Class 89/27.13 - Primer fired

Subclass of Class 89 - Ordnance
Definition: Subject matter using a cap or cylinder containing a substance
No. of patents: 31
Last issue date: 12/07/2010

Number	Title	Issue Date
7845264	Automatic primer feed mechanism A primer feed mechanism mounted on a carrier of an artillery piece includes a body assembly for mounting the primer feed mechanism on the carrier, the body assembly having guide rails and a follower plate; a tray assembly that is movable on the guide rails of the bo...	12/07/2010
7357058	Safety latch assembly for use in a weapon breech A safety latch assembly locks a firing tray mechanism and prevents it from firing a primer prematurely if a breech is not safely closed. The safety latch assembly includes a latch body, a latch hook for locking a firing mechanism tray, and a shaft that connects the ...	04/15/2008
7318369	Out-of-battery lock for automatic primer feed mechanism An out-of-battery lock for a primer feed mechanism having a drive shaft and a drive shaft housing surrounding the drive shaft, the out-of-battery lock including a housing having an opening therethrough for attachment to the drive shaft; a pair of wings disposed on o...	01/15/2008
7246549	Automatic primer feed mechanism A primer feed mechanism mounted on a carrier of an artillery piece includes a body assembly for mounting the primer feed mechanism on the carrier, the body assembly having guide rails and a follower plate; a tray assembly that is movable on the guide rails of the bo...	07/24/2007
7228779	Automatic primer feed mechanism An automatic primer feed mechanism for use with a carrier assembly of a large caliber artillery piece, which includes mechanical assemblies for automatic primer loading after full breech closure and allows for spent primer cartridges to be extracted before opening o...	06/12/2007
7073283	Breech plug for muzzleloading firearms A breech plug having a body with first and second ends and a compression chamber extending therethrough, a primer holder mounted to the first end of the body having a central aperture aligned with the compression chamber with slots extending radially from the centra...	07/11/2006
6996930	Retractable face safety for a firearm An improved muzzleloading firearm having a novel safety system. The safety system utilizes a spool coupled to a compression spring to maintain an ignition system such as a primer out of potential contact with a firing pin, even in the event of unintentional actuatio...	02/14/2006
6976431	Cartridge for a firearm A cartridge for firearms includes a bullet connected to a casing. The casing includes a cylindrical wall that extends to an end member opposite the bullet, a hollow interior formed by the wall and the end member, means for receiving a priming composition, and means ...	12/20/2005
6955111	Method for safely removing the spindle and the breechblock from the carrier of an M777 howitzer A method comprising the steps of lifting a stool-like device onto the recoil slide rails of a howitzer, sliding the device on the recoil slide rails of the howitzer until the device is centered under the breechblock of the howitzer, receiving and holding the breechb...	10/18/2005
6931774	Smokeless cylinder for muzzle-loading revolver A replacement cylinder that enables the use of modern smokeless gunpowder in a black powder muzzle-loading revolver is provided. The cylinder includes a main cylinder body and a removable cylinder cap. The main cylinder body includes a number of chambers, each of wh...	08/23/2005
6877415	Individual premeasured charges with reduced moisture content and method of producing same A transport container with a removable cover which is repeatedly removable and refastenable to the transport container. The transport container is sized to accommodate a plurality of individual premeasured charges of gunpowder. Each of the plurality of individual pr...	04/12/2005
6865838	Multiple auto primer system for muzzle-loading firearm A method and apparatus for loading and ejecting ignition devices into a muzzle-loading firearm. A magazine contains a plurality of ignition devices, which are sequentially loaded from the magazine onto the breech plug of the firearm by a sliding bolt or other loadin...	03/15/2005
6557449	Firearms This invention provides a handgun assembly such as a rifle (9) which has a barrel assembly (24) including a cluster of barrels each supporting a longitudinal arrangement of aerodynamically shaped, directional projectiles (15) and interposed propellant cha...	05/06/2003
6363829	Drum seal for primer feed mechanism A system for sealing an indexing primer magazine and breech assembly of a barrel-type firearm to contain exhaust gases with the flow passage transfers the increased pressure into a sealing force between the insert and indexing primer magazine. Additionall...	04/02/2002
6314670	Muzzle loader with smokeless powder capability A muzzle loader firearm having a primer cavity that is sized to have an interference fit with a desired primer, to be received therein, so that an outwardly facing surface of the exterior casing of the primer, upon being discharged, expands and forms a fl...	11/13/2001
