a cartridge (26) and to permit ejection thereof...	07/28/1987
4494329	Arrangement for determining the presence of a cartridge in a cartridge chamber of a weapon A cartridge casing detection system for detecting the presence or absence of a cartridge casing in the cartridge chamber of a machine cannon. A lever is pivotally mounted in a recess of the housing of the weapon. A sensor is connected to a switch. One fre...	01/22/1985
4483088	Revolver empty chamber indicia A safety indicator is disclosed for use with a revolving chamber cylinder of a revolver. The indicator comprises a static marker which is positioned or manufactured on an external surface area of the revolving cylinder. The external area corresponds to th...	11/20/1984
4416630	Weapons effect signature simulator A realistic audio-visual effects generator for simulating anti-tank and a-aircraft missile launching. A pyrotechnic cartridge having disc at one end that ruptures and allows the efflux of the products of combustion to exit through a hole in the breech bl...	11/22/1983
4103639	Gun chamber indicator Mechanical means for determining the presence of a cartridge in the chamber of a locked firearm in which a biased plunger means cooperates with the movement of the firearm eject or to indicate absence or presence of a cartridge therein....	08/01/1978
4100691	Safety cartridge indicator for guns A slidable pin, in a gun breech bolt, impinges on a chambered cartridge sliding rearwardly, striking the arm of a pivoted angle indicator raising an indicator surface above the bolt in view of the user. A spring detent normally holds the pin forwardly so ...	07/18/1978
4089250	Cartridge holder with extractor/indicator An improved explosive cartridge holder having an indicator to show the presence of a cartridge and a spring and new design to assist in removal of the discharged cartridge....	05/16/1978

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Class 42/1.05 - Chamber status