101 |
Miniature safe and arm mechanisms for fuzing of gravity dropped small weapons |
US13297234 |
2011-11-15 |
US08646386B2 |
2014-02-11 |
Jahangir S. Rastegar |
Methods and devices for differentiating an actual air drop of a gravity dropped weapon from an accidental drop of the weapon onto a surface. The method including: connecting a first end of at least one lanyard to an airframe; releasably connecting a second end of the at least one lanyard to a power generation device such that release of the second end with the power generation device initiates power generation by the power generation device; and releasably connecting a third end of the at least one lanyard to at least a portion of an air velocity sensor such that release of the third end one of activates or exposes the air velocity sensor to an air stream; and differentiating the actual air drop from the accidental drop based at least on a detection of an air velocity by the air velocity sensor. |
102 |
Linear escapements, methods for making, and use |
US12731098 |
2010-03-24 |
US08413582B1 |
2013-04-09 |
Richard T. Chen |
The present invention relates generally to the field of escapement mechanisms for providing mechanical control of motion based on desired timing criteria and more particularly to micro-scale and millimeter scale escapement mechanisms, and even more particularly to such mechanisms produced in whole or in part using multi-layer, multi-material electrochemical fabrication methods. In some embodiments, such escapement mechanisms are used in safing and arming applications for munitions or other explosive devices where two or more accelerations are present at appropriate times where after an arming delay occurs. |
103 |
MINIATURE SAFE AND ARM (S&A) MECHANISMS FOR FUZING OF GRAVITY DROPPED SMALL WEAPONS |
US12983301 |
2011-01-01 |
US20130081550A1 |
2013-04-04 |
Jahangir S. Rastegar; Richard T. Murray |
A device for enabling safe/arm functionality in a gravity dropped weapon detachably connected to an airframe where the device includes: an elastic element disposed in a shell of the weapon; a releasable connection between the weapon and the airframe to release one or more of a stored and generated energy in the elastic element; and a piezoelectric member connected to one end of the elastic member for converting the one or more of the stored and generated energy to an electrical energy. The releasable connection can include: a link having a movable connection for movement of the link relative to the shell between a first position constraining the elastic element from movement and a second position releasing the elastic member to generate the electrical energy; and a lanyard for tethering the link to the airframe such that the link is moved to the second position upon the weapon being released from the airframe. |
104 |
Pyrotechnic signaling means |
US12237860 |
2008-09-25 |
US08250982B2 |
2012-08-28 |
Thorsten Kothe; Ernst Dix |
Pyrotechnic signaling means (10) are ignited manually by pulling on a pulling member (24). In known pyrotechnic signaling means (10), the pulling member (24) has a short cable which is knotted to an operating means (26). A knot such as this can be produced only manually, thus making the production of pyrotechnic signaling means (10) quite complex. In addition, an ignition device (14) for known pyrotechnic signaling means (10) has a hole through it for a firing bolt (36) which is connected to the pulling member (24). This allows moisture to enter the pyrotechnic signaling means (10) through the ignition device (14). The pyrotechnic signaling means (10) according to the invention provides for the pulling member (24) to be formed from flexible strip-like sections (48, 50), which are connected by film hinges (54) and can be collapsed, saving space, when not in use. The sections (48, 50) can be integrally connected to an operating means (46), such that the entire pulling member (24) can be formed integrally from plastic and manual fitting of the individual components of the pulling member (24) is superfluous. The invention also provides for the ignition device (14) to be sealed by a coupling device (42) of the pulling member (24) until the pyrotechnic signaling means (10) are activated. This means that no moisture can pass through the ignition device (14) before the pyrotechnic signaling means (10) are activated. |
105 |
INERTIAL IGNITERS WITH SAFETY PIN FOR INITIATION WITH LOW SETBACK ACCELERATION |
US12794763 |
2010-06-06 |
US20110297029A1 |
2011-12-08 |
Jahangir S. Rastegar; Richard T. Murray |
