Class 102/247 - Inertia operated

Subclass of Class 102 - Ammunition and explosives
Definition: Subject matter in which the blocking or interrupting means
No. of patents: 36
Last issue date: 10/26/2010

Number	Title	Issue Date
7819062	Safety and arming device for high-G munitions A representative embodiment of the invention provides a MEMS-based safety and arming (S&A) device having a shuttle movably connected to a frame by one or more bowed springs. The device has an electrical path adapted to electrically connect the frame and a contact pa...	10/26/2010
7587979	Multi-stage mechanical delay mechanisms for inertial igniters for thermal batteries and the like An inertia igniter including a mechanical delay mechanism having two or more members which are movable under different acceleration conditions to sequentially move a movable member upon sequential movement of the two or more members and an ignition member actuatable...	09/15/2009
7437995	Axially compact mechanical igniter for thermal batteries and the like An inertial igniter including: a first member having a wall and internal cavity; a second member slidable in the internal cavity, a striker disposed thereon and a first concave portion; a third member slidable on an exterior surface of the wall, a second concave por...	10/21/2008
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
7320286	Setback switch for safe and arm A switch mechanism is provided that has a tubular enclosure; a contact pin electrically insulated from the tubular enclosure; a g-weight positioned inside the tubular enclosure and movable from an open position to a closed position; and a transparent closure that en...	01/22/2008
7316186	Air-powered electro-mechanical fuze for submunition grenades A fuze for a submunition comprises a fuze housing with a stabilizer ribbon for aerodynamic orientation, a fuze slider released by tension on the stabilizer ribbon, an air-powered electric generator extended into the airstream by the fuze slider and powered in flight...	01/08/2008
7100483	Firing subsystem for use in a fast-acting safety system Cutting machines with high-speed safety systems, and firing subsystems used in high-speed safety systems, are disclosed. The cutting machines may include a detection system adapted to detect a dangerous condition between a cutting tool and a person. A reaction syste...	09/05/2006
6964231	Miniature MEMS-based electro-mechanical safety and arming device A MEMS type safety and arming device includes a substrate; a frame disposed on the substrate; a setback slider disposed in the frame, the setback slider moving linearly in response to a setback acceleration; an arming slider disposed in the frame, the arming slider ...	11/15/2005
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
6598533	Electronic time-fuse for a projectile The invention aims to increase the overflight safety of a projectile, comprising a time-fuse which has an acceleration-activated battery. To this end, the safety device actuates a switch, whose position is interrogated during the flight phase and the fuse...	07/29/2003
6568329	Microelectromechanical system (MEMS) safe and arm apparatus A MEMS type safe and arm apparatus for a fuze includes a setback slider responsive to a first setback acceleration, the setback slider moving linearly in response to the first setback acceleration; a setforward slider responsive to a first setforward acce...	05/27/2003
6463856	Electronically and mechanically-operated ignition delay for cartridge-type pyrotechnic decoy flare ammunition The invention relates to an electronically and mechanically-operated ignition delay which is used in cartridge-type pyrotechnic decoy flare ammunition. Said ignition delay comprises a cylindrical sleeve (10), containing an ignition device (1) in the base,...	10/15/2002
6439119	Lockable electro-optical high voltage apparatus and method for slapper detonators A safe/arm apparatus includes a slider barrier having at least one notch formed therein, the slider barrier including an optically diffuse surface and an optically reflective surface; at least one mechanical lock removably disposed in the at least one notch; ...	08/27/2002
6196130	Electrostatic arming apparatus for an explosive projectile The inventive environment sensor apparatus includes an electrostatic sensor carried by the projectile. The electrostatic sensor has first and second electrical conducting areas separated by a dielectric material to form two plates of a capacitor. The firs...	03/06/2001
6129022	Ammunition safety and arming unit A safety and arming unit for a round of ammunition, comprising one or more acceleration sensors for detecting when the acceleration of the ammunition reaches at least two different predetermined linear acceleration values; timer means for measuring the ti...	10/10/2000
5872324	Trimode fuze A trimode fuze is provided which comprises a combination of a standard dual ode fuze with the addition of a void sensing mechanism. The modified fuze provides detonation of a warhead under three distinct scenarios: impact upon a hard target with detonation...	02/16/1999
5705767	Miniature, planar, inertially-damped, inertially-actuated delay slider actuator A miniature, planar, inertially-damped, inertially-actuated delay slider uator is micromachined on a substrate and consists of a "slider", with zig-zag or stair-step-like patterns on the side edges, interacting with similar vertical-edged zig-zag pattern...	01/06/1998
5454322	Shock detecting device A shock detecting device includes a housing, a weight disposed in the housing and moved by a shock which is more than a predetermined value from outside, an output member rotatably disposed in the housing and rotated in response to the movement of the wei...	10/03/1995
