Filter socks

Details Filter socks Filter socks

1988-12-19

1990-09-25

Fisher, Richard V.

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

493308, 493941, 2104972, 210486, 55381, 55DIG5, B01D 2706, B31D 504

Patent

active

049590456

ABSTRACT:
A construction of filter sock which has a panel (1) with two leaves (2,3) of unequal width such that when folded along a foldline (4) the leaves form a double leaf panel with a projecting side (9). The side (9) is folded back along a second fold line (11) over the free side (6) of leaf (2). The sides (6,9) and leaf (2) are secured together by an overlock stitching (13) to form a tube (12). The invention provides a method of making the filter sock.

REFERENCES:
patent: 408858 (1889-08-01), Seymour
patent: 1184485 (1916-05-01), Mummert
patent: 1585246 (1926-05-01), Hay
patent: 1627795 (1927-05-01), Manning
patent: 2832433 (1958-04-01), Brace
patent: 3037634 (1962-06-01), Mills
patent: 3199275 (1965-08-01), Fesco
patent: 3327864 (1967-06-01), Ball et al.
patent: 3444791 (1969-05-01), Honzel
patent: 4015961 (1977-04-01), Howard et al.
patent: 4292180 (1981-09-01), Zylka et al.
patent: 4311477 (1982-01-01), Kitamura et al.
patent: 4545833 (1985-10-01), Tafara

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