Class 102/249 - With setback latch

Subclass of Class 102 - Ammunition and explosives
Definition: Subject matter having means to hold the timing device inoperative
No. of patents: 36
Last issue date: 05/12/2009

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Number	Title	Issue Date
7530312	Inertial sensing microelectromechanical (MEM) safe-arm device Microelectromechanical (MEM) safe-arm devices comprise a substrate upon which a sense mass, that can contain an energetic material, is constrained to move along a pathway defined by a track disposed on the surface of the substrate. The pathway has a first end compri...	05/12/2009
7398734	MEMS resettable timer A MEMS resettable timer including a primary inertial element and at least one secondary inertial element, which includes a camming surface. When the secondary inertial element moves, its camming surface engages the camming surface of a locking element to remove it f...	07/15/2008
7383774	Microelectromechanical safing and arming apparatus A two-stage acceleration sensing apparatus is disclosed which has applications for use in a fuze assembly for a projected munition. The apparatus, which can be formed by bulk micromachining or LIGA, can sense acceleration components along two orthogonal directions t...	06/10/2008
7371982	MEMS safety and arming devices having launch and rotation interlocks and method of manufacturing the same A device, a Micro-Electrical-Mechanical-Switch (MEMS) safety and arming (S&A) device and a method of manufacturing the MEMS S&A. In one embodiment, the device includes a body and a MEMS shuttle movably coupled to the body. In this embodiment, the shuttle is configur...	05/13/2008
7258068	Safety and arming apparatus and method for a munition A safety and arming mechanism for a munition having a housing with a first detonator and an explosive mounted within the housing and in alignment with one another. A shaft is mounted within the housing. A first component is rotatingly fixed to the shaft and is movea...	08/21/2007
7207518	Cartridge with fin deployment mechanism A projectile for a weapon comprises an axially movable firing pin, an initiator actuable when impinged by the firing pin, a plurality of external peripheral fins movable from a radially inward position to a radially outward position when the projectile leaves the we...	04/24/2007
7171905	Hollow point bullets and methods of fabricating the same A hollow point bullet and methods for fabricating the same are disclosed. An example hollow point bullet includes a recess opened at a tip of the bullet that includes a first portion and a second portion. The first portion opens to the tip of the bullet and has a sq...	02/06/2007
7051656	Microelectromechanical safing and arming apparatus A two-stage acceleration sensing apparatus is disclosed which has applications for use in a fuze assembly for a projected munition. The apparatus, which can be formed by bulk micromachining or LIGA, can sense acceleration components along two orthogonal directions t...	05/30/2006
7047885	Multiple pulse cartridge ignition system An electronically controlled multi-pulse ignitor ignites a cartridge used to launch a projectile. An electronics module is programmed with a temperature performance profile for the cartridge. A temperature sensor is coupled to supply current cartridge temperature da...	05/23/2006
7004072	Magnetically sensed second environment safety and arming device The fuze is armed only if muzzle exit is sensed by a magnetic sensor within a predetermined time after setback is sensed and either one or both of a minimum spin rate is sensed by the magnetic sensor and/or a minimum number of turns are counted. ...	02/28/2006
6604467	Safety system for a projectile fuse The invention provides a safety system for a small arms projectile in which an initiating device is impacted by a firing member in order to detonate a main explosive charge. The system requires the firing member to be retained in a safe position in relati...	08/12/2003
6318270	Safety element particularly for a fuze of a substantially non-spinning projectile A projectile fuze includes a detonator carrier having a safety position and an armed position; a pin having a blocking position in which it holds the detonator carrier in the safety position and a releasing position in which the pin allows the detonator c...	11/20/2001
6240848	Device for firing a pyrotechnic propellent composition A device for firing a pyrotechnic propellent composition having a sensor mass (3) which for firing purposes releases a locking lever (4) which in the rest position bears lockingly against a ring (9) of the firing pin (1)....	06/05/2001
5886284	Missile safety system for assuring minimum safe distance An arming and safing system for a missile having an acceleration responsive mechanism for actuating a timing device upon launching to insure arming only after the passage of a predetermined period of time, and an omnidirectional impact switch for activati...	03/23/1999
5763818	Illuminant igniter pellet ignition system for use in a decoy flare A decoy flare ignition system is disclosed which includes an ignition initiator disposed at the aft end of the flare housing. An illuminant igniter is positioned in direct contact with the flare illuminant. The illuminant igniter includes at least one ill...	06/09/1998
5693906	Electro-mechanical safety and arming device An apparatus and method for safing and arming a projectile is disclosed. The apparatus utilizes an out of line rotor configuration where the detonator is mounted in the rotor. In the safe position, the detonator is out of line with an explosive lead. The ...	12/02/1997
5131328	Safety and arming system for tube launched projectile An inertia element within a projectile is displaced to a retracted position y acceleration of the projectile during launch to unblock displacement of a slider to an armed position in response to subsequent pressurization of a projectile flight motor. Safe ...	07/21/1992
