Seal assembly for pressure or vacuum chambers

Details Seal assembly for pressure or vacuum chambers Seal assembly for pressure or vacuum chambers

1976-07-15

1977-11-15

Bashore, S. Leon

Paper making and fiber liberation

Apparatus

Running or indefinite length product forming and/or treating...

162370, D21F 310

Patent

active

040584356

ABSTRACT:
Improvements in seal assembly for use in pressure or vacuum chambers or the like comprising a sealing element which may be selectively placed in sealing condition or retracted to a non-sealing condition, the sealing element having a sealing surface adapted to be urged into contact with a wall member and also a surface including portions against load members which may be loaded to urge the sealing surface into sealing condition or relaxed, and spring unit for continuously urging the sealing element away from sealing condition whereby the sealing element is in fact urged out of sealing condition when the load members are relaxed.

REFERENCES:
patent: 3802961 (1974-04-01), Grass et al.

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