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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 4008667 | Controlled range bullet A bullet including the lead body in combination with a rotary aerodynamic brake. The brake is non-operative over a specified distance after firing so as not to degrade the bullet's lethal effectiveness. However, upon reaching the distance limit the brake ... | 02/22/1977 |
| 4000697 | Mechanical retention system for use with caseless ammunition An internally threaded igniter tube is threadably attached to a boss on the projectile base. In order to withstand ramming, a diametral flange at the base of the round engages a shoulder on the propellant so that when the igniter is in the assembled posit... | 01/04/1977 |
| 3988397 | Pressed block fuel elements for gas cooled high temperature power reactors and processes for their production Block fuel elements for high temperature power reactors that can be reprocessed simply are prepared in which the feed and breed zones are connected with the graphite matrix directly and without transition. They are disposed separately from each other in s... | 10/26/1976 |
| 3985076 | Gas generator An electric squib igniter and a gas generant composition surrounding it are enclosed in a hermetically sealed container. This is enclosed in an inner housing which is surrounded by an annular outer housing. An annular filter surrounds the gas generant com... | 10/12/1976 |
| 3982223 | Composite acoustic lens Composite acoustic lens assemblies which are adapted for use in a fluid medium and utilized for forming acoustic images with incident acoustic waves or focusing incident acoustic waves are constructed utilizing two or more lens elements with a fluid fille... | 09/21/1976 |
| 3981222 | Time delay fuse 1. A method of making a time delay fuse comprising the steps of overlaying a fuse strip consisting essentially of a paper formed of non-combustible insulating fibers filled with a combustible compositon which evolves substantially no gas on burning with a... | 09/21/1976 |
| 3973402 | Cycle improvement for nuclear steam power plant A pressure-increasing ejector element is disposed in an extraction line intermediate to a high pressure turbine element and a feedwater heater. The ejector utilizes high pressure fluid from a reheater drain as the motive fluid to increase the pressure at ... | 08/10/1976 |
| 3972286 | Bullet A ricochet-resistant bullet has a tip of impact frangible material, and a hollow casing filled with heavy particles, which may be wet or suspended in a liquid, and dispersible upon frangible impact of the bullet with a target.... | 08/03/1976 |
| 3971695 | Method and apparatus for the production of filter plugs Apparatus for making filter plugs wherein the extent to which the tow is stretched or the rate of transport of a uniformly stretched tow to the wrapping mechanism is controlled by a testing unit which determines the resistance of filter plugs to axial flo... | 07/27/1976 |
| 3970517 | Process of safely compacting a radio-active material into a solid body A process for compacting a granular radio-active material into a sealed solid body for use as a heat source, the process carried out in a hot-cell which is partially evacuated.... | 07/20/1976 |
| 3967526 | Apparatus for lubricating and sizing slugs An automated machine for lubricating and sizing cast lead slugs and including a body having a slug passage comprising vertical and horizontal legs extending therethrough, the horizontal portion of said passage including a sizing die which insures a unifor... | 07/06/1976 |
| 3966549 | Pressurized-water coolant reactor installation A pressurized-water coolant reactor installation includes a reactor pressure vessel, a steam generator containing a heat exchanger through which coolant from the vessel is circulated, and a single pipe interconnecting the vessel and generator and internal... | 06/29/1976 |
| 3964390 | Bursting disc assembly A bursting disc assembly wherein an explosive charge is positioned close to a destructible area of the disc within a shear line.... | 06/22/1976 |
| 3964394 | Pyrochemical gas generator A pyrochemical gas generator, comprises a cylindrical receptacle which includes a hollow cylindrical bottom portion having an interior bottom wall with a plurality of individual cylindrical recesses for receiving individual charges defined directly on the... | 06/22/1976 |
| 3961554 | Method for making incendiary lines for ordnance A slug or billet of incendiary material is placed in a projectile body and oth are heated to a temperature at which the incendiary material can easily be formed. A deep drawn metal cup, formed in the shape of the desired explosive cavity, is rammed or forc... | 06/08/1976 |
| 3961581 | Ignitor element for a generator of hot gas The igniter of the generator is constituted by a deformable plate of solid ropergol bound and fixed on a wooden or metal sleeve mandrel. The plate has open striae parallel to the axis of the support and oriented radially inwards or outwards. The device is ... | 06/08/1976 |
| 3962032 | Fast nuclear reactor A fast reactor of the sodium-cooled type comprises a vertical main vessel for supporting the reactor core and an internal primary vessel for separating the hot sodium discharged from the reactor core from the cold sodium discharged from the heat exchanger... | 06/08/1976 |
| 3961579 | Destructive devices A destructive device for the destruction of equipment such as machines, tanks, and tank gun barrels for example, includes a casing, an alumino-thermic mixture carried therein, and an ignition fuse. The mixture is arranged such that, upon ignition, a heat-... | 06/08/1976 |
| 3960468 | Fluid lubricated bearing assembly 1. A support for a loaded rotatable shaft comprising in combination on a housing having a fluid-tight cavity encasing an end portion of said shaft, a thrust bearing near the open end of said cavity for supporting the axial thrust of said shaft, said thrus... | 06/01/1976 |
| 3957560 | Method of cementing together the cap, body, and stem of electrical insulators Method of cementing together the cap, body and stem portions of electrical insulators, comprising introducing measured quantities of water and cement into the cavities of the cap and body, mixing the ingredients within the cavities and immediately assembl... | 05/18/1976 |
