Patents Represented by Attorney Kalman Pollen

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  • Complex of nitrocellulose as propellant
    Patent number: 4033798
    Abstract: A solution comprising nitrocellulose and a nitramine consisting of either X (Hexahydro-1,3,5-trinitro-s-triazine), HMX (Octahydro-1,3,5,7-tetranitro-s-tetrazine), or mixtures thereof is dissolved in a volatile, liquid acetate ester, evaporated at room temperature to form a film, and then dried. The resulting material is a homogeneous, hydrogen-bonded complex of nitrocellulose and the nitramine, useful as an energetic propellant.
    Type: Grant
    Filed: March 29, 1976
    Date of Patent: July 5, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Bruce W. Brodman, Michael P. Devine, Stuart Schwartz
  • Micro particle generation
    Patent number: 4031301
    Abstract: Scavenger aerosol sprayed into first aerosol containing solute dissolved in olvent picks up solvent leaving behind solute as micro particles. Scavenger aerosol consists of a liquid which sequesters the solvent of the first aerosol from its solute by exhibiting a greater chemical affinity for the solvent than for the solute therein.
    Type: Grant
    Filed: September 10, 1975
    Date of Patent: June 21, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: George Vinansky, Jr., Emmanuel A. Lucia
  • Apodization filter
    Patent number: 4030817
    Abstract: Improved apodization filter serving as the field stop of a scanning radiometer and attenuating unwanted light modulation signals when scanning edges of any field of view resulting in more accurate radiometric measurements.
    Type: Grant
    Filed: March 22, 1976
    Date of Patent: June 21, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: William E. Westell
  • Adhesive tetrazole polymers and process of making therefor
    Patent number: 4013596
    Abstract: New tetrazole polymers are formed from a self-polymerization condensation action effected by adding tetrazoles of the formula below to a solution containing an equivalent of base or slightly less than an equivalent and heating for about 5 days at temperatures of 50.degree.-100.degree. C: ##STR1## where Z is CH.sub.2 CH.sub.2 X or NHCOCH.sub.2, and where X is Br, Cl, or I. The polytetrazoles serve as binders in propellant systems and also supply added energy thereto.
    Type: Grant
    Filed: March 7, 1975
    Date of Patent: March 22, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Fred J. Einberg
  • Viscosity stabilized solution of ethyl cellulose
    Patent number: 4011095
    Abstract: Heating a solution of ethyl cellulose in n-butyl acetate and ethyl lactate t about 80.degree.-110.degree. C for at least one hour provides a viscosity stabilized solution useful as a deterrent coating for propellant actuated devices.
    Type: Grant
    Filed: March 31, 1975
    Date of Patent: March 8, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Abraham Mertwoy, Henry Gisser
  • Extended range tracer folded cup
    Patent number: 3972291
    Abstract: Tracer projectile having an enlarged diameter cavity wherein pyrotechnic cer mixture therein is caused to end-burn sequentially in opposed directions by means of a folded cup-shaped device to thereby extend the duration of visibility and improve the quality of downrange visibility of the tracer and yet permit ballistics of the projectile to remain unaffected.
    Type: Grant
    Filed: November 22, 1974
    Date of Patent: August 3, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Frank E. Braun, Jr., Wilmer White
  • Copolymers of methyl .alpha.-n-alkylacrylate and methyl methacrylate
    Patent number: 3972864
    Abstract: Methyl methacrylate and methyl .alpha.-n-alkylacrylate wherein the alkyl up may vary from 10 to 22 carbon atoms copolymerize at about 50.degree.C in the presence of azobisisobutyronitrile to form polymers having low coefficients of friction and good wear properties.
    Type: Grant
    Filed: February 19, 1975
    Date of Patent: August 3, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Henry Gisser, Helen E. Mertwoy
  • Method for accurately varying the density of a powder or powder charge, and shrink tubes for use therewith
    Patent number: 3968724
    Abstract: Plastic shrink tubes, when filled loosely with explosive powders, and sealed and heated to temperatures of about 300.degree. - 600.degree.F, will shrink and uniformly compress the powders contained therewithin along the length thereof to produce a powder of constant linear density useful in providing constant velocity detonations.
    Type: Grant
    Filed: October 3, 1974
    Date of Patent: July 13, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: James F. Kowalick, George F. Hare, Harry J. Addison, Jr.
  • Isotactic and syndiotactic polyvinyl nitrates and processes for their formation
    Patent number: 3965081
    Abstract: Stereoregular polyvinyl alcohol in acetic anhydride reacts with anhydrous tric acid at -10.degree. to -15.degree.C to form new stereoregular polyvinyl nitrate which is useful as a base for propellant compositions and compares favorably in physical and chemical properties to nitrocellulose.
    Type: Grant
    Filed: January 21, 1974
    Date of Patent: June 22, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Richard A. Strecker, Frank D. Verderame
  • Blue-burning tracer mix
    Patent number: 3951705
    Abstract: A blue-burning pyrotechnic tracer mix which provides a smoke trail even ar the blue flame is no longer visible to thus extend the visible range of the projectile in which the mixture is employed, the pyrotechnic mixture comprising by weight percent: 6-10% potassium perchlorate, 11-18% magnesium, 10-20% cupric chloride anhydrous, 35-45% barium nitrate, 12-18% hexachlorobenzene, 5-10% sulfur.
    Type: Grant
    Filed: May 14, 1975
    Date of Patent: April 20, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Dennis J. Mancinelli, Walter J. Puchalski