Patents Represented by Attorney A. Victor Erkkila

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  • Ordnance training aid
    Patent number: 4014111
    Abstract: A training aid to simulate a warhead to provide realistic training for cring and cutting procedures to gradually release pressure for disablement of the warhead.
    Type: Grant
    Filed: December 9, 1975
    Date of Patent: March 29, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Ralph L. Miller
  • Flexible explosive composition comprising particulate RDX, HMX or PETN and a nitrostarch binder plasticized with TEGDN or TMETN
    Patent number: 4014719
    Abstract: Flexible, self-supporting explosive compositions composed essentially ently of a particulate high explosive RDX, HMX and/or PETN and a nitrostarch binder plasticized with trimethylolethane trinitrate and/or triethyleneglycol dinitrate.
    Type: Grant
    Filed: October 23, 1975
    Date of Patent: March 29, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Franklin B. Wells
  • Vehicle incapacitator
    Patent number: 4014265
    Abstract: 1. A vehicle incapacitator comprisingA rotatable body of cast explosive having at least one cavity therein,A container seated in said cavity and having a flexible sidewall construcn, said sidewall having an opening,A detonator within said container contacting said explosive,A firing pin having a conical forward surface for initiating said detonator, andMeans normally engaging said forward surface larger than said opening and for preventing said firing pin from initiating said detonator until a predetermined centrifugal force is imparted to said preventing means to thereby laterally displace said preventing means through said opening and release said firing pin to impinge on and initiate said detonator.
    Type: Grant
    Filed: October 5, 1964
    Date of Patent: March 29, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Irving L. Kintish
  • Cast TNT explosive containing polyurethane elastomer which is free from oily exudation and voids and uniformly remeltable
    Patent number: 4012245
    Abstract: A castable explosive containing TNT, which in solidified form is essentia free from oil exudation and voids and can be remelted and reused without loss of homogeneity and explosive properties, is produced by incorporating in the molten TNT explosive a polyurethane elastomer-producing system containing an organic polyisocyanate, a hydroxyl-terminated butadiene polymer liquid resin and an abietyl alcohol.
    Type: Grant
    Filed: March 8, 1976
    Date of Patent: March 15, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: H. William Voigt, Jr., Lawrence W. Pell, Jean P. Picard
  • Centrifugal apparatus and method for processing explosives
    Patent number: 4006206
    Abstract: Primary explosives, e.g. lead azide, dispersed in a liquid medium, e.g. enol, are filtered, washed and dried in a novel centrifuge, wherein the rotatable extractor basket has an open bottom, which is closed by peripheral attachment to the large open end of an invertible funnel. The small open end of the funnel is attached to an axial shaft, which can be raised and lowered, whereby said small open end can be held upright to retain the contents in said basket and lowered to invert the funnel to discharge the dried free-flowing explosive particles by gravity through said small open end.
    Type: Grant
    Filed: March 26, 1976
    Date of Patent: February 1, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Robert W. Evans
  • Purification of TNT with magnesium sulfite-bisulfite mixtures
    Patent number: 4003953
    Abstract: Crude TNT is purified by heating with an aqueous mixture of magnesium sulfite and magnesium bisulfite, whereby TNT is recovered in high yield and purity. The spent aqueous solution can be furnaced to recover magnesium oxide, which can be recycled to the process.
    Type: Grant
    Filed: February 23, 1976
    Date of Patent: January 18, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Everett E. Gilbert
  • Reaction product of normal lead beta resorcylate and monobasic cupric salicylate
    Patent number: 4001287
    Abstract: An organo-metallic ballistic modifier produced as an evaporation residue by he reaction of normal lead beta resorcylate and monobasic cupric salicylate in an aqueous solution of water or alcohol at an elevated temperature (180.degree. F - 220.degree. F). The modifier allows the use of a solvent or solvent/solventless process in the production of double base propellants exhibiting a mesa burning rate.
