Electrostatic nozzle apparatus

Details Electrostatic nozzle apparatus Electrostatic nozzle apparatus

2007-01-09

2007-01-09

Tadesse, Yewebdar (Department: 1734)

Coating apparatus

With means to apply electrical and/or radiant energy to work...

Electrostatic and/or electromagnetic attraction or...

C118S313000, C239S696000, C096S053000

Reexamination Certificate

active

10969668

ABSTRACT:
A nozzle spray head is provided for use in a dynamic electrostatic air filter, in which the nozzle spray head assembly exhibits multiple nozzle orifices as outlet ports, which extend from the bottom of the nozzle body such that the distances between the outlet ports and a target member are not constant. The charged multiple outlet ports exhibit a more uniform electric field at their tips, thereby enabling a better and more uniform spray pattern to be emitted by each of the individual outlet ports. In one embodiment, the outlet ports are grouped in concentric circles, in which the innermost circle comprises outlet ports of the greatest lengths, and the outermost circle comprises outlet ports of the smallest lengths.

REFERENCES:
patent: 2525347 (1950-10-01), Gilman
patent: 6471753 (2002-10-01), Ahn et al.
patent: 6656253 (2003-12-01), Willey et al.
patent: 2002/0007869 (2002-01-01), Pui et al.
patent: 2004/0089156 (2004-05-01), Gartstein et al.
patent: 0 404 344 (1990-12-01), None
patent: 1 253 626 (2002-10-01), None
U.S. Appl. No. 10/969,633, filed Oct. 20, 2004, Willey et al.
International Search Report date Feb. 24, 2006, 5 pages.

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