Fluid sprinkling – spraying – and diffusing – Electrostatic type – Pressurized spray material
Patent
1994-07-14
1996-04-02
Weldon, Kevin P.
Fluid sprinkling, spraying, and diffusing
Electrostatic type
Pressurized spray material
2395905, 239597, B05B 502
Patent
active
055033369
ABSTRACT:
An electrostatic nozzle assembly for dispensing flowable material to a predetermined target. The nozzle assembly comprises an insulative cap, an insulative base and an electrically chargeable metallic, plate-like shim therebetween. The cap and base of the nozzle assembly have sharp continuous unbroken forward edges, the cap forward edge and the adjacent portion of the base defining a continuous dispensing slot. The nozzle assembly has at least one inlet for flowable material leading to at least one distribution chamber formed in the shim. The at least one distribution chamber comprises a plurality of distribution channels defining discrete pathways having a depth of about one half the thickness of the shim and configured to distribute the flowable material from the inlet to predetermined points along the dispensing nozzle assembly. The spacing between the forward edges of the base and cap and the spacing of the cap forward edge and the forward edge of the shim are critical. The nozzle assembly may be provided with a plurality of interchangeable shims differing in the thickness and the depth of the distribution chamber channels formed therein enabling the nozzle assembly to spray fluid material over a wide range of flow rates.
REFERENCES:
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patent: 2706964 (1955-04-01), Ransburg et al.
patent: 3508711 (1970-04-01), Switall
patent: 4749125 (1988-06-01), Escallon et al.
patent: 4788016 (1988-11-01), Colclough et al.
patent: 4814788 (1989-03-01), Davies
patent: 4830872 (1989-05-01), Grenfell
patent: 5209410 (1993-05-01), Wichmann et al.
United Air Specialists
Weldon Kevin P.
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