Fluid tight cover seal

Details Fluid tight cover seal Fluid tight cover seal

1988-02-26

1989-03-28

Hall, George T.

Receptacles

Closures

Having gasket or packing

B65D 8300

Patent

active

048156302

ABSTRACT:
A cover for a fluid processing chamber is formed of a resilient, heat and chemical resistant laminate of at least three layers. The first layer is a Teflon sheath, the second layer is a blanket heater, and the third layer is a plurality of thin sheets of silicone rubber. The laminate is formed by vacuum formation of the Teflon sheath onto the blanket heater which is supported by the silicone rubber. The opening to the chamber is formed with a rigid lip. The laminate is contained in a stainless steel housing which has an opening therein sized to encompass the perimeter of the chamber lip. Pressure on the cover housing achieves a fluid tight seal with the chamber. No fluid seeps between the cover and the lip even when processing requiring vigorous fluid agitation is carried out in the sealed chamber.

REFERENCES:
patent: 2948959 (1960-08-01), Bowes
patent: 3352447 (1967-11-01), Hahn
patent: 4053085 (1977-10-01), Brown et al.
patent: 4361252 (1982-11-01), Black et al.

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