Filter mat

Details Filter mat Filter mat

1980-08-28

1982-06-22

Prunner, Kathleen J.

Gas separation

With nonliquid cleaning means for separating media

Solid agent cleaning member movingly contacts apparatus

55DIG34, 55DIG36, 116DIG25, 116DIG41, 126299R, B01D 4610

Patent

active

043360386

ABSTRACT:
A fibrous filter mat of which all or a part of the fibers are coated totally or at least in part with a mixture of at least two dye components which are insoluble in one another, one of said components being fat- and/or oil-soluble and of a color which contrasts with that of the fiber blend and/or of the other component, the other component being fat- and/or oil-insoluble. The mat is especially suited for kitchen exhaust hoods since entrapment of fats and oils causes a color change as the oil-soluble dye dissolves and spreads out.

REFERENCES:
patent: 2249867 (1941-07-01), Snelling
patent: 3171726 (1965-03-01), Roney et al.
patent: 3505783 (1970-04-01), Graham
patent: 3527027 (1970-09-01), Knight et al.
patent: 3705480 (1972-12-01), Wireman
patent: 3891417 (1975-06-01), Wade
patent: 4050291 (1977-09-01), Nelson
patent: 4130487 (1978-12-01), Hunter et al.

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