Coating processes – Plant member or animal specimen coating
Patent
1976-03-05
1979-09-18
Pianalto, Bernard D.
Coating processes
Plant member or animal specimen coating
427 10, 427 27, A01G 506, A01N 100, A01N 300
Patent
active
041683277
ABSTRACT:
Disclosed is a low volume, space-charge controlled electrostatic spraying which is particularly suitable for use in agriculture but is applicable to industrial and other settings as well. A substance is sprayed through a relatively low voltage nozzle producing finely divided, electrostatically charged particles of the substance. The charged particles are liquid droplets or dust particles, and are about 50 microns or less in size. The space-charge density of the charged particles is monitored, and the deposition of particles on a calibration target is measured at different space-charge densities to establish an optimal space-charge density corresponding to optimum (e.g., maximum or most uniform) deposition. As the charged particles are subsequently directed to target objects, such as plants, the space-charge density is monitored and the spraying and/or charging systems are controlled to maintain the established optimal level which corresponds to optimal deposition.
REFERENCES:
patent: 3094049 (1963-06-01), Snelling
patent: 3801349 (1974-04-01), Wilson et al.
patent: 3872824 (1975-03-01), Erny et al.
patent: 3920436 (1975-11-01), Janssen
patent: 3954719 (1976-05-01), Pirck et al.
Smith, p. 2689, IBM Tech Dis. Bull., vol. 17, No. 9, Feb. 1975.
Pianalto Bernard D.
Research Corporation
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