Expansible duct seal construction for batch mixers and the like

Details Expansible duct seal construction for batch mixers and the like Expansible duct seal construction for batch mixers and the like

1986-03-17

1987-11-03

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 3, 277 12, 366347, F16J 1302, F16J 1546

Patent

active

047039353

ABSTRACT:
An expansible duct seal construction for a batch mixer vessel with a cover clamped to the open end of the vessel wherein a flexible duct perimetrally surrounds the cover and the end portion of the vessel adjacent the cover, the duct being secured to the sides of the vessel and including an expansion fold around its perimeter secured to the cover in a manner to prevent the escape of vaporous material. A gas under pressure is provided in the duct to balance the pressure in the duct with the gaseous pressure in the vessel and inhibit the migration of material from the vessel in the preferred form of the invention.

REFERENCES:
patent: 3302608 (1967-02-01), Coons et al.
patent: 3324628 (1967-06-01), Natelson
patent: 3328039 (1967-06-01), McKeough

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