5651203	Breech plug and ignition system for muzzle-loading firearm A breech plug and igniter system for a muzzle-loading rifle includes a generally cylindrical breech plug with a cylindrical chamber formed in the rearward end coaxial with the plug, and an ignition bore extending forwardly through the plug from the forwar...	07/29/1997
5610361	Primer detonation device and method A primer detonation device includes a slide block and a rod. The slide block is configured to slide along an axis within a housing. The housing has a rear end and a front end. The rod is configured to slide within the housing relative to the slide block. ...	03/11/1997
5544563	Primer cartridge leader for guns A first member, such as a primer cartridge (33), is inserted in an aperture in a second member, such as a chamber (8) in a gun breech block (4,5), by means of an apparatus such as a primer loader (52), comprising a tubular member whose bore (16) serves as...	08/13/1996
5535660	Breech closure for a barrel-type firearm A breech closure for a barrel-type firearm is described, in which a flow passage for an igniting jet from an igniting cartridge held in a magazine extends through a breechblock. The breechblock is formed on that side which faces the magazine with a cylind...	07/16/1996
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
5408776	Muzzle loading firearm ignition system An improved ignition means for a muzzle loading weapon which is adapted to fire a projectile, and comprises a barrel, an ignition means adapted to receive a primer charge comprising a cylindrical casing having an explosive charge within, and an annular fl...	04/25/1995
5331880	Wedge-type breechblock for a gun A wedge-type breechblock is disposed at the breech end of a gun. A cartridge chamber having a length L1 in the wedge-type breechblock accommodates propellant igniters, with obturation being effected by the respective propellant igniters. A firing mechanis...	07/26/1994
5115716	Automatic percussion primer feed mechanism A primer feed mechanism for automatically feeding unfired primers to, and extracting fired primers from, an artillery piece. A magazine having a rotatable cylindrical drum carrying a plurality of primer cartridges is detachably mounted adjacent the breach...	05/26/1992
5058304	Dual-catch trigger mechanism A trigger mechanism includes a firing pin having a cocked position and a firing position into which the firing pin is adapted to be accelerated; a catch having a locking position for engaging the firing pin in the cocked position to hold the firing pin; a...	10/22/1991
5054365	Propellant igniter magazine for a wedge-type breechblock A gun includes a gun barrel having a breech end; a wedge-type breechblock disposed at the breech end; a flash bore in the breechblock; a seal disposed adjacent to and surrounding an inlet opening of the flash bore; a firing mechanism mounted on the breech...	10/08/1991
4991490	Breech wedge for artillery cannon The invention relates to a breech wedge for artillery cannon, of a type that includes means for supporting a primer-cartridge magazine that is driven in translation and rotation under the control of an assembly consisting of a rack and pinion. This first ...	02/12/1991
4593602	Rocket weapon system and method therefor An improved rifle-actuated rocket weapon system and an improved method for iming the system in relation to a short range target by firing one or more tracer bullets until it is aimed at the target for launching the rocket weapon. The system is generally ma...	06/10/1986
4586420	System for firing a propellent charge by pyrotechnical transmission The invention relates to a system for firing a propellent charge by pyrotechnic transmission, comprising mechanical means of actuating a hammer, a primer cooperating with said hammer, and a propellent charge connected to the primer by pyrotechnical means ...	05/06/1986
4558626	Primer cartridge magazine for a wedge-type breech block A primer cartridge magazine is removably mounted in the reciprocally movable slider of a wedge-type breech mechanism of a gun. The magazine has a longitudinal spring mounted therein which biases a stack of primer cartridges via a guide member towards the ...	12/17/1985
4195550	Propellent charge igniter for caseless cartridges of separately loaded ammunition A propellent charge igniter for caseless cartridges of separately loaded ammunition. The igniter has an ignition chain which includes a secondary charge adjoining a main charge made up of powder pipes or tubes. The secondary charge is disposed in pierceab...	04/01/1980
3951041	Breech mechanism with separate clearance for misfired primer cartridge A breech mechanism for a cannon has a slidable breech block on which is carried a slider that in turn carries a primer-cartridge magazine alignable with a chamber on the block. The slider is automatically driven in the opposite direction as the block when...	04/20/1976

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Class 89/27.13 - Primer fired