    Type: Grant
    Filed: February 18, 1972
    Date of Patent: January 4, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Thomas E. Dunigan, George C. Sisco
  • Process for suspending particulate additives in molten TNT
    Patent number: 4000021
    Abstract: Composite explosive slurries of good stability and flow properties are obned by dispersing particulate solid components, e.g. RDX, NH.sub.4 NO.sub.3 and Al, in molten TNT in the presence of a small amount of arabinogalactan or gum arabic to inhibit segregation of the suspended solids.
    Type: Grant
    Filed: August 22, 1975
    Date of Patent: December 28, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: H. William Voigt, Jr.
  • Centrifuge having an inner, invertible, funnel-like container
    Patent number: 4000074
    Abstract: Primary explosives, e.g. lead azide, dispersed in a liquid medium, e.g. enol, are filtered, washed and dried in a novel centrifuge, wherein the rotatable extractor basket has an open bottom, which is closed by peripheral attachment to the large open end of an invertible funnel. The small open end of the funnel is attached to an axial shaft, which can be raised and lowered, whereby said small open end can be held upright to retain the contents in said basket and lowered to invert the funnel to discharge the dried free-flowing explosive particles by gravity through said small open end.
    Type: Grant
    Filed: September 20, 1974
    Date of Patent: December 28, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Robert W. Evans
  • Apparatus for removing explosive material from a centrifuge basket
    Patent number: 3998381
    Abstract: A spring supported disc holder, having a plurality of discs affixed there is fixedly attached to the rear convex side of a plow member which is rotatably supported within a centrifuge basket. The disc holder assembly provides for the removal of a residual layer of explosive material at the same time that the plow member safely removes a main body of explosive accumulated material from the interior wall of the centrifuge basket.
    Type: Grant
    Filed: January 27, 1976
    Date of Patent: December 21, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Lorin Richard Daub
  • Self-destruct delay fuze
    Patent number: 3998164
    Abstract: A conventional impact-sensitive fuze for an explosive projectile, compris a support frame having a transverse channel, containing an arming slider having a locking hole and a detonator, and an axial opening in which a firing pin is slidably mounted by means of a slidable weight in which the firing pin is threaded, is modified by substituting, for the firing pin, a tubular firing pin support containing a timing member having a shaft and a head or paddle forming part of a retarding dashpot, and a spring-loaded firing pin connected to the timing member shaft by a camming pin and helical slot connection. In safe condition, the firing pin is in forward position engaging the locking hole in the slider. When the firing pin support and firing pin are retracted, the slider moves into armed position, and the timing member starts to rotate, retarded by the dashpot.
    Type: Grant
    Filed: December 15, 1975
    Date of Patent: December 21, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Harry J. Hadfield
  • Jungle penetration munition
    Patent number: 3996857
    Abstract: A jungle penetration munition is produced which will pierce thick jungle iage and function approximately six feet above the jungle floor.
    Type: Grant
    Filed: May 10, 1972
    Date of Patent: December 14, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: William V. Padula, William Serensen, Jr.
  • Ballistic modifiers
    Patent number: 3996080
    Abstract: Ballistic modification is accomplished by incorporation oxides of lead and in in nitramine double-base propellants.
    Type: Grant
    Filed: December 16, 1971
    Date of Patent: December 7, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Joseph S. Stack, deceased
  • Bounding anti-personnel mine
    Patent number: 3994227
    Abstract: A mine casing containing an ejection barrel is closed by a shear releasab slidable and rotatable cover for providing an armed and a safe position. The barrel is rotatably coupled to the cover and carries a slidable belleville spring assembly including a belleville spring containing a firing pin which rests on the base of the casing and is aligned with a primer communicating with a delay column. An apertured safety plate rotatably coupled to the barrel is positioned between the delay column and ejection propellant communicating with a recess in a fragmentation sphere containing a high explosive nesting in the upper contoured portion of the barrel. The recess contains an ignition delay and a booster charge for detonating the high explosive. In the safe position the barrel cannot move downwardly and the safety plate prevents communication between the delay and propellant.
