Coating apparatus – With vacuum or fluid pressure chamber
Patent
1978-10-11
1980-03-04
Louie, Jr., Won H.
Coating apparatus
With vacuum or fluid pressure chamber
134166C, 427243, 427294, 427238, 427350, C23C 1308
Patent
active
041911261
ABSTRACT:
A method for controlling the coating of ceramic monolithic catalyst supports on a production basis to achieve repeatability of coating utilizing a vacuum system to distribute the coating slurry over the interior surfaces of and purge the excess coating slurry from the support at the same time that plugged tubular passageways through the support are unplugged, comprising the steps of applying the coating slurry to the support and subjecting the support to a vacuum to draw the slurry through the passageways and remove plugging and excess slurry to form a coating on the passageway surfaces. Apparatus for practicing the method is adapted to either dipping the support in the slurry or charging the slurry to the support at its upper end as positioned in the apparatus.
REFERENCES:
patent: 2867544 (1959-01-01), Hall
patent: 3873350 (1975-03-01), Dwyer et al.
patent: 3948213 (1976-04-01), Hoyer et al.
patent: 4038939 (1977-08-01), Hoyer et al.
patent: 4039482 (1977-08-01), Hoyer et al.
Leal Richard A.
Reed James R.
Way Terrance
Carter Sidney
General Motors Corporation
Louie, Jr. Won H.
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