Apparatus for processing printed circuit board substrates

Details Apparatus for processing printed circuit board substrates Apparatus for processing printed circuit board substrates

1994-02-22

1996-03-26

Lacey, David L.

Coating apparatus

Projection or spray type

118 64, 118314, 118506, 118733, 494841, 403338, 134114, 34209, 34242, B05B 700, B05C 1500, B05C 1100

Patent

active

055017355

ABSTRACT:
Apparatus for contacting a circuit board substrate with etching fluid or some other chemical includes a conveyor system comprised of upper and lower rotating disks for receiving and transporting the circuit board substrate while the substrate is contacted with fluid. The apparatus includes a labyrinth seal which is used to prevent fluid from escaping from the apparatus. A shunting system permits the type of fluid applied to the substrate to be readily altered. Housing units incorporated in the apparatus are readily secured together with a resilient clamp.

REFERENCES:
patent: 1231069 (1917-06-01), Schaffert
patent: 1750631 (1930-03-01), Eaglesfield
patent: 1811718 (1931-06-01), Hofbauer
patent: 2752215 (1956-06-01), Peiss
patent: 3192893 (1965-07-01), Bauer et al.
patent: 3448720 (1969-06-01), Graham
patent: 4001854 (1977-01-01), Formoy
patent: 4069618 (1978-01-01), Geiss
patent: 4579375 (1986-04-01), Fischer et al.
patent: 4607590 (1986-08-01), Pender
patent: 5232501 (1993-08-01), Pender et al.

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