Apparatus for strengthening porous plates by impregnation

Details Apparatus for strengthening porous plates by impregnation Apparatus for strengthening porous plates by impregnation

1979-03-13

1981-09-01

Smith, Ronald H.

Coating apparatus

With vacuum or fluid pressure chamber

118 501, 118425, 118694, C23C 1308

Patent

active

042865409

ABSTRACT:
Plates made of porous material are strengthened by impregnation with a hardening fluid. The plates are stacked, subjected to vacuum in a chamber and immersed in the treating fluid, and pressure is then exerted on the fluid. The apparatus includes a chamber which contains a body of the fluid and which can be made airtight by applying a cover. The cover carries a support frame which carries a stack of plates, the cover having a hoisting device to lower the frame and stack into the fluid. A vacuum source and pressure source are connected to the container through a control valve.

REFERENCES:
patent: 2372755 (1945-04-01), Abell
patent: 2917195 (1959-12-01), Hanson
patent: 3233579 (1966-02-01), Arvidsson
patent: 3747784 (1973-07-01), Dean
patent: 4129091 (1978-12-01), France et al.
patent: 4144836 (1979-03-01), Bernath

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