Fluent material handling – with receiver or receiver coacting mea – Fluent charge impelled or fluid current conveyed into receiver
Patent
1991-02-26
1991-10-01
Hart, Charles
Fluent material handling, with receiver or receiver coacting mea
Fluent charge impelled or fluid current conveyed into receiver
141 97, 141286, 141346, 141372, 55369, 55374, B65B 116
Patent
active
050524518
ABSTRACT:
A dust control apparatus having a cover member lowerable into an opening of a container, the cover member having a radially expandable seal for sealing the opening, the cover member having a passage therethrough adapted to receive a conduit, the cover member being operable in telescoping relation to the conduit and the passage being sufficiently larger than the conduit for the passage of air between the cover member and conduit, the cover member being movable laterally relative to the conduit to enable the cover member to be lowered into a container which is not precisely aligned therewith, a filter sleeve having a lower end attached to the cover member and an upper end attached to the conduit, the filter sleeve being adapted to prevent the escape of dust from the space between the cover member and conduit, the filter sleeve being protected by the conduit from damage caused by materials flowing through the conduit, the apparatus including an optional fume collecting annulus locatable in surrounding relation to the filter sleeve for collecting and exhausting gases and fumes collected thereby, and an optional inlet port for introducing inert gases or pressurized air to the apparatus.
REFERENCES:
patent: 3095018 (1963-06-01), Moreland
patent: 3260285 (1966-07-01), Vogt
patent: 3384134 (1968-05-01), Hillerns
patent: 3428098 (1969-02-01), Slay
patent: 3788368 (1974-01-01), Geng et al.
patent: 4185669 (1980-01-01), Jevakohoff
patent: 4586549 (1986-05-01), White
patent: 4685598 (1977-08-01), Nezwovski
patent: 4727913 (1988-03-01), Bliss
Gentilcore Michael J.
Mock David G.
Hart Charles
Mallinckrodt Specialty Chemicals Company
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