| 3954062 | Caseless propellant charges Porous propellant composition for caseless charges is improved by compressing the composition to an average pressure of at least 1,000 psi. The invention also includes the improved propellant charges.... | 05/04/1976 |
| 3952663 | Diffuser This invention deals with the problem of premature functioning of shells with point detonating fuzes. A diffuser is provided in a fuze head to prevent a direct impact on the detonator by providing an effective cover to all elements of the detonator. This ... | 04/27/1976 |
| 3952664 | Rocket nozzle multi function A rocket motor assembly for a rocket motor utilized for towing a load or racting an aircrew member from an aircraft. The rocket motor is formed in two separate sections, a casing portion and a unitary nozzle igniter housing portion. The nozzle and ignite... | 04/27/1976 |
| 3952832 | Pulsed high pressure liquid propellant combustion powered seismic sources A liquid propellant is burned in the bulk mode and in pulses to produce high combustion pressures with large power outputs. The pulsed high pressure liquid propellant combustion is also used for producing sound waves for underwater seismic exploration. Th... | 04/27/1976 |
| 3952627 | Slot former assembly for use in solid propellant rocket motors 1. A slot former assembly for use in fabricating the solid propellant in a motor case for a solid propellant rocket motor comprising an outer hollow core, an inner tubular core and a flexible slot former comprising a skeleton frame consisting of stiffenin... | 04/27/1976 |
| 3952657 | Rifle cartridge A cartridge includes a projectile which is inserted in a plastic shell receiving a propellant charge and the cartridge is expelled out of a barrel by propellant gases. The present invention resides in that the plastic shell is formed with a drive cage for... | 04/27/1976 |
| 3951737 | Power generating plant with a gas-cooled nuclear reactor with closed gas circulation A power generating plant equipped with gas-cooled nuclear reactor with closed gas circulation system leading through at least one compressor, the reactor, through a first and a second gas turbine and back to the compressor. One of the gas turbines is in d... | 04/20/1976 |
| 3949676 | Load actuated electro-ignition circuit switch An igniter mechanism for a rocket motor utilized for towing a load or extting an air crew member from a disabled aircraft. The mechanism operates whenever a sufficient force is exerted on the tow line to shear a pin allowing closure of the switch. Electr... | 04/13/1976 |
| 3949027 | Manufacturing process for improved nuclear fuel tablets Process for manufacturing improved nuclear fuel pellets, including compacting ceramic powder in the Compaction chamber of a pelletizing machine with only the lower punch moving on compaction, wherein the walls of the compaction chamber are widened on at l... | 04/06/1976 |
| 3949026 | Method of fabrication of fuel elements for nuclear reactors A graphite jacket for a fuel element for nuclear reactors is made by placing a dry mixture of graphite and a powdered thermosetting resin in a mold without application of pressure and heating said mixture to thermoset said resin and then subjecting to a c... | 04/06/1976 |
| 3949348 | Sonar apparatus A side looking sonar transducer which has sound absorbing material extending forwardly of the active surface of the transducer elements to diminish the acoustic response over a predetermined zone for reducing the effect of erroneous reflection signals.... | 04/06/1976 |
| 3949349 | Dual electroacoustic transducers Electroacoustic transducers are nested to provide a centrally vibrating portion and a peripherally vibrating portion. The phases of the two transducers may be adjusted with respect to each other in order to provide a variety of beam patterns.... | 04/06/1976 |
| 3947802 | Omnidirectional low noise piezoelectric transducer A piezoelectric ceramic transducer assembly for broadband noise-measuring drophone. A longitudinally polarized lead zirconate-titanate cylinder provided with end caps is sealed by O-rings within a circumferentially polarized lead zirconate-titanate cylind... | 03/30/1976 |
| 3946673 | Pyrophoris penetrator Alloys of tungsten, zirconium and one or more binder metals are utilized as yrophoric penetrators.... | 03/30/1976 |
| 3945324 | Projectile fuse A fuse assembly for use with projectiles such as shells, bombs, torpedoes and the like provided with an elongated extension rod which imparts to the fuse mechanical proximity characteristics and which is so dimensioned as to maintain optical ballistic cha... | 03/23/1976 |
| 3945323 | Impact and self-destruct fuze An omnidirectional impact and self-destruct fuze for initiation of a gren has a primer which after being initiated ignites a delay column. The delay column melts an eutectic metal arming plug which unlocks a ball detent to permit a striker assembly to be... | 03/23/1976 |
| 3943856 | Hot gas generators, powder charges therefor, and process of production thereof In a hot gas generator with lamellar powder charge, the charge comprises a plurality of powder lamellae disposed side by side at regularly spaced intervals and projecting from a flexible shoe in which they are anchored by partial penetration into the shoe... | 03/16/1976 |
| 3942445 | High altitude friction igniter A friction igniter assembly for high altitude operation having a pull wire oated with a scratch sensitive composition which is moved through a chlorate composition. The scratch sensitive composition containing red phosphorus reacts with the chlorate to pro... | 03/09/1976 |
| 3942443 | Rocket assisted projectile An improved projectile suitable for use in artillery pieces, though preferably in the higher calibres, is disclosed wherein projectile range upon launching by the gun is considerably extended by means of a propellant rocket motor in combination therewith ... | 03/09/1976 |
| 3939467 | Transducer An electroacoustical transducer is disclosed as incorporating a metallic sing having an aperture located in the wall thereof. A plurality of shutters are rotatably mounted on said housing for effectively and timely opening and closing predetermined porti... | 02/17/1976 |
