Patents by Inventor Thelma Manning

Thelma Manning has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5798481
    Abstract: A high energy propellant, comprising at least one oxidizer; a nitrocellul binder; an ethyl centralite stabilizer; a plasticizer; and an oxetane thermoplastic elastomer energetic binder. The oxetane thermoplastic elastomer energetic binder comprises from about zero percent to about fifteen percent by weight of the propellant. The preferred oxidizer is selected from the group consisting of CL-20, TNAZ, RDX, HMX and mixtures thereof. The oxidizer comprises from about five percent to about forth percent by weight of the propellant. The nitrocellulose binder comprises from about fifteen percent to about fifty percent by weight of the propellant and the ethyl centralite stabilizer comprises from about 0.7 percent to about 1.5 percent by weight of the propellant. The plasticizer is selected from the group consisting of TNAZ, BTTN, TMETN, TEGDN, BDNPA/F, methyl NENA, ethyl NENA and mixtures thereof. The plasticizer comprises from about five percent to about thirty-five percent by weight of the propellant.
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: August 25, 1998
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Thelma Manning, Bernard Strauss, Joseph P. Prezelski, Sam Moy
  • Patent number: 5716557
    Abstract: A method of formulating high energy explosives and propellants, including e steps of melting the explosive at a temperature just above its melting temperature, admixing and dissolving or plasticizing a binder, and extruding or casting the resultant solution into a useful form for further forming the resulting material into a munitions. The first step in this method includes the use of any high energy explosive material. Examples of these include hexanitrohexaazaisowurtzitane or CL-20, 1,3,3-trinitroazetidine or TNAZ, 2,4,6-trinitrotoluene or S-TNT, 1,3,5-trinitrobenzene or S-TNB, HMX, RDX, butane-trio-trinitrate or BTTN, trimethylolethane trinitrate or TMETN; triethylene glycol dinitrate or TEGDN, bis, 2,2-dinitro propyl acetal/bis 2,2 dinitro propyl formal or BDNPA/F, methyl nitrato ethyl nitramine or methyl NENA, ethyl NENA, mixtures thereof and the like.
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: February 10, 1998
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Bernard Strauss, Thelma Manning, Joseph P. Prezelski, Sam Moy
  • Patent number: 5690868
    Abstract: A multi-layer propellant and a method for making the same is provided, in ich the propellant has at least one slow burning formulation and at least one fast burning formulation, such that the ratio of these burning rates is at least 2:1. The propellant produces an impetus of at least 1300 Joules/gm. The preferred binder is a high energy oxetane thermoplastic elastomer. The preferred slow burning formulation employs RDX, while the preferred fast burning formulation employs CL-20. The two formulations are formed separately, such as in layers that are then fused, using the bonding strength of the binder. The shape may be any shape that is useful in munitions and may include one or many layers of each burning rate. Preferred shapes include a multi-layered propellant with one slow burning formulation on top and a bottom layer of the fast burning formulation. The layers may be formed from ribbons, discs, cones, truncated cones and partial spheres.
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: November 25, 1997
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Bernard Strauss, Thelma Manning, Joseph P. Prezelski, Sam Moy
  • Patent number: 5472531
    Abstract: The explosive blasting composition in this invention contains 1 to 40 pert Aluminum powder, 40 to 80 percent Cyclotetramethylene Tetranitramine, 4 to 15 percent Cellulose Acetate Butyrate, 5 to 20 percent of 1:1 mixture of bis 2,2-dinitropropyl acetate and bis 2,2-dinitropropyl formal, and, and 0.25 to 0.75 percent Tri (dioctyl Phosphato) Titanate.The method of making the above composition consists of combining Cyclotetramethylene Tetranitramine, Cellulose Acetate Buterate, 1:1 bis 2,2-dinitropropyl acetate and bis 2,2-dinitropropropyl formal, and tri (dioctyl phosphato) titanate, mixed at an elevated temperature for a period of time. Prior to blowdown, the Aluminum powder is added. to the mix. Mixing continues and blowdown is initiated to remove excess solvents for the purpose of extrusion.
    Type: Grant
    Filed: February 1, 1995
    Date of Patent: December 5, 1995
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Joseph Turci, Mark Mezger, Bernard Strauss, Thelma Manning