...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 6789485 | Gas generator and method of assembly Assembly of a gas generator 10 includes the step of adding uncured silicone to a propellant cup 25. Granulated oxidizer is then added over the top of the silicone and allowed to disperse therein. Afterwards, the silicone is cured to provide flush commu... | 09/14/2004 |
| 6635197 | Method and apparatus for casting molten materials using phase-change material A method and apparatus for casting a molten material using a phase-change material. A funnel means is provided that includes a reservoir containing a phase-change material. The funnel means is used in conjunction with a mold. The phase-change material is ... | 10/21/2003 |
| 6520089 | Method for setting and igniting a charge of explosives for geological investigations and explosive device associated therewith A method for setting and igniting a charge of explosives for geological investigations, comprising the following steps: a hole (14) is drilled in the ground (12) which is to be investigated; an explosion chamber (22) is hollowed out, whereby said explosio... | 02/18/2003 |
| 6360666 | Alignment fixture An apparatus for use in filling and capping artillery charge system modules or the like including a lower fixture carried by a base plate for receiving a module with an open center core tube and fixing the module in place relative to the base plate for fi... | 03/26/2002 |
| 6343552 | Solvent application system A system and method for use in providing a peripheral seal between the case and lid of a MACS modular unit or other workpiece interface, the system including a workpiece holding device for carrying and moving a workpiece of interest in relation to a solve... | 02/05/2002 |
| 5928576 | Cap-sensitive watergel explosive composition production process A watergel explosive composition is described which contains an oxidiser salt, a sensitiser, a thickener, a crosslinking agent, a fuel and less than 8%, by mass, of the composition of water. The explosive composition is cap sensitive in packages or cartri... | 07/27/1999 |
| 5682004 | Apparatus for reduction of the grain size of crystalline explosive A method and an apparatus for reducing the grain size of crystalline explosive provide for, first of all, dissolving the coarse crystalline explosive in an organic solvent. Subsequently, the dissolved explosive is brought together with ice water in a prec... | 10/28/1997 |
| 5619073 | Propellant grains and process for the production thereof A batch process produces unitary grains of propellant material. A constituent mixture of the material is prepared by mixing constituents while heating to at least a predetermined pouring temperature within a permissible temperature range. The constituent ... | 04/08/1997 |
| 5477769 | Process to enhance safety of cast explosive composite A cast explosive composite of a nitramine which has been precoated, and T The nitramine can be, for example, cyclotrimethylene trinitramine (RDX) or cyclotetramethylene tetranitramine (HMX). The precoating can be a TNT-insoluble wax or an anti-exuding ma... | 12/26/1995 |
| 5456455 | Flare pellet and process for making same A process forms decoy flare pellets which satisfy predetermined burn requirements without milling additional grooves into the pellet flare material after that material is consolidated. The process includes providing sufficient surface area to the flare ma... | 10/10/1995 |
| 5442989 | Frangible armor piercing incendiary projectile The method of making the casing comprises the steps of preparing a powder mixture consisting predominantly of a metal powder mixed with a minor proportion of graphite powder ranging from about 0.2% to about 2%, preferably 0.8% by weight, while the metal p... | 08/22/1995 |
| 5323681 | Shaping apparatus for an explosive charge The invention provides a shaping apparatus for an explosive charge to be d with an Explosively Formed Penetrator (EFP). The shaping apparatus comprises a nonmetal mold in the form of a frustum of a cone with a latch and hinge attached thereto. The mold i... | 06/28/1994 |
| 5243914 | Caseless ammunition This invention deals with case-less ammunition, the propelling element of which has increased solidity. This increase in solidity is achieved by virtue of the fact that the propelling charge is firmly enveloped in a fabric. The fabric may consist of compl... | 09/14/1993 |
