Patents by Inventor Asa E. Roane

Asa E. Roane 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).

  • TNT State sensor
    Patent number: 4329131
    Abstract: Light emitting diodes (LED) are used in conjunction with phototransistors determine the liquid-solid state of a 0.030-0.040 inch film of trinitrotoluene (TNT). Liquid TNT is collected on the surface of a rotating drum, and is subsequently cooled to a solid film and removed by a "flaking" knife. The emitted beam from the LED is absorbed when the TNT is in the solid state and transmitted to and reflected from the drum surface when the TNT is in the liquid state. The relative intensity of the reflected beam is a measure of the state of the TNT.
    Type: Grant
    Filed: April 28, 1980
    Date of Patent: May 11, 1982
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Asa E. Roane
  • Length sensing single strand shuttle cutter apparatus for cutting propellant grain
    Patent number: 3969054
    Abstract: A length sensing photocell has its output connected to the input of a Scht trigger control circuit which alternately actuates solenoid pneumatic valves which in turn cause a cylinder operated single strand shuttle cutter to repetitively cut extruded lengths of grain propellants to a substantially uniform length independent of their rate of extrusion.
    Type: Grant
    Filed: July 11, 1975
    Date of Patent: July 13, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Asa E. Roane