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United States Patent | 3,899,144 |
Werle , et al. | August 12, 1975 |
Light scattering pigment powder particles, surface treated to minimize inparticle cohesive forces, are dispensed from a jet mill deagglomerator as separate single particles to produce a powder contrail having maximum visibility or radiation scattering ability for a given weight material.
Inventors: | Werle; Donald K. (Hillside, IL), Kasparas; Romas (Riverside, IL), Katz; Sidney (Chicago, IL) |
Assignee: |
The United States of America as represented by the Secretary of the Navy
(Washington,
DC)
|
Appl. No.: | 05/490,610 |
Filed: | July 22, 1974 |
Current U.S. Class: | 244/136 ; 116/214; 241/5; 40/213 |
Current International Class: | B64D 1/16 (20060101); B64D 1/00 (20060101); B64D 001/16 () |
Field of Search: | 244/136 40/213 241/5,29 222/3,4 239/171 116/28R,114R,114F,114N,124R,124B,124C |
1619183 | March 1927 | Bradner et al. |
2045865 | June 1936 | Morey |
2591988 | April 1952 | Willcox |
3531310 | September 1970 | Goodspeed et al. |
R15771 | February 1924 | Savage |
1,022,621 | Mar., 1966 | GB | |||