    Type: Grant
    Filed: October 6, 1971
    Date of Patent: November 30, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Wallace J. Harvey
  • Novel ballistic modifier resistant to hydrolysis
    Patent number: 3994946
    Abstract: A novel ballistic modifier complex is produced by mixing and interacting an rganic isocyanate with lead beta resorcylate and cupric salicylate in an inert solvent. The complex product obtained after removal of the solvent, when incorporated into a nitrocellulose-nitroglycerine double base propellant, yields a propellant composition of excellent ballistic properties and improved stability against development of exudate which inhibits ignition.
    Type: Grant
    Filed: January 3, 1973
    Date of Patent: November 30, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Thomas E. Dunigan, George C. Sisco, Lawrence W. Pell
  • Castable composite explosive compositions containing a mixture of trinitrobenzene and trinitroxylene
    Patent number: 3994756
    Abstract: Castable composite explosive compositions contain a fusible matrix of about 0 to 95% by weight of trinitrobenzene and about 5 to 20% by weight of trinitroxylene and a particulate explosive melting substantially higher than said mixture.
    Type: Grant
    Filed: November 26, 1975
    Date of Patent: November 30, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: John R. Hendrickson, Sr., Franklin B. Wells
  • Flueric explosive initiation device for a fuel-air explosive bomb
    Patent number: 3994226
    Abstract: A flueric initiator for a fuel-air explosive bomb possesses a sealed hous containing a pressurized gas, a plurality of igniter devices and a means for rupturing the housing and ejecting the igniter devices into the atmosphere. Each igniter device consists of a small gas container, a resonance tube, and explosive charge adjacent to the closed end of the resonance tube, and a nozzle connected to the gas container and communicating with the housing plenum through one or more vents. The housing is initially charged to a pressure considerably higher than the functioning pressure of the nozzle-resonance tube combination.
    Type: Grant
    Filed: December 18, 1975
    Date of Patent: November 30, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Edward L. Rakowsky, Vincent P. Marchese, Anthony P. Corrado
  • Pneumatic match through use of a conical nozzle flare
    Patent number: 3994232
    Abstract: An improved pneumatic match utilizes a vented conically shaped nozzle flare ositioned in a downstream region of a convergent nozzle to permit the match to be used in applications where fast functioning time is a necessity and where the fluid activating medium comprises a low helium pressure source or only high pressure air.
    Type: Grant
    Filed: August 22, 1975
    Date of Patent: November 30, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Edward L. Rakowsky, Vincent P. Marchese, Robert H. Page, Anthony P. Corrado
  • Ballistic modifier resistant to hydrolysis
    Patent number: 3994757
    Abstract: A novel ballistic modifier complex is produced by mixing and interacting an rganic isocyanate with lead beta resorcylate and cupric salicylate in an inert solvent. The complex product obtained after removal of the solvent, when incorporated into a nitrocellulose-nitroglycerine double base propellant, yields a propellant composition of excellent ballistic properties and improved stability against development of exudate which inhibits ignition.
    Type: Grant
    Filed: May 4, 1971
    Date of Patent: November 30, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Thomas E. Dunigan, George C. Sisco, Lawrence W. Pell
  • Personal blast protection armor
    Patent number: 3991421
    Abstract: A plurality of interlocking reinforced barrel shaped plastic torso fitting embers has a transparent vented plastic head piece threadedly connected thereto. The torso members are suspended and attached to the wearer by adjustable strapping. Compliant material is used intermediate the shock resisting members and the wearer to help position the armor on the wearer and to attenuate the transmission of blast shock waves from the armor to the wearer. The openings in the armor, to accommodate the wearer's appendages, are hermetically sealed by a lining made of rubber material. Air for breathing is brought into the helmet and exhausted therefrom by intake and exhaust check-valves which are actuated by the wearer's normal breathing.
    Type: Grant
    Filed: September 9, 1975
    Date of Patent: November 16, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Charles L. Stratten