Coating apparatus – Projection or spray type – With projector heating – cleaning or conditioning
Patent
1990-04-30
1991-11-19
Fisher, Richard V.
Coating apparatus
Projection or spray type
With projector heating, cleaning or conditioning
118323, 239114, 239210, B05B 1502
Patent
active
050656929
ABSTRACT:
An apparatus (10) for spraying a liquid, such as a low-solids flux, onto a substrate (12), during its transit along a first path (15), comprises a spray gun (38) directed at the substrate. The gun (38) is carried by a carriage (34) reciprocated by a traversing mechanism (42,44,46) which reciprocates the gun back and forth along a second path (30) generally perpendicular to the first path (15). The spray gun (38) is reciprocated such that its spray pattern during each pass slightly overlaps the pattern made during the previous pass, thereby achieving substantially uniform liquid coating on the substrate. Each time the gun (38) reaches an end of its travel, its tip (39) is advantageously cleaned automatically by a brush (84) wetted by a solvent to avoid tip clogging.
REFERENCES:
patent: 2777419 (1957-01-01), Paasche
patent: 2899929 (1959-08-01), Monroe
patent: 3111715 (1963-11-01), Hofer
patent: 3112723 (1963-12-01), Potocki
patent: 3122117 (1964-02-01), Marzullo et al.
patent: 3769232 (1973-10-01), Houldridge
patent: 4821948 (1989-04-01), Fisher et al.
patent: 4871105 (1989-10-01), Fisher et al.
SEHO Sales Literature (date unknown).
Hollesen David B.
Kaczorek Joseph W.
Treible Edwin S.
AT&T Bell Laboratories
Fisher Richard V.
Friedman Charles
Levy R. B.
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