Apparatus for tow opening

Textiles: fiber preparation – Working – Fluid or special treatment

Reexamination Certificate

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Reexamination Certificate

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10941716

ABSTRACT:
An apparatus for opening a crimped multifilament tow comprising: a source of crimped multifilament tow; at least one pair of opposed gripping rollers comprising a first roller which is a metal roller and a second roller which is a smooth-surfaced roller made of a material selected from the group consisting of: polyurethane or silicone rubber; where the multifilament tow passes between and in contact with both of the rollers and filaments of the tow are separated from one another and opened.

REFERENCES:
patent: 3032829 (1962-05-01), Mahoney et al.
patent: 3156016 (1964-11-01), Dunlap et al.
patent: 3226773 (1966-01-01), Paliyenko
patent: 3714685 (1973-02-01), Yarber
patent: 4179776 (1979-12-01), Wortman
patent: 4464815 (1984-08-01), Canterino et al.
patent: 5201424 (1993-04-01), Hain
patent: 5316798 (1994-05-01), Tittgemeyer
patent: 5356129 (1994-10-01), Godlewski
patent: 6543106 (2003-04-01), Ames et al.
U.S. Appl. No. 09/219,818, filed Dec. 23, 1998, Ames et al.
U.S. Appl. No. 10/672,519, filed Sep. 26, 2003, Ames et al.

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