Back to results
US 4,444,104 AGranted
Apparatus for applying a foamed treating medium to a substrate
OwnerMathias Mitterinventor
Life of this patent
Estimating the term…
Abstract
An apparatus for applying a treating medium to a screen has a container above the screen and a pipe which discharges foamed treating medium into the container from where an outlet leads to the screen. A foam generator supplies the foam and the pressure at which the foam enters the container can be regulated.
Claims11
Apparatus for applying a foamed treating medium to a workpiece, comprising a screen arranged to be located above a workpiece;
- first means defining above said screen an enclosed space having a predetermined volume and an opening facing said screen, the opening being closed by the workpiece and screen;
- second means communicating with said space for admitting a foamed treating medium into the same essentially uniformly within said enclosed space;
- and third means for foaming a treating medium and for supplying the foamed treating medium in adjustable quantities of liquid in the foam and volumes of gas in the foam to said second means so as to establish and maintain in said space an essentially constant pressure.
Dependencies are inferred from the claim text.