Dense fluid spray cleaning method and apparatus

Fluid sprinkling – spraying – and diffusing – With heating or cooling means for the system or system fluid – Heating means

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Details

239289, 239406, 239417, 239429, 239525, B05B 124, B05B 1500, B05B 710, B05B 712

Patent

active

057251541

ABSTRACT:
A spray gun for cleaning using a dense fluid such as CO.sub.2, provides snow pellets of controllable size and kinetic energy, the kinetic energy being at a significantly higher level than has heretofore been attainable. A heated or thermal ionized gas is passed at substantial pressure accelerates the snow particles with an enveloping stream of gas. Charge build-up both within the snow delivery tube and in the substrate region is minimized by the use of a grounding helix in the snow delivery tube, in conjunction with the thermal ionized gas.

REFERENCES:
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patent: 3131868 (1964-05-01), Coleman
patent: 3199600 (1965-08-01), Jacobs
patent: 3201048 (1965-08-01), Gibbs
patent: 3398609 (1968-08-01), Schott
patent: 4862837 (1989-09-01), Holmes
patent: 5344493 (1994-09-01), Jackson
patent: 5368171 (1994-11-01), Jackson

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