Vacuum tube filter cover

Details Vacuum tube filter cover Vacuum tube filter cover

1980-09-22

1982-01-19

Spear, Jr., Frank A.

Gas separation

Means within gas stream for conducting concentrate to collector

55274, 55513, 150 52R, 210 94, 210406, 220377, 222464, B01D 4654

Patent

active

043114920

ABSTRACT:
A soft, flexible cover which is adapted to be attached over the open top of a container has a transparent section for viewing the contents of a container with which the cover is used, a filter section for removing entrained matter from air entering the container, and a tubular section for sealable attachment to a suction tube extending therethrough into the container.

REFERENCES:
patent: 1898378 (1933-02-01), McIntyre
patent: 2154772 (1939-04-01), Rathemacher
patent: 2193356 (1940-03-01), Green
patent: 2486320 (1949-10-01), Ost
patent: 2768107 (1956-10-01), Magid
patent: 2821230 (1958-01-01), May
patent: 3116774 (1964-01-01), Callahan
patent: 3122990 (1964-03-01), Fried

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