Pile comprising a plurality of filter paper sheets with recesses

Details Pile comprising a plurality of filter paper sheets with recesses Pile comprising a plurality of filter paper sheets with recesses

1984-12-27

1986-06-17

Caroff, Marc Louis

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

210488, 2104935, 206499, D 7400, B01D 3502

Patent

active

045955026

ABSTRACT:
If a plurality of essentially circular sheets of filter paper are stacked in a pile, the individual sheets have a tendency to stick to each other rendering it difficult to remove the topmost sheet from the pile. To overcome this inconvenience, it is provided that adjacent sheets within the pile have a different contour, e.g. by providing every second sheet with a protruding tongue arranged at the circumferential edge thereof. All the intermediate sheets either do not have such tongue or are provided with a recess arranged anywhere along their circumferential edge.

REFERENCES:
patent: 979381 (1910-12-01), Conery, Jr.
patent: 1356662 (1920-10-01), Sherman
patent: 1745929 (1930-02-01), Grimmeisen
patent: 2324440 (1943-07-01), Tormohlen
patent: 3363406 (1968-01-01), Miller
patent: 4220541 (1980-09-01), Chang
patent: 4362623 (1982-12-01), Holopainen

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