4949639	Temperature-compensated, acceleration-activated igniter A propellant igniter that is controlled by temperature and is activated by cceleration. The igniter includes a booster or primer for igniting a propellant charge. A spring-loaded firing pin is cocked by a rotating sear that, when released, energizes the bo...	08/21/1990
4938139	After-firing safety device in a projectile with percussion fuze An after-firing safety device in a projectile with percussion fuze includes a spiral spring set having at least three springs wound up in series with respectively opposite directions. The spring set, maintained under tension by a cage, starts to uncoil as...	07/03/1990
4876960	Fuse for low-spin or non-spin projectiles A fuse for low-spin or non-spin projectiles comprises a detonator-carrying rotor movable to a live position. The rotor is released for movement in response to firing recoil. Movement of the rotor is effected by a spring which is relaxed prior to recoil fi...	10/31/1989
4739705	Arming and motor ignition device A combined warhead arming and drive motor ignition device for a self-propelled missile having a warhead and a drive motor comprises a first acceleration responsive means (1, 2, 3, 4) to provide an output when the missile achieves a first acceleration, a t...	04/26/1988
4683823	Safety device for a projectile fuse A projectile fuse comprises a rotor rotatable from a safety position to a live position. A slide is arranged to immobilize the rotor in its safety position. A piston is operably connected to the slide for displacing the slide to release the rotor for rota...	08/04/1987
4677914	Safety device for a spinning projectile fuze A safety device for a fuze of a spinning projectile comprises a spin acceleration safety element and a firing forward acceleration safety element. The firing forward acceleration safety element contains a ball displaceable by the action of the firing forw...	07/07/1987
4676165	Detonator for rifle grenades or the like A fuze of the type used in a rifle grenade assembly with a striker, a rotor nd a rotor lock includes one or more improvements. One pertains to the striker to prevent it from reaching a detonator-striking forward position more than once. Once it advances to...	06/30/1987
4606271	Fuse with a piercing head for a projectile The projectile fuse comprises a piezoelectric generator located forward of a piercing part (2) and formed by a striker (5), a hammer (6) and a crystal (8). The firing device comprises a watch movement (11) providing a muzzle safety and making possible the...	08/19/1986
4457232	Artillery fuze for practice and tactical munitions A fuze includes a conically shaped body having a central longitudinal chal communicating with a rearward central chamber, a firing pin assembly containing a primary and a biased secondary firing pin disposed in the channel, a delay arming assembly dispos...	07/03/1984
4419934	Safety apparatus for a spinning projectile fuse A safety apparatus for a spinning projectile fuze comprises a rotor with which there is operatively associated a toothed segment which, under the action of the spin, drives a retarding or restraining mechanism and following expiration of the action of the...	12/13/1983
4389937	Fuze for non-spinning projectiles The fuze comprises a primer-carrying rotor and an inertia mass tensioning a spring under the effect of the acceleration at the start of the explosion. The inertia mass entrains the rotor at the outlet of the firing muzzle in the armed position, under the ...	06/28/1983
4337701	Electromechanical warhead safety-arming device A safety and arming device using two counter-rotating gears provides stabty from acceleration forces. The gears have a natural tendency to compensate for lateral shifts which tend to speed up or slow down any one single gear. The gears are anchored by a ...	07/06/1982
4320706	Percussion head fuse for an explosive projectile It comprises a cylindrical body 1 which is intended to be fixed on an explosive projectile. A detonator 12 comprising a casing 13 whose rearward portion serves as armor plating 13' is mounted slidably in a casing 11 which is fixed coaxially in the cylindr...	03/23/1982
4217828	Safety device for fuses Safety device for fuses, of the type which comprises a mobile element, which can be moved from a position of safety in which aforesaid mobile element may either be part of the pyrotechnical chain, of an electric or of an electronic circuit, or contain any...	08/19/1980
4212245	Bottom fuse The invention relates to a bottom fuse for an explosive projectile for example a rifle grenade comprising a hollow revolution body the rear end of which is provided either with a primer or with a percussion point and inside of which a detonator is slidabl...	07/15/1980
4128061	Safety system for a projectile fuse A fuse includes a detonator-carrying rotor which can be turned from an armed position to a safety position. A first safety mechanism is provided for preventing return of the rotor to the armed position until the projectile has been fired. An additional sa...	12/05/1978
4119040	Variable time fuze A pyrotechnic delay fuze, for use in extended time explosive ordnances, crising a pyrotechnic delay cord in a spiral race in the base of the fuze. This system is activated through associated ignition materials. Upon initiation and propagation of the dela...	10/10/1978
4004520	Time fuse A time fuse for a non-spinning projectile has a pivoted catch connecting a fuse setting member to a setting disc whereby rotation of the member rotates the disc to wind a clockwork spring. A plunger is locked in a housing in the setting member by a movabl...	01/25/1977
3978798	Fuze mechanism having integrated safety functions A fuze mechanism for projectiles and the like is provided with a number of integrated safety catches which must be successively released before the fuze may be detonated. A firing pin lock cannot be released until the fuzing time has first been set. Relea...	09/07/1976

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Class 102/249 - With setback latch