Cleaning and liquid contact with solids – Apparatus – With heating – cooling or heat exchange means
Patent
1994-03-02
1998-07-21
Stinson, Frankie L.
Cleaning and liquid contact with solids
Apparatus
With heating, cooling or heat exchange means
134201, 134 7, B08B 310
Patent
active
057822530
ABSTRACT:
A system is provided for removing material from a structure having at least one layer of the material formed on a substrate. The system includes a radiant energy source, such as a flashlamp, with an actively cooled reflector for irradiating a target area of a structure with radiant energy, preferably sufficiently intense in at least the visible and ultraviolet, to break or weaken chemical bonds in the material, and an abrasive blaster for impinging the material after irradiation with a cool particle stream, preferably including of CO.sub.2 particles, to remove the irradiated material and cool the substrate. The system may also include light sensors used in a feedback loop to control the removal process by varying the speed at which the radiant energy source is moved along the structure, the repetition rate of the source, the intensity of the source, the pulse width of the source and/or the distance between the source and the structure.
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Cates Michael C.
Hamm Richard R.
Hoogerwerl John D.
Lewis Michael W.
Schmitz Wayne N.
Maxwell Laboratories Inc.
McDonnell Douglas Corporation
Stinson Frankie L.
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