| 5209876 | Cloth-lined interceptor motor insulation for strong insulation-to-propellant interlock A method of providing a very strong mechanical interlock between the insuor and propellant of an interceptor rocket motor by employing a first lay-up material comprised of a cloth mat of woven cotton cloth (muslin) over a release liner with bleeder which... | 05/11/1993 |
| 5114630 | Continuous manufacture and casting Fluid products, particularly highly filled materials, are manufactured and cast in a continuous system utilizing feedforward composition quality control and plug flow. Liquid and solid raw are supplied to, and combined in, a continuous fluid flow system i... | 05/19/1992 |
| 5069133 | Elastomer-containing casings for propellants The present invention relates to a process for producing an encased propellant which comprises overwrapping at least one charge of propellant with an elastomeric coating composition to produce the desired encased propellant. The process is suitably effect... | 12/03/1991 |
| 5062343 | Method and a device for filling a space in an ammunition unit with explosive The present invention comprises a method and apparatus for filling a space in at least one ammunition unit with a ready-mixed explosive containing a substance which imparts high viscosity to the explosive. The method comprises supplying the explosive into... | 11/05/1991 |
| 5061409 | Extrusion of impact and friction sensitive highly energetic materials Substituting non-metallic screw elements for the previously used metal screw elements in twin-screw extruders reduces the hazards inherent in the extrusion of highly energetic materials which exhibit impact and friction sensitivity when processed in twin ... | 10/29/1991 |
| 4963296 | Process for the preparation of propellant charge powder A process is provided for the preparation of dibasic propellant charge powder by a solvent-free process, in which a continuous flow of raw powder mixture moist with water is kneaded at an elevated temperature in a set of shearing rollers, to which the raw... | 10/16/1990 |
| 4945808 | Primer A primer for an explosive charge which is to be initiated by a fuse cord is sensitized by a loose charge of a high explosive, this high explosive being contained in a rigid, impermeable container which is so shaped that at least partially surrounds the fu... | 08/07/1990 |
| 4915883 | Method of and apparatus for purging an annular bayonet An annular bayonet vacuum cup allows a vacuum to be pulled on an annular bayonet and the bayonet to be filled with propellant that is devoid of air. The vacuum cup is transparent/translucent and allows the propellant to be seen as it leaves the exit end o... | 04/10/1990 |
| 4901619 | Shaped charge with barrier produced in situ In the inventive shaped charge, the main charge and the propagating charge are held together solely by the barrier. This union is possible (and is distinguished by pronounced freedom from flaws) because the barrier is produced directly in the cavity in wh... | 02/20/1990 |
| 4870884 | Incendiary projectile, method of introducing the incendiary composition into the projectile and arrangement for implementing the method An incendiary projectile possessing an incendiary composition arranged locally bonded about the internal casing surface of the projectile wall structure. The projectile has the inner casing surface of its wall structure covered with the incendiary composi... | 10/03/1989 |
| 4836961 | Method of and apparatus for casting solid propellant rocket motors A method of and apparatus for casting uncured solid propellant in solid propellant rocket motors includes a casting bayonet having annular slits formed in the exit end thereof that improve the fluidity and self-leveling behavior of the uncured propellant.... | 06/06/1989 |
| 4817685 | Apparatus and method for simultaneously filling multiple munitions items with explosive Apparatus and method are provided for stirring an explosive materials mixture maintained in a molten state to ensure homogeneity of its composition and for simultaneous transfer of predetermined quantities thereof, by effecting the transfers primarily in ... | 04/04/1989 |
| 4813331 | Apparatus and method for filling individual munitions items with explosive Apparatus and method are provided for stirring an explosive materials mixe maintained in a molten state to ensure homogeneity of its composition and for transfer of predetermined quantities thereof, by transfers primarily in a horizontal direction, via a... | 03/21/1989 |