Inertial igniters for initiating a thermal battery and methods of preventing initiation of an inertial igniter are provided. The method including: biasing a mass element from a base element with a spring element connecting the mass element and the spring element; and removably disposing a safety member between the mass element and the base element to prevent relative movement between the mass element and base element to prevent accidental initiation of the inertial igniter. The method can further comprise removing the safety member prior to subjecting the inertial igniter to all-fire conditions. |
106 |
Safe and arm device and explosive device incorporating same |
US11066924 |
2005-02-28 |
US08042471B2 |
2011-10-25 |
Matthew A. Michel; Joseph R. Mayersak; Lance Benedict |
A safe and arm (S&A) device is disclosed. The device utilizes a no-fire separation distance and a mechanical configuration of primary explosive/booster explosive and secondary explosive to establish a safe mode. While in safe mode, the device would allow no more than 1 in 1 million detonation transfers to occur from primary to secondary. In armed mode, the no-fire separation distance is taken away, allowing reliable detonation transfer. Two arming environments, which occur after launch and safe separation, are used to move the S&A device to armed mode. The first environment is the release event of the projectiles from their packed state in a dispenser. The second environment is a target sense mechanism. If either arming environment returns to its original state, the mechanism returns to safe mode. The S&A device will not allow inadvertent packing into the dispenser of explosive devices in the armed state. |
107 |
SMALL SMART WEAPON AND WEAPON SYSTEM EMPLOYING THE SAME |
US12850421 |
2010-08-04 |
US20110017864A1 |
2011-01-27 |
Steven D. Roemerman |
A weapon and weapon system, and methods of manufacturing and operating the same. In one embodiment, the weapon includes a warhead including destructive elements and a guidance section with a seeker configured to guide the weapon to a target. The seeker includes a detector configured to receive a distorted signal impinging on an objective lens from the target, memory configured to store target criteria and a correction map, and a processor configured to provide a correction signal based on the distorted signal, the target criteria and the correction map to guide the weapon to the target. |
108 |
Igniter safe and arm, igniter assembly and flare so equipped and method of providing a safety for an igniter assembly |
US11559867 |
2006-11-14 |
US07726243B2 |
2010-06-01 |
Kevin W. Richards; Kendall Dye; Robert G. Jones |
A parachute flare igniter assembly includes a novel safety for arresting the motion of a slider when subjected to external forces, but allows slider motion when subjected to intended cable actuation forces. The igniter safety includes a housing, a slider, a cable and a sleeve. The slider, connected to the cable, is slidably received within the housing. The cable moves the slider by applying a cable force conventionally obtained by actuation of a parachute associated with the flare and connected to an end of the cable opposite an end connected to the slider. The sleeve is connected to the cable and is disposed between the housing and the slider, so that the sleeve will arrest the slider with respect to the housing when the cable force is not present. A flare and a method of providing a safety in an igniter assembly is also provided. |
109 |
PYROTECHNIC SIGNALING MEANS |
US12237860 |
2008-09-25 |
US20090090264A1 |
2009-04-09 |
Thorsten Kothe; Ernst Dix |
Pyrotechnic signaling means (10) are ignited manually by pulling on a pulling member (24). In known pyrotechnic signaling means (10), the pulling member (24) has a short cable which is knotted to an operating means (26). A knot such as this can be produced only manually, thus making the production of pyrotechnic signaling means (10) quite complex. In addition, an ignition device (14) for known pyrotechnic signaling means (10) has a hole through it for a firing bolt (36) which is connected to the pulling member (24). This allows moisture to enter the pyrotechnic signaling means (10) through the ignition device (14). The pyrotechnic signaling means (10) according to the invention provides for the pulling member (24) to be formed from flexible strip-like sections (48, 50), which are connected by film hinges (54) and can be collapsed, saving space, when not in use. The sections (48, 50) can be integrally connected to an operating means (46), such that the entire pulling member (24) can be formed integrally from plastic and manual fitting of the individual components of the pulling member (24) is superfluous. The invention also provides for the ignition device (14) to be sealed by a coupling device (42) of the pulling member (24) until the pyrotechnic signaling means (10) are activated. This means that no moisture can pass through the ignition device (14) before the pyrotechnic signaling means (10) are activated. |
