Spray apparatus utilizing porous sheet

Details Spray apparatus utilizing porous sheet Spray apparatus utilizing porous sheet

1993-01-28

1995-02-14

Jones, W. Gary

Coating apparatus

Projection or spray type

118 63, 118323, 118301, 118317, 118100, 101119, 239 97, 239DIG23, 68205R, 427348, 427421, B05C 500, B05C 1100, B05B 300

Patent

active

053891481

ABSTRACT:
A spray method and apparatus for uniformly coating a surface with a high degree of efficiency includes filling the pores of a porous sheet with a liquid and then directing compressed fluid from a nozzle into the sheet from one side to spray the liquid onto a surface spaced from an opposite side. Because the total volume of the pores is known, the volume of the sprayed liquid is also known. Moving the nozzle relative to the sheet and the substrate enables the entire surface to be uniformly coated. The size and distribution of the pores on the sheet define the distribution of the liquid sprayed onto the substrate. The coating may be a thick or a thin film of uniform thickness, or may even comprise a recognizable pattern.

REFERENCES:
patent: 3158503 (1964-11-01), Young
patent: 3384931 (1968-05-01), Cochran et al.
patent: 4671205 (1987-06-01), Billeter
patent: 4854230 (1989-08-01), Niki et al.
patent: 5197384 (1993-03-01), Yawata et al.

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