Coating apparatus – Projection or spray type – Moving projector
Patent
1994-02-01
1995-09-12
Alvo, Steve
Coating apparatus
Projection or spray type
Moving projector
118407, 118410, 222386, 4253761, B05B 1500, B05B 9047, B67D 540
Patent
active
054494079
ABSTRACT:
Extrusion apparatus and method includes a chamber of alterable volume having an outlet and a vent in a movable wall of the chamber to facilitate sealing the chamber upon application of force to the movable wall to displace viscous, fluid composition from within the chamber through the outlet and along a desired path. After displacement of a volume of the composition from the chamber, the vent is relieved to promote expansion of the composition within the chamber through the vent rather than through the outlet. The composition may be cured to substantially non-fluid condition along the desired path in response to applied thermal and/or ultraviolet radiant energy to provide traces of selected electrical properties on a work surface. The composition may be formulated, mixed and loaded into the chamber without compressible gas-filled pockets or voids in the volume of such composition that is confined within the chamber, thereby preserving direct correlation between the volume of the composition displaced from the chamber and the uniform width and thickness of an extruded trace.
REFERENCES:
patent: 2619116 (1952-11-01), Ralston
patent: 3547148 (1970-12-01), Drori
patent: 4516702 (1985-05-01), Schmidt
patent: 4622239 (1986-11-01), Schoenthaler et al.
patent: 4635827 (1987-01-01), Roedig
patent: 4951848 (1990-08-01), Keller
patent: 4999136 (1991-03-01), Su et al.
patent: 5056687 (1991-10-01), Claassen
Bell Adam J.
Breeden Philip J.
Diamant Joram
Lewandowski Edmund S.
Alvo Steve
Griffin Steven P.
Smith Albert C.
Sophia Systems Co., Ltd.
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