110 |
Aerosol fire-retarding delivery device |
US11279228 |
2006-04-10 |
US07389825B2 |
2008-06-24 |
Marc V Gross; Lawrence T. Weinman |
A fire extinguishing assembly includes an ignition unit and an aerosol generating unit. The ignition unit in one embodiment comprises a spring loaded piston that is held under spring tension by a formed eutectic, which deforms at a predetermined temperature. When such temperature is reached, the piston is released, and strikes a primer to ignite a desired pyrotechnic in the aerosol generating unit. In one embodiment, the piston strikes a primer, which ignites an ignition mix, which further ignites the pyrotechnic. The ignition mix may be formed of the same material as the pyrotechnic. The ignition unit may be releasably engaged with the aerosol generating unit that contains the pyrotechnic. In one embodiment, it is formed with threads for mating with threads on the canister. |
111 |
AEROSOL FIRE-RETARDING DELIVERY DEVICE |
US11279228 |
2006-04-10 |
US20070235200A1 |
2007-10-11 |
Marc V. Gross |
A fire extinguishing assembly includes an ignition unit and an aerosol generating unit. The ignition unit in one embodiment comprises a spring loaded piston that is held under spring tension by a formed eutectic, which deforms at a predetermined temperature. When such temperature is reached, the piston is released, and strikes a primer to ignite a desired pyrotechnic in the aerosol generating unit. In one embodiment, the piston strikes a primer, which ignites an ignition mix, which further ignites the pyrotechnic. The ignition mix may be formed of the same material as the pyrotechnic. The ignition unit may be releasably engaged with the aerosol generating unit that contains the pyrotechnic. In one embodiment, it is formed with threads for mating with threads on the canister. |
112 |
Igniter for exothermic torch rod |
US11326674 |
2005-12-29 |
US07117796B1 |
2006-10-10 |
Kurt D. Bogle; Allen M. Bryant; Steve P. D'Arche; Michael H. Jones; Vic N. Makximenko; Frank L. Soltis; Brent T. Voigtschild |
An igniter's housing is bored continuously there through to define, in succession, several bore regions. A firing pin, slidingly fit in the first bore region, terminates in a tip that protrudes into a primer-filled second bore region when the firing pin is fully seated in the first bore region. An air-filled third bore region follows the second bore region. An open-ended cup is fitted substantially in and sealed to the fourth bore region with the cup's closed end being structurally weakened at a portion thereof. A bored out slug of pyrotechnic material is fitted in the cup. |
113 |
Time delay latch device |
US09888628 |
2001-06-20 |
US06536347B1 |
2003-03-25 |
Alexey T. Zacharin |
A time delay latch device of the arming assembly of a delay fuze which replaces the current system in support of the U.S. Navy Mine Clearing Program. The time delay mechanism is a mechanical run-away escapement having a one-half pound release force that unlatches an 800-pound load. The mechanical force reduction mechanism that makes up the latch device consists of 10 components rather than the existing 31 and a pyrotechnic time delay mechanism consisting of two components in lieu of the existing 14. Hence, the latch device taught herein provides not only the requisite delay and required latch release force but also reduces the total number of components from 44 to 12; thus creating significant cost savings in manufacturing. Time delay latch mechanism is located within the ram shaft that holds the ram shaft spring captive between the ram shafts and housing. The latching mechanism for the ram shaft comprises two ball detents located within the ram shaft and held in place by the housing. Ball detents hold captive a firing pin detent that holds under compression a firing pin spring. A pyrotechnic timing and release element contains a primer, a pyrotechnic delay mix and a propellant. |
114 |
Submarine flare with vertical attitude determination |
US334278 |
1989-02-21 |
US5044281A |
1991-09-03 |
Peter Ramsay; Brian W. Whiffen; Gerald M. Bushnell; Victor Nanut; Robert C. Czigledy; Robert J. Swinton; Maxwell J. Coxhead; Timothy R. Clarke |
