Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1981-06-24
1983-02-01
Nozick, Bernard
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427345, 219121PL, 55 90, 55 95, 55248, 55257QV, 261119R, 55446, B05D 108
Patent
active
043715630
ABSTRACT:
An overspray filter collector unit for a plasma spray system filters fine, relatively small particulate from the overspray upstream of the vacuum pumps. The filter collector unit includes a hollow tank having a pool of oil at the bottom thereof having a top surface onto which the overspray is directed from an inlet conduit. Some of the particulate matter is deposited in the oil and at the same time oil droplets and vapor are entrained in the overspray as it deflects from the oil surface into a tortuous path defined by a plurality of baffles within the tank. The baffle surfaces are wetted by the oil vapor and droplets, and the resulting oil coating entraps the remaining particulate in the overspray before the overspray exits via an outlet conduit to the vacuum pumps. The oil on the surfaces of the baffles with the entrapped particulate therein continuously drains via gravity to the pool of oil at the bottom of the tank and is replaced by oil at the surface of the pool entrained into the continuous flow of overspray. When the accumulation of particulate in the oil is such that the oil rises to a predetermined level, the oil is drained and replaced with fresh oil.
REFERENCES:
patent: 164652 (1875-06-01), Mason
patent: 520675 (1894-05-01), Gindele
patent: 1903731 (1933-04-01), Gaston
patent: 2379795 (1945-07-01), Fenn
patent: 2625383 (1953-01-01), Baird
patent: 3048039 (1962-08-01), Hackler
patent: 3350322 (1967-10-01), Waterhouse
patent: 3527026 (1970-09-01), Miura
patent: 3668825 (1972-06-01), McIlvaine
patent: 3764272 (1973-10-01), Sterling
patent: 3932151 (1976-01-01), Lau
Electro-Plasma, Inc.
Nozick Bernard
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