Coating apparatus – With vacuum or fluid pressure chamber
Patent
1977-05-03
1979-03-20
Reynolds, Wm. Carter
Coating apparatus
With vacuum or fluid pressure chamber
118 50, 118421, 118504, B05C 320
Patent
active
041448367
ABSTRACT:
The apparatus includes a horizontal receiving substrate having a resilient gasket extending over the top surface in a closed figure and spaced from the edge of the substrate. A movable cover member including an inverted shallow chamber is provided with a matching resilient gasket on the underside. Vacuum means are connected to the cover. Means are provided for moving the transport cover and substrate into opposing positions so that a porous panel is clamped with between the cover and the substrate gaskets to seal off the major surface portions of the top and bottom faces of the panel while leaving a peripheral region, including the edge, exposed. A tank containing a fluid medium is arranged to move up and around the substrate so that the fluid medium in the tank contacts the surface of the peripheral region of the panel to achieve impregnation. A vacuum is drawn on the cover chamber so that the fluid medium is drawn into the peripheral regions of the panel. Also disclosed is an arrangement with a tank surrounding the perimeter of the substrate and having a means for changing the level of fluid medium in the tank. The level can be changed by inserting a displacement member into the fluid medium or by forcing the fluid medium into the tank from a hyperbaric reservoir chamber.
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Georg Fischer AG Brugg
Reynolds Wm. Carter
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