A flare (1) for submarine use. The flare (1) is caused to be deployed from a submarine location where it will rise to the surface of the water because of its buoyant casing. A hydrostatic valve means (147) is provided within the casing and it opens when the flare is at or near the surface of the water to render said flare ready to project a flare composition (5) into the air. The hydrostatic valve means (147) is held inoperative by a latch mechanism (51) which is tripped as the flare is deployed from a firing tube at the submarine location. The flare composition (5) cannot be projected into the air until the flare (1) is within a range of vertical attitude determined by inclination means (13). The flare composition (5) cannot be projected into the air until the nose is above water. The flare (1) thus has a sensor (23) at its forward nose to determine that the nose is above the water. A time delay means (87) is provided which is initiated by a pyrotechnic medium (85) used to project the flare composition (5) into the air, to delay ignition of the flare composition (5) until it has at least cleared the surface of the water. |
115 |
Initiating device for a training projectile |
US111599 |
1987-10-23 |
US4827846A |
1989-05-09 |
John Smolnik |
An initiating device which employs discardable arming members is disclosed. The design qualifies as a low cost, responsive, impact initiating system for a practice projectile. The method is embodied in a sub-caliber flight projectile as part of a mortar training device. |
116 |
Safety clip with controlled release force |
US78331 |
1987-07-27 |
US4811470A |
1989-03-14 |
Peter H. Van Sloun |
A safety clip (20) for an ordnance munitions device (10) is fabricated from a wire of resilient material. The clip includes a straight leg (22) having a free locking end (24), an attachment loop (26) carrying a pull ring (27), a back portion (28) having at least one spring element (32), and a closed loop (30) at the terminal end of the back portion (28) for receiving the free locking end (24) of the straight leg (22). The free end (24) extends beyond and through the closed loop (30), and may be extracted from the closed loop (30) essentially by means of a straight, axial pulling force of predetermined magnitude exerted on the pull ring. |
117 |
Tail fin firing device |
US474762 |
1983-03-14 |
US4509427A |
1985-04-09 |
Charles R. Andreoli |
A straight pull cock and fire device is used which permits launching of t fin fire devices. The pressure cartridge produces gas which is routed to a pusher piston through a combined ported manifold and firing device pusher assembly mounting unit. In-line pulls avoid rotational jamming. The spring-loaded actuator pin assures that a minimal level of force is required to initiate the device to avoid random jamming from triggering the device. |
118 |
Bomb fuze arming clip |
US516852 |
1974-10-22 |
US4083304A |
1978-04-11 |
John B. Dexter |
A bomb fuze arming clip made of spring steel and having a substantially triangular or loop shape. A first side of the triangle extends for some distance through a hook in which the end of the third side is formed. The clip is made of spring steel. Downward force on an apex of the triangle forces the extending portion of the first side of the triangle downward through the hook, thereby opening the clip. |
119 |
Safety device for projectiles |
US328127 |
1973-01-30 |
US3991683A |
1976-11-16 |
Max Rentzsch; Gunther Hofmann |
A projectile having a chamber containing a propellant charge with an electric igniter and also having a chamber containing an explosive charge with a time delay fuse. The chambers are separated by a wall in which there is a firing pin actuated by pressure from the propellant charge when ignited to start the time delay fuse. The projectile has a safety pin locking the firing pin in ineffective position and which is withdrawable to arm the projectile. The fuse has a detonator spaced from the firing pin and a heat resistant resilient disc is interposed between the firing pin and detonator and is connected about the periphery to the wall on the side facing the detonator while a passage through the wall equalizes the pressures in the chambers. |
120 |
Hand-held signaling device having manual firing means |
US46307774 |
1974-04-22 |
US3910190A |
1975-10-07 |
DARE SHERMAN E |
A hand-held pyrotechnic device having a housing containing a quantity of pyrotechnic material, a primer for igniting the pyrotechnic material, a spring loaded firing pin for detonating said primer and a slidable barrier for restraining the firing pin until the barrier is first slidably moved and then pivotally moved from the path of the firing pin.
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