| 4764316 | Process for preparing solid propellant grains using thermoplastic binders and product thereof Thermoplastic elastomer particulates, oxidizer particulates, fuel particulates, plasticizers and other propellant formulation ingredients are mixed to produce a dry blend. The dry blend is tightly packed into a rocket motor casing or mold. The dry blend i... | 08/16/1988 |
| 4730534 | Plant for realizing the running-in of a fluid comprising an explosible component The invention relates to a process for realizing the running-in of a fluid comprising at least an explosible component sensitive to shocks and/or rubbing. The process of the invention consists in filling the moulds 2 with a specified quantity of casting p... | 03/15/1988 |
| 4694727 | Situ disposable gel canister A method and apparatus for making an in situ disposable propellant canister for utilization in controlled pulse fracturing. Said canister is composed of a porous light fabric material in combination with a gel solution. The gel creates a formable mass aft... | 09/22/1987 |
| 4685375 | Mix-delivery system for explosives Method and apparatus for making aqueous slurry explosives are disclosed. The components of the aqueous slurry explosive are mixed in a variable speed rotary mixer where the speed of the mixer is determined by the sequence of addition of the explosive comp... | 08/11/1987 |
| 4577542 | Dome restraint assembly for rocket motors An adjustable restraint assembly connectable between a dome portion of a solid propellant rocket motor casing and a rigid base or support, for use during the curing of a propellant in the casing. The assembly includes an upper attach bracket connectable t... | 03/25/1986 |
| 4474715 | Pyrotechnic smoke charge with preset breaking points and channel ignitor Described is a pyrotechnic charge as smoke- or combustion charge in the form of separate pressed objects arranged in a case, the improvement comprising the fact that the case (1) for the pressed objects (3) consists of plastic or light metal provided with... | 10/02/1984 |
| 4464993 | Process for use in blasting in situ retorts and the like An improved process is provided for blasting in situ oil shale retorts, and oil and gas wells. In the process, a specially formed concrete plug is installed at a desired depth in a bottomless blast hole and an explosive charge is placed upon the plug and ... | 08/14/1984 |
| 4422382 | Explosive container of interconnected thermoplastic film packages A thermoplastic film package containing a blasting explosive is provided having utility in secondary blasting operations. The package comprises superimposed film panels joined along their periphery to form a bag and having closeable neck-like openings at ... | 12/27/1983 |
| 4409155 | Explosive booster manufacture A semi-automatic, semi-continuous method is provided for the manufacture of cast explosive boosters. The method makes us of a mold assembly which is transported through filling, cooling and disassembly stations in a substantially continuous manner with li... | 10/11/1983 |
| 4393014 | Method of casting explosive charge with high solids content A high solids content explosive charge is formed by placing the dry solids uch as RDX in a mold, adding TNT over the dry solids and holding the interior of the mold at an elevated temperature and reduced pressure to permit diffusion of the liquid TNT throu... | 07/12/1983 |
| 4380186 | Method and apparatus for fabricating pipeless explosive and propellant charges For the fabrication of pipeless explosive and/or propellant charges there is provided an insulation sleeve, whose radial thermal conductivity or heat transmission, at a random cross-section, essentially corresponds to the quantity of heat which radially f... | 04/19/1983 |
| 4369689 | Method for mixing and placing explosive compositions A process, and apparatus for performing same, of simultaneous mixing and placement of an explosive composition comprising a dispersion of an explosive component located in and immobilized by a solidified foamed non-explosive matrix.... | 01/25/1983 |
| 4336209 | Process and device for preparing cast explosive bodies Explosive bodies for use in hollow-charges are produced by casting a mixture of solid, particulate explosive material dispersed in melted explosive material. The sedimentation of solid explosive in melted explosive is carried out in an undisturbed manner ... | 06/22/1982 |
| 4305324 | Projectile charges Charge for an explosive projectile characterized in that it comprises a plurality of adjacent, coaxial and annular layers, the peripheral layer having a higher content of heavy powerful explosive than the immediately adjacent layer and so on to the centra... | 12/15/1981 |