5275107	Gun launched non-spinning safety and arming mechanism An safe and arm apparatus is disclosed wherein the apparatus utilizes setback acceleration for in-bore safety and sustained in-bore acceleration to position various members to allow for subsequent alignment of the firing train at arm time. The apparatus i...	01/04/1994
5271327	Elecro-mechanical base element fuze An electro-mechanical base element fuze is disclosed wherein mechanical innovations along with the latest in electronic sensing, signal processing and miniaturization provide safety and simplicity as well as improving performance, reliability and reducing...	12/21/1993
5244229	Mechanical crash sensor A mechanical sensor for a passenger restraint system includes several primers for activating a gas generating component, and a trigger for setting the primers off in response to a velocity change. The sensor also includes an inertial mass for sensing the ...	09/14/1993
5189250	Projectile for smooth bore weapon The invention provides a projectile adapted to be fired from a smooth bore weapon, such as a shotgun, by means of a cartridge containing a propellant charge. The projectile comprises a generally cylindrical casing and a warhead assembly, the warhead being...	02/23/1993
4991510	Impact fuse having fore-bore safety The invention relates to an impact fuse (2) having fore-bore safety for a projectile (1), comprising a percussion needle (3) stationary on the fuse and an impact body (4) containing a percussion cap (5) and supported slidingly in the direction of flight, ...	02/12/1991
4986184	Self-sterilizing fire-on-the-fly bi-stable safe and arm device A safe and arm device for aligning elements of an energy transfer mechanism of an ammunition fuze includes an inertial mass, an energy transfer mechanism interrupt barrier component and an energy-loadable spring, all movably mounted in a bore of a housing...	01/22/1991
4927172	Mechanical acceleration sensor A mechanical acceleration sensor includes a housing and a weight which is rotatably supported by the housing. An actuating member for triggering an output device is mounted on an actuating arm which is rotatable in the same direction as the weight and abu...	05/22/1990
4915028	Dud de-arming device or insert for a projectile fuze The dud de-arming device serves to de-arm a fuze of a projectile which has remained lying on the ground or the place where it landed as a dud in order to prevent the discovered dud from still exploding when touched or moved. As to spinning projectiles the...	04/10/1990
4896607	Boosted kinetic energy penetrator fuze A fuze for missile having a linear axis passing rearwardly through a forward penetrator, an explosive charge with the penetrator, a fuze rearward the explosive charge, a propulsion rocket rearward of the fuze, and a canister rearward of the rocket and con...	01/30/1990
4815381	Multiple pulse inertial arm/disarm switch The device, in a first embodiment, has utility for operation on a dual pulse missile including a booster segment for launching and includes several main components, as follows: an inertial mass, a shaft with a zig zag channel, a gearless electric motor, a...	03/28/1989
4726294	Projectile impact fuze containing de-arming device It happens time and again that a fuze does not function and that the projectile remains in the field or the place where it landed as a dud. When such a dud is found the danger exists that it might explode upon the finder's touch or when moved or lifted. T...	02/23/1988
4694751	Explosive system for guided missiles and rocket projectiles An explosive system for use in projectiles such as guided missiles and rocket projectiles, includes an explosive charge and an ignition booster for igniting the explosive charge. A detonator is provided for igniting the booster. An ignition transfer devic...	09/22/1987
4515081	Arrangement in a fuse for projectiles with explosive charge for changing over between direct and delayed ignition of the explosive charge Arrangement in a fuse for projectiles with explosive charge for changing over between direct and delayed ignition of the explosive charge. The arrangement includes a movable contact member which in an initial position short-circuits an electrical igniter ...	05/07/1985
4316414	Fuze A fuze apparatus arms itself in flight and is especially adapted for use in training shells. The fuze has a casing with ignitable or explosive material located therein and an igniter mounted to ignite the ignitable material upon a sufficient impact agains...	02/23/1982
4202271	Safe and arm device A safe and arming device used with electrically operated fuses of a missile nd including a housing with an acceleration responsive device rotatably mounted therein between safe and arming positions and biased into the safe position by a spring and actuatab...	05/13/1980
4036145	Percussion fuse assembly An improved construction for a percussion fuse interposed between a charge-carrying shell body and a shell head disposed forwardly of the shell body is described. An impact body, which carries the percussion cap of the fuse and which is normally maintaine...	07/19/1977
4026211	Hollow-charge shell and antitank weapon for said shell Hollow-charge shell and antitank weapon for said shell, the shell being provided with an adjustable safety device that is automatically adjusted from a safety position to an armed position at the discharge of the shell, bringing a blasting cap contained i...	05/31/1977
3937146	Dual signature safety and arming mechanism A dual signature arming mechanism responsive to acceleration to cock a fig pin and responsive to propellant combustion gas pressure to pyrotechnically release a pivotally mounted detonator which rotates into position relative to said firing pin. A plunge...	02/10/1976

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Class 102